check engine light MERCEDES-BENZ CLA 2016 Owners Manual

ATA (Anti-Theft Alarm system)
Activating/deactivating .................. .7 3
Function ........................................... 73
Switching off the alarm .................... 73
ATTENTION ASSIST
Activating/deactivating ................ .2 20
Display message ............................ 246
Function/notes ............................ .2 03
Audio menu (on-board computer) .... 217
Audio system
see separate operating instructions
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 242
see Lights
Automatic car wash (care) .............. .3 02
Automatic engine start (ECO start/
stop function) ................................... .1 52
Automatic engine switch-off (ECO
start/stop function) .......................... 152
Automatic headlamp mode .............. 114
Automatic transmission
Accelerator pedal position ............. 161
Changing gear ............................... 161
DIRECT SELECT lever ..................... 157
Drive program ................................ 162
Drive program display .................... 157
Driving tips .................................... 161
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehi-
cles) ............................................... 155
DYNAMIC SELECT controller
(Mercedes-AMG vehicles) .............. 156
Emergency running mode .............. 167
Engaging drive position .................. 159
Engaging neutral ............................ 158
Engaging park position
(Mercedes-AMG vehicles) .............. 160
Engaging park position automati-
cally ............................................... 158
Engaging reverse gear ................... 158
Engaging the park position ............ 157
Holding the vehicle stationary on
uphill gradients .............................. 161 Kickdown ....................................... 161
Manual shifting .............................. 164
Oil temperature (on-board com-
puter, Mercedes-AMG vehicl es) ..... 223
Overvi e
w ........................................ 157
Problem (malfunction) ................... 167
Pulling away ................................... 150
Selector lever ................................ 159
Starting the engine ........................ 149
Steering wheel paddle shifters ...... 164
Transmission position display ........ 159
Transmission position display
(DIRECT SELECT lever) ................... 157
Transmission positions .................. 160
Automatic transmission emer-
gency mode ....................................... 167
B Backup lamp
Display message ............................ 241
BAS (Brake Assist System) ................. 66
Battery (SmartKey)
Checking .......................................... 79
Important safety notes .................... 79
Replacing ......................................... 80
Battery (vehicle)
Charging ........................................ 317
Display message ............................ 244
Important safety notes .................. 315
Jump starting ................................. 319
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 220
Display message ............................ 247
Notes/function .............................. 205
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 234
Notes ............................................. 369
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Changing bulbs .............................. 123 Index 5

Automatic climate control (dual-
zone) .............................................. 133
Controlling automatically ............... 137
Cooling with air dehumidification .. 136
Defrosting the windows ................. 140
Defrosting the windshield .............. 139
General notes ................................ 130
Indicator lamp ................................ 137
Information about using auto-
matic climate control ..................... 134
Maximum cooling .......................... 139
Notes on using the air-condition-
ing system ..................................... 132
Overview of systems ...................... 130
Problem with the rear window
defroster ........................................ 141
Problems with cooling with air
dehumidification ............................ 137
Refrigerant ..................................... 371
Refrigerant filling capacity ............. 371
Setting the air distribution ............. 138
Setting the air vents ...................... 142
Setting the airflow ......................... 138
Setting the temperature ................ 137
Switching air-recirculation mode
on/off ............................................ 141
Switching on/off ........................... 135
Switching residual heat on/off ...... 141
Switching the rear window
defroster on/off ............................ 140
Switching the ZONE function on/
off .................................................. 138
Cockpit
Overview .......................................... 30
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 220
Display message ............................ 234
Operation/notes .............................. 66
COMAND display
Cleaning ......................................... 306
Combination switch .......................... 116
Compass
Calibrating ..................................... 293
Calling up ....................................... 293
Magnetic field zone maps .............. 294
Setting ........................................... 293 Consumption statistics (on-board
computer) .......................................... 214
Convenience closing feature .............. 90
Convenience opening feature ............ 89
Coolant (engine)
Checking the level ......................... 299
Displ ay message ............................ 243
Fi
lling capacity ............................... 370
Important safety notes .................. 369
Temperature (on-board computer,
Mercedes-AMG vehicles) ............... 223
Temperature gauge ........................ 211
Warning lamp ................................. 267
Cooling
see Climate control
Copyright ............................................. 28
Cornering light function
Changing bulbs .............................. 123
Display message ............................ 240
Function/notes ............................. 117
Crash-responsive emergency light-
ing ....................................................... 120
Cruise control
Activation conditions ..................... 179
Cruise control lever ....................... 179
Deactivating ................................... 180
Display message ............................ 249
Driving system ............................... 178
Function/notes ............................. 178
Important safety notes .................. 178
Setting a speed .............................. 179
Storing and maintaining current
speed ............................................. 179
Cup holder
Center console .............................. 278
Important safety notes .................. 278
Rear compartment ......................... 279
Customer Assistance Center
(CAC) ..................................................... 26
Customer Relations Department ....... 26
D
Dashboard
see Instrument cluster
Data
see Technical data Index 7

