ECU MERCEDES-BENZ C CLASS 2016 Owners Manual

Battery (SmartKey)
Checking .......................................... 84
Important safety notes .................... 84
Replacing ......................................... 84
Battery (vehicle)
Charging ........................................ 350
Display message ............................ 269
Important safety notes .................. 347
Jump starting ................................. 352
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 248
Display message ............................ 276
Notes/function .............................. 216
see Active Blind Spot Assist
Bluetooth ®
Connecting another mobile
phone ............................................ 306
Searching for a mobile phone ........ 306
see also Digital Operator's Man-
ual .................................................. 298
Telephony ...................................... 305
Box (trunk) ......................................... 314
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 261
Notes ............................................. 392
Brake force distribution
see EBD (electronic brake force
distribution)
Brake pedal
Pedal resistance/pedal travel .......... 45
Brakes
ABS .................................................. 68
Adaptive Brake Assist ...................... 72
BAS .................................................. 68
BAS PLUS with Cross-Traffic
Assist ............................................... 69
Brake fluid (notes) ......................... 392
Display message ............................ 256
EBD .................................................. 76
High-performance brake system .... 183
Hill start assist ............................... 150
HOLD function ............................... 194
Important safety notes .................. 182 Maintenance .................................. 183
Parking brake ................................ 178
RBS warning lamp .......................... 288
Recuperative Brake System ............. 45
Riding tips ...................................... 182
Warning lamp ................................. 288
Breakdown
Where will I find...? ........................ 342
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 35
Buttons on the steering wheel ......... 236
C California
Important notice for retail cus-
tomers and lessees .......................... 28
Calling up a malfunction
see Display messages
Calling up the climate control bar
Multimedia system ........................ 302
Calling up the climate control
menu
Multimedia system ........................ 302
Car
see Vehicle
Care
360° camera ................................. 339
AIRPANEL ...................................... 339
Car wash ........................................ 335
Carpets .......................................... 341
Display ........................................... 340
Exhaust pipe .................................. 340
Exterior lights ................................ 338
Gear or selector lever .................... 340
General notes ................................ 335
Interior ........................................... 340
Matte finish ................................... 337
Paint .............................................. 337
Plastic trim .................................... 340
Power washer ................................ 336
Rear view camera .......................... 339
Roof lining ...................................... 341
Seat belt ........................................ 341
Seat cover ..................................... 341
Sensors ......................................... 339 Index 5

Switching on/off (on-board com-
puter) ............................................. 250
Declarations of conformity ................. 31
Diagnostics connection ...................... 31
Digital Operator's Manual
Help ................................................. 25
Introduction ..................................... 25
Digital speedometer ......................... 241
DIRECT SELECT lever
Automatic transmission ................. 156
Display
see Display messages
see Warning and indicator lamps
Display message
Hybrid drive system ....................... 272
Display messages
ASSYST PLUS ................................ 333
Calling up (on-board computer) ..... 255
Driving systems ............................. 274
Engine ............................................ 268
General notes ................................ 255
Hiding (on-board computer) ........... 255
Introduction ................................... 255
Lights ............................................. 267
Safety systems .............................. 256
SmartKey ....................................... 285
Tires ............................................... 280
Vehicle ........................................... 282
Distance recorder ............................. 239
Distance warning (warning lamp) .... 295
Distance warning function
Function/notes ................................ 71
DISTRONIC PLUS
Activating ....................................... 188
Activation conditions ..................... 188
Cruise control lever ....................... 188
Deactivating ................................... 191
Display message ............................ 277
Displays in the instrument cluster .. 191
Driving tips .................................... 192
Driving with DISTRONIC PLUS ....... 189
Function/notes ............................. 186
Important safety notes .................. 187
Setting a speed .............................. 190
Setting the specified minimum
distance ......................................... 190
Stopping ........................................ 189 with Steering Assist and Stop&Go
Pilot ............................................... 192
Doors
Automatic locking (switch) ............... 89
Central locking/unlocking
(SmartKey) ....................................... 81
Control panel ................................... 43
Display message ............................ 284
Emergency locking ........................... 89
Emergency unlocking ....................... 89
Important safety notes .................... 87
Opening (from inside) ...................... 88
Drinki ng an d driving ......................... 180
Drive program
Automatic transmission ................. 159
SETUP (on-board computer) .......... 253
Drive programs
Display (DIRECT SELECT lever) ...... 157
Driver's door
see Doors
Driving abroad