ESP ®
(Electronic Stability Pro-
gram)
AMG menu (on-board computer) .. .2 24
Characteristics ................................. 69
Deactivating/activating (button
in Mercedes-AMG vehicles) ............. 70
Deactivating/activating (except
Mercedes ‑ AMG vehicles) ................. 70
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) .............. .2 19
Display message ............................ 228
Function/notes ................................ 69
General notes .................................. 69
Important safety information ........... 69
Trailer stabilization ........................... 72
Warning lamp ................................. 263
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 69
Exhaust
see Exhaust pipe
Exhaust check ................................... 173
Exhaust pipe
Cleaning ......................................... 306
Exterior lighting
Cleaning ......................................... 305
see Lights
Exterior mirrors
Adjusting ....................................... 107
Dipping (automatic) ....................... 108
Folding in when locking (on-board
computer) ...................................... 223
Folding in/out (automatically) ....... 108
Folding in/out (electrically) ........... 107
Out of position (troubleshooting) ... 108
Setting ........................................... 108
Storing settings (memory func-
tion) ............................................... 110
Storing the parking position .......... 109
Eyeglasses compartment ................. 273
F
Filler cap
see Refueling
Flat tire
MOExtended tires .......................... 311
Preparing the vehicle ..................... 310 TIREFIT kit ...................................... 312
Floormats ........................................... 294
Fog lamps
Switching on/off ........................... 115
Frequencies
Mobile phone ................................. 362
Two-way radio ................................ 362
Front fog lamps
Display message ............................ 241
Switching on/off ........................... 115
Fuel
Additives ........................................ 367
Consumption information .............. 367
Consumption statistics .................. 214
Displaying the current consump-
tion ................................................ 214
Displaying the range ...................... 214
Driving tips .................................... 173
E10 ................................................ 366
Flexible fuel vehicles ...................... 367
Fuel gauge ....................................... 31
Grade (gasoline) ............................ 366
Important safety notes .................. 365
Problem (malfunction) ................... 169
Refueling ........................................ 167
Tank content/reserve fuel ............. 366
Fuel filler flap
Opening ......................................... 168
Fuel level
Calling up the range (on-board
computer) ...................................... 214
Fuel tank
Capacity ........................................ 366
Problem (malfunction) ................... 169
Fuses
Allocation chart ............................. 326
Before changing ............................. 325
Fuse box in the engine compart-
ment .............................................. 325
Fuse box in the front-passenger
footwell .......................................... 326
Important safety notes .................. 325
G
Garage door opener
Clearing the memory ..................... 292
General notes ................................ 28910
Index

Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (manually) ..................... .1 06
Button overview ............................... 33
Buttons (on-board computer) ......... 211
Cleaning ......................................... 307
Important safety notes .................. 106
Paddle shifters ............................... 164
Steering wheel paddle shifters ....... .1 64
Stopwatch (RACETIMER) ................... 224
Stowage compartments
Armrest (front) ............................... 274
Armrest (under) ............................ .2 74
Center console .............................. 273
Center console (rear) ..................... 274
Cup holders ................................... 278
Eyeglasses compartment .............. .2 73
Glove box ....................................... 273
Important safety information ......... 273
Map pockets .................................. 275
Stowage net ................................... 275
Under driver's seat/front-
passenger seat .............................. 274
Stowage net ....................................... 275
Stowage well beneath the trunk
floor .................................................... 277
Summer tires ..................................... 330
Sun visor ............................................ 279
Suspension
Adaptive Damping System ............. 191
Suspension setting
AMG adaptive sport suspension
system ........................................... 190
Switching air-recirculation mode
on/off ................................................. 141
T
Tachometer ........................................ 211
Tail lamps
Display message ............................ 241
see Lights
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 31 Technical data
Capacities ...................................... 365
Information .................................... 362
Tires/wheels ................................. 355
Vehicle data ................................... 371
Telephone
Accepting a call (multifunction
steering wheel) .............................. 218
Display message ............................ 256
Introduction ................................... 218
Menu (on-board computer) ............ 218
Number from the phone book ........ 218
Redialing ........................................ 219
Rejecting/ending a call ................. 218
Temperature
Coolant .......................................... 211
Coolant (on-board computer,
Mercedes-AMG vehicles) ............... 223
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 223
Outside temperature ...................... 211
Setting (climate control) ................ 137
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 223
Through-loading feature ................... 275
Timing (RACETIMER) ......................... 224
Tire pressure
Calling up (on-board computer) ..... 336
Checking manually ........................ 335
Display message ............................ 250
Maximum ....................................... 334
Not reached (TIREFIT) .................... 314
Notes ............................................. 333
Reached (TIREFIT) .......................... 314
Recommended ............................... 332
Tire pressure loss warning system
General notes ................................ 335
Important safety notes .................. 335
Restarting ...................................... 336
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 338
Function/notes ............................. 336
General notes ................................ 336
Important safety notes .................. 336
Radio type approval for the tire
pressure monitor ........................... 339
Restarting ...................................... 338 Index 17