Mercedes-Benz Service ................. 335
Driving Assistance PLUS package ... 219
Driving on flooded roads .................. 184
Driving safety systems
ABS (Anti-lock Braking System) ....... 68
ADAPTIVE BRAKE ............................. 76
Adaptive Brake Assist ...................... 72
BAS (Brake Assist System) .............. 68
BAS PLUS with Cross-Traffic
Assist ............................................... 69
COLLISION PREVENTION ASSIST
PLUS ................................................ 70
Distance warning function ............... 71
EBD (electronic brake force distri-
bution) ............................................. 76
ESP ®
(Electronic Stability Pro-
gram) ............................................... 73
Important safety information ........... 68
Overview .......................................... 67
PRE-SAFE ®
Brake ............................. 77
Recuperative Brake System ............. 45
STEER CONTROL ............................. 78
Driving system
RACE START (Mercedes-AMG
vehicles) ........................................ 1958
Index

DISTRONIC PLUS ........................... 186
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot ............... 192
General notes ................................ 185
Lane Keeping Assist ...................... 218
PARKTRONIC ................................. 199
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 60
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS) .............. 61
Rear view camera .......................... 206
Traffic Sign Assist .......................... 215
Message memory (on-board com-
puter) .................................................. 255
Messages
see Display messages
see Warning and indicator lamps
Mirror turn signal
Cleaning ......................................... 339
Mirrors
see Exterior mirrors
see Rear-view mirror
see Vanity mirror (in the sun visor)
Mobile phone
Connecting (Bluetooth ®
inter-
face) .............................................. 305
Connecting another mobile
phone ............................................ 306
Frequencies ................................... 386
Installation .................................... .3 86
Menu (on-board computer) ............ 245
Transmission output (maximum) .... 386
Modifying the programming
(SmartKey) .......................................... .8 3
MOExtended tires .............................. 343
Mounting wheels
Lowering the vehicle ...................... 384
Mounting a new wheel ................... 383
Preparing the vehicle .................... .3 80
Raising the vehicle ......................... 381
Removing a wheel .......................... 383
Securing the vehicle against roll-
ing away ........................................ 380
MP3
Operation ....................................... 244
see also Digital Operator's Man-
ual ................................................. .2 98 Multifunc ti on display
Function/notes ............................ .2 37
Permanent display ......................... 251
Multifunction steering wheel
Operating the on-board computer .. 236
Overview .......................................... 38
Multimedia system
Switching on and off ..................... .2 99
Music files
see also Digital Operator's Man-
ual ................................................. .2 98
N Navigation
Menu (on-board computer) ............ 241
see also Digital Operator's Man-
ual ................................................. .2 98
Notes on breaking-in a new vehi-
cle ....................................................... 145
O Occupant Classification System
(OCS)
Conditions ....................................... 54
Faults ............................................... 58
Operation ......................................... 54
System self-test ............................... 56
Occupant safety
Air bags .......................................... .5 1
Automatic measures after an acci-
dent ................................................. 61
Children in the vehicle ..................... 62
Important safety notes .................... 46
Introduction to the restraint sys-
tem .................................................. 46
Occupant Classification System
(OCS) ............................................... 54
PASSENGER AIR BAG indicator
lamps ............................................... 47
Pets in the vehicle ........................... 67
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 60
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS) .............. 61
Restraint system warning lamp ........ 46
Seat belt .......................................... 4814
Index

Parking lamps
Switching on/off ........................... 119
PARKTRONIC
Deactivating/activating ................. 201
Driving system .............................. .1 99
Function/notes ............................ .1 99
Important safety notes .................. 199
Problem (malfunction) ................... 202
Range of the sensors ..................... 199
Warning display ............................. 200
PASSENGER AIR BAG
Display message ............................ 265
Indicator lamps ................................ 47
Problems (malfunction) .................. 265
Perfume atomizer
Operating ....................................... 138
Problem (malfunction) ................... 140
Setting the perfume intensity
(multimedia system) ...................... 303
Vial ................................................ 138
Pets in the vehicle ............................... 67
Phone book
see also Digital Operator's Man-
ual .................................................. 298
Plastic trim (cleaning instruc-
tions) .................................................. 340
PLUG-IN HYBRID operating
Electrical energy generated ........... 228
PLUG-IN HYBRID operation
Automatic engine start (ECO
start/stop function) ....................... 232
Automatic engine switch-off (ECO
start/stop function) ....................... 231
Charge level of the high-voltage
battery ........................................... 227
Displaying the total range and
electric range ................................. 228
Driving tips .................................... 230
DYNAMIC SELECT switch .............. 229
ECO start/stop function ................ 231
Electric motor (power display) ....... 225
Electrical energy generated
(Audio 20) ...................................... 228
Electrical energy generated
(COMAND) ..................................... 228
Energy flow display ........................ 227
Fuel consumption .......................... 228
Fuel consumption (Audio 20) ......... 228 Fuel consumption (COMAND) ........ 228
General notes ................................ 224
Haptic accelerator pedal ................ 230
High-voltage battery (condition of
cha rge) .......................................... 227
HY BR
ID menu ................................ 248
Important safety notes .................. 225
Instrument cluster (power dis-
play) ............................................... 225
Noiseless start ............................... 228
Operating (on-board computer) ..... 227
Operating mode ............................. 226
Overrun mode ................................ 232
Parking .......................................... 232
Power display (electric motor) ....... 225
Problems with SRS (supplemental
restraint system) ............................ 234
Problems with the combustion
engine ............................................ 233
Problems with the hybrid drive
system ........................................... 234
Problems with the Recuperative
Brake System ................................ 233
Pulling away ................................... 228
READY display ............................... 228
Recuperative Brake System ........... 225
Resetting the values (Audio 20) ..... 228
Resetting the values (COMAND) .... 228
Route-based operating strategy ..... 232
Shifting manually ........................... 229
Starting .......................................... 228
When the vehicle is stationary ....... 230
Power washers .................................. 336
Power windows
see Side windows
Pre-entry climate control (via
SmartKey)
Problems (malfunctions) ................ 142
Pre-entry climate control at depar-
ture time
General notes ................................ 142
Pre-entry climate control at time of
departure
Setting departure time ................... 143
Pre-entry climate control via key
General notes ................................ 14116
Index

Pre-entry climate control via
SmartKey
Activating/deactivating ................. 141
PRE-SAFE ®
(anticipatory occupant
protection)
Display message ........................... .2 62
Operation ......................................... 60
PRE-SAFE ®
Brake
Activating/deactivating ................. 247
Display message ............................ 262
Function/notes ................................ 77
Important safety notes .................... 77
Warning lamp ................................. 295
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS)
Operation ......................................... 61
Protection against theft
ATA (Anti-Theft Alarm system) ......... 79
Immobilizer ...................................... 79
Protection of the environment
General notes .................................. 27
Pulling away
Automatic transmission ................. 149
General notes ................................ 149
Hill start assist ............................... 150
Q
QR code
Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 32
Qualified specialist workshop ........... 31
Quick access for audio and tele-
phone
Changing the station/music
track .............................................. 301
R
RACE START (Mercedes-AMG vehi-
cles) .................................................... 195
RACETIMER (on-board computer) .... 253
Radiator cover ................................... 331
Radio
Selecting a station ......................... 243
Radio mode
see also Digital Operator's Man-
ual ................................................. .2 98 Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 31
Rain closing feature (panorama
roof with power tilt/sliding panel) .. 101
RBS (Recuperative Brake System)
Warning lamp ................................. 288
Reading lamp ..................................... 121
Rear compartment
Setting the air vents ..................... .1 44
Setting the airflow ......................... 135
Setting the temperature ................ 134
Rear fog lamp
Display message ............................ 267
Switching on/off ........................... 119
Rear lamps
see Lights
Rear seat (folding the backrest for-
wards/back) ...................................... 311
Rear seats
Display message ............................ 284
Folding the backrest forwards/
back ............................................... 311
Rear view camera
Cleaning instructions ..................... 339
Display in the multimedia system .. 207
Function/notes ............................ .2 06
Switching on/off ........................... 207
Rear window blind ............................ 318
Rear window defroster
Problem (malfunction) ................... 137
Switching on/off ........................... 136
Rear-view mirror
Anti-glare (manual) ........................ 113
Dipping (automatic) ....................... 114
Recuperative Brake System
Driving safety systems ..................... 45
Important safety notes .................... 45
Reflective safety jacket .................... 342
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 393
Refueling
Fuel gauge ....................................... 36
Important safety notes ....... ........... 164
R ef
ueling process .......................... 165 Index 17

Storing settings (memory func-
tion) ............................................... 116
Switching seat heating on/off ....... 108
Switching seat ventilation on/
off .................................................. 109
Securing a load
see Securing cargo
Securing cargo .................................. 313
Selector lever
Cleaning ......................................... 340
see Automatic transmission
Sensors (cleaning instructions) ....... 339
Service menu (on-board com-
puter) .................................................. 246
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 392
Coolant (engine) ............................ 392
Engine oil ....................................... 391
Fuel ................................................ 388
Important safety notes .................. 388
Refrigerant (air-conditioning sys-
tem) ............................................... 393
Washer fluid ................................... 393
Setting the charge current (on-
board computer) ............................... 248
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 298
Setting the departure time (on-
board computer) ............................... 249
Setting the language
see also Digital Operator's Man-
ual .................................................. 298
Setting the time
see also Digital Operator's Man-
ual .................................................. 298
Settings
Factory (on-board computer) ......... 252
On-board computer ....................... 247
SETUP (on-board computer) ............. 253
Side impact air bag ............................. 53
Side marker lamp (display mes-
sage) ................................................... 267
Side windows
Cleaning ......................................... 338 Convenience closing feature ............ 96
Convenience opening feature .......... 96
Important safety information ........... 94
Opening/closing .............................. 95
Problem (malfunction) ..................... 98
Resetting ......................................... 97
Reversing feature ............................. 95
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 298
Ski and snowboard bag .................... 310
Sliding sunroof
Opening/ closi ng .............................. 99
R
esetting ....................................... 100
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 84
Changing the programming ............. 83
Checking the battery ....................... 84
Convenience closing feature ............ 96
Convenience opening feature .......... 96
Display message ............................ 285
Door central locking/unlocking ....... 81
Important safety notes .................... 81
KEYLESS-GO start function .............. 83
Loss ................................................. 86
Mechanical key ................................ 83
Overview .......................................... 81
Positions (ignition lock) ................. 146
Problem (malfunction) ..................... 86
Starting the engine ........................ 148
Smartphone
Starting the engine ........................ 149
SMS
see also Digital Operator's Man-
ual .................................................. 298
Snow chains ...................................... 363
Socket (12 V)
Center console .............................. 319
General notes ................................ 319
Rear compartment ......................... 319
Sound
Switching on/off ........................... 299
Special seat belt retractor .................. 62
Specialist workshop ............................ 31
Speed, controlling
see Cruise control Index 19

Obstacle recognition ........................ 90
Opening dimensions ..................... .3 94
Opening/closing .............................. 89
Trunk load (maximum) ..................... .3 94
Turn signals
Changing bulbs (front) ................... 124
Changing bulbs (rear) .................... 124
Display message ............................ 267
Switching on/off ........................... 119
Two-way radio
Frequencies ................................... 386
Installation ..................................... 386
Transmission output (maximum) .... 386
Type identification plate
see Vehicle identification plate
U Unlocking
Emergency unlocking ....................... 89
From inside the vehicle (central
unlocking button) ............................ .8 8
USB devices
Connecting to the Media Inter-
face .............................................. .3 07
V
Vanity mirror (in the sun visor) ....... .3 17
Vehicle
Correct use ...................................... 32
Data acquisition ............................... 32
Display message ............................ 282
Equipment ....................................... 28
Individual settings .......................... 247
Limited Warranty ............................ .3 2
Loading .......................................... 370
Locking (in an emergency) ............... 89
Locking (SmartKey) .......................... 81
Lowering ........................................ 384
Maintenance .................................... 29
Operating safety .............................. 30
Parking .......................................... 177
Parking for a long period ................ 179
Pulling away ................................... 149
Raising ........................................... 381
Reporting problems ......................... 32
Securing from rolling away ............ 380
Towing away .................................. 354 Transporting .................................. 356
Unlocking (in an emergency) ........... 89
Unlocking (SmartKey) ...................... 81
Vehicle data ................................... 394
Vehicle data
Roof load (maximum) ..................... 394
Trunk load (maximum) ................... 394
Vehicle dimensions ........................... 394
Vehicle emergency locking ................ 89
Vehicle identification number
see VIN
Vehicle identification plate .............. 387
Vehicle level
AIRMATIC ...................................... 197
Display message ............................ 275
Vehicle tool kit .................................. 343
Video
Operating the DVD ......................... 244
see also Digital Operator's Man-
ual .................................................. 298
VIN
Seat ............................................... 388
Type plate ...................................... 387
Voice Control System
see Separate operating instructions
W
Warning
Stickers ........................................... 44
Warning and indicator lamps
ABS ................................................ 289
Brakes ........................................... 288
Check Engine ................................. 293
Coolant .......................................... 293
Distance warning ........................... 295
ESP ®
.............................................. 290
ESP ®
OFF ....................................... 291
Fuel tank ........................................ 293
General notes ................................ 286
Hybrid drive system ....................... 288
Overview .......................................... 36
Parking brake ................................ 292
PASSENGER AIR BAG ...................... 47
RBS (Recuperative Brake Sys-
tem) ............................................... 288
Reserve fuel ................................... 293
Restraint system ............................ 292 Index 23

the vehicle's high-voltage electrical system
checked by a qualified specialist workshop.
The components of the vehicle's high-voltage
electrical system are marked with yellow warn-
ing stickers. The cables of the vehicle's high-
voltage electrical system are orange in color.
Vehicles with an electric motor generate much
less driving noise than vehicles with internal
combustion engines. As a result, your vehicle
may not be heard by other road users in certain
situations. This can happen, for example, when
you are parking and your vehicle is not seen by
other road users. This requires you to adopt a
particularly anticipatory driving style, as it is
necessary to allow for the possibility that other
road users may behave erratically.
Declarations of conformity
Vehicle components which receive
and/or transmit radio waves USA: "The wireless devices of this vehicle com-
ply with Part 15 of the FCC Rules. Operation is
subject to the two following two conditions: 1)
These devices may not cause harmful interfer-
ence, and 2) These devices must accept any
interference received, including interference
that may cause undesired operation. Changes
or modifications not expressly approved by the
party responsible for compliance could void the
user’s authority to operate the equipment."
Canada: "The wireless devices of this vehicle
comply with Industry Canada license-exempt
RSS standard(s). Operation is subject to the fol-
lowing two conditions: (1) These devices may
not cause interference, and (2) These devices
must accept any interference, including inter-
ference that may cause undesired operation of
the device."
Diagnostics connection
The diagnostics connection is only intended for
the connection of diagnostic equipment at a
qualified specialist workshop.
G WARNING
If you connect equipment to the diagnostics
connection in the vehicle, it may affect the operation of the vehicle systems. As a result,
the operating safety of the vehicle could be
affected. There is a risk of an accident.
Do not connect any equipment to a diagnos-
tics connection in the vehicle.
G WARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use
loose floormats and do not place floormats on
top of one another.
! If the engine is switched off and equipment
on the diagnostics connection is used, the
starter battery may discharge.
Connecting equipment to the diagnostics con-
nection can lead to emissions monitoring infor-
mation being reset, for example. This may lead
to the vehicle failing to meet the requirements of
the next emissions test during the main inspec-
tion.
Qualified specialist workshop An authorized Mercedes-Benz Center is a quali-
fied specialist workshop. It has the necessary
specialist knowledge, tools and qualifications to
correctly carry out the work required on your
vehicle. This is especially the case for work rel-
evant to safety.
Observe the notes in the Maintenance Booklet.
Always have the following work carried out at an
authorized Mercedes-Benz Center: R
work relevant to safety R
service and maintenance work R
repair work R
alterations, installation work and modifica-
tions R
work on electronic components R
work on the hybrid drive systemOperating safety 31
Introduction Z

Correct use If you remove any warning stickers, you or oth-
ers could fail to recognize certain dangers.
Leave warning stickers in position.
Observe the following information when driving
your vehicle: R
the safety notes in this manual R
the vehicle technical data R
traffic rules and regulations R
laws and safety standards pertaining to motor
vehicles
Problems with your vehicle If you should experience a problem with your
vehicle, particularly one that you believe may
affect its safe operation, we urge you to contact
an authorized Mercedes-Benz Center immedi-
ately to have the problem diagnosed and recti-
fied. If the problem is not resolved to your sat-
isfaction, please discuss the problem again with
a Mercedes-Benz Center or contact us at one of
the following addresses.
In the USA
Customer Assistance Center
Mercedes-Benz USA, LLC
One Mercedes Drive
Montvale, NJ 07645-0350
In Canada
Customer Relations Department
Mercedes-Benz Canada, Inc.
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9
Reporting safety defects USA only:
The following text is published as required of
manufacturers under Title 49, Code of U.S. Fed-
eral Regulations, Part 575 pursuant to the
"National Traffic and Motor Vehicle Safety Act of
1966".
If you believe that your vehicle has a defect
which could cause a crash or could cause injury
or death, you should immediately inform the
National Highway Traffic Safety Administration
(NHTSA) in addition to notifying Mercedes-Benz
USA, LLC. If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order
a recall and remedy campaign. However, NHTSA
cannot become involved in individual problems
between you, your dealer, or Mercedes-Benz
USA, LLC.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at
1-888-327-4236(TTY: 1-800-424-9153 ); go to
http://www.safercar.gov ; or write to: Admin-
istrator, NHTSA, 400 Seventh Street, SW.,
Washington, DC 20590.
You can also obtain other information about
motor vehicle safety from
http://www.safercar.gov
Limited Warranty
! Follow the instructions in this manual about
the proper operation of your vehicle as well as
about possible vehicle damage. Damage to
your vehicle that arises from culpable contra-
ventions against these instructions is not cov-
ered either by the Mercedes-Benz Limited
Warranty or by the New or Used-Vehicle War-
ranty.
QR codes for the rescue card The QR codes are secured in the fuel filler flap
and on the opposite side on the B-pillar. In the
event of an accident, rescue services can use
the QR code to quickly find the appropriate res-
cue card for your vehicle. The current rescue
card contains the most important information
about your vehicle in a compact form, e.g. the
routing of the electric cables.
You can find more information under http://
portal.aftersales.i.daimler.com/public/
content/asportal/en/communication/
informationen_fuer/QRCode.html.
Data stored in the vehicle
Data storage
A wide range of electronic components in your
vehicle contain data memories.32
Data stored in the vehicle
Introduction

X
If possible, move the vehicle out of the
danger zone: shift the transmission into posi-
tion N .X
Release the electric parking brake. X
Roll the vehicle to a safe place and park it
safely.
Get assistance from others if necessary.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing. There is therefore a risk of being locked out
if the vehicle is being pushed or tested on a
dynamometer. X
Switch the ignition off. X
Shift the transmission to position P .
Depress the electric parking brake
( Y
page 178).
Secure the vehicle against rolling away
( Y
page 380). X
To use the high-voltage switch-off device:
open the hood.
X
Press release clip C in the direction of the
arrow and pull it out. X
Pull the high voltage switch-off device D
apart until it engages in the stop position.
If the hybrid drive system has been deactivated
due to reasons mentioned above, have it
checked at a qualified specialist workshop
before reactivation.
High-voltage battery
G WARNING
In the event of a vehicle fire, the internal pres-
sure of the high-voltage battery can exceed a
critical value. In this case flammable gas
escapes through a ventilation valve on the underbody. The gas can ignite. There is a risk
of injury.
Leave the danger zone immediately. Secure
the danger area at a suitable distance, whilst
observing legal requirements.
G WARNING
If the housing of the high-voltage battery has
been damaged, electrolyte and gases may
leak out. These are poisonous and caustic.
There is a risk of injury.
Avoid contact with skin, eyes or clothing.
Immediately rinse electrolyte splashes off
with water and seek medical attention
straight away.
PLUG-IN HYBRID vehicles: charging the high-
voltage battery ( Y
page 168).
Engine compartment Before opening the hood: X
Apply the electric parking brake. X
Shift the transmission to position P .X
Switch the ignition off. X
Remove the SmartKey from the ignition lock.
or, in vehicles with KEYLESS-GO start-function
or KEYLESS ‑ GO X
Remove the Start/Stop button from the igni-
tion lock. X
Observe the warning notes on the risk of elec-
tric shock ( Y
page 44). X
Observe the warning notices about the hood
( Y
page 330).
RBS driving safety system (Recupera-
tive Brake System) The Recuperative Brake System supports you
when braking with an electronically-controlled
brake boost mode and enables the recovery of
kinetic energy (recuperation).
Further information about the Recuperative
Brake System ( Y
page 225).Hybrid vehicles 45
Safety Z