See "Children in the vehicle" for information
on infants and children traveling with you in
the vehicle restraint systems for infants and
children ( Y
page 58).
Important safety notes
G WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even
fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify an air bag system to
accommodate a person with disabilities, con-
tact an authorized Mercedes-Benz Center for
details. USA only: for further information con-
tact our Customer Assistance Center at
1-800-FOR-MERCedes (1 ‑ 800 ‑ 367 ‑ 6372).
Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and
at regular intervals while the engine is run-
ning. Therefore, malfunctions can be detec-
ted in good time.
The u restraint system warning lamp in
the instrument cluster lights up when the igni-
tion is switched on. It goes out no later than a
few seconds after the vehicle is started. The
components of the restraint system are in
operational readiness.
A malfunction has occurred if the u
restraint system warning lamp: R
does not light up after the ignition is
switched on R
does not go out after a few seconds with
the engine running R
lights up again while the engine is running G WARNING
If restraint system is malfunctioning, restraint
system components may be triggered unin-
tentionally or might not be triggered at all in
the event of an accident with a high rate of
vehicle deceleration. This can affect the Emer-
gency Tensioning Device or air bag, for exam-
ple. This poses an increased risk of injury or
even fatal injury.
Have the restraint system checked and
repaired in a qualified specialist workshop as
soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp C
and PASSENGER AIR BAG OFF indicator
lamp D are part of the Occupant Classifica-
tion System (OCS).
The indicator lamps display the status of the
front-passenger front air bag. R
PASSENGER AIR BAG ON lights up: the
front-passenger front air bag is enabled. If,
in the event of an accident, all deployment
criteria are met, the front-passenger front
air bag is deployed. R
PASSENGER AIR BAG OFF lights up: the
front-passenger front air bag is deactiva-
ted. It will then not be deployed in the event
of an accident.Occupant safety 43
Safety Z

The SmartKey centrally locks/unlocks: R
the doors R
the trunk lid R
the fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
When the locator lighting is activated in Audio
20/COMAND, it lights up when it is dark after
the vehicle is unlocked with the remote con-
trol (see separate operating instructions).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer ( Y
page 222).X
To open the trunk lid automatically:
press and hold the T button until the
trunk lid opens ( Y
page 86).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a
SmartKey in the vehicle.
Locking and unlocking
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry
the SmartKey with you. You can combine the
functions of KEYLESS-GO with those of a con-
ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the 7 button on the SmartKey.
The driver's door and the door at which the
handle is used, must both be closed. The
SmartKey must be outside the vehicle. When
locking or unlocking with KEYLESS-GO, the
distance between the SmartKey and the cor-
responding door handle must not be greater
than 3 ft (1 m). A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart-
Key is in the vehicle. This occurs, for example: R
when starting the engine R
whilst driving R
when the external door handles are
touched R
during convenience closing
X
To unlock the vehicle: touch the inner
surface of the door handle. X
To lock the vehicle: touch sensor sur-
face C or D .
Make sure that you do not touch the inner
surface of the door handle. X
Convenience closing feature: touch
recessed sensor surface D for an exten-
ded period.
Further information on the convenience
closing feature ( Y
page 90).
X
To unlock the trunk lid: pull trunk lid han-
dle C . SmartKey 77
Opening and closing Z

Problem
Possible causes/consequences and P Solutions
KEYLESS-GO is malfunctioning. X
Lock/unlock the vehicle using the remote control function of
the SmartKey. X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function: X
Unlock ( Y
page 85) or lock ( Y
page 85) the vehicle using the
mechanical key. X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the
SmartKey. the on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary
( Y
page 317).
or X
Jump-start the vehicle ( Y
page 319).
or X
Consult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The
SmartKey is in the vehi-
cle. The vehicle is locked. X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 79) and replace it if nec-
essary ( Y
page 80).
If this does not work: X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves. X
Start your vehicle with the SmartKey in the ignition lock.82
SmartKey
Opening and closing

Problem
Possible causes/consequences and P Solutions
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system. X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. X
Have the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †). The coolant
warning lamp may also
be on and a warning
tone may sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 299). Observe the warning
notes as you do so and add coolant if necessary.
DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change
the drive program. Depending on the drive
program selected the following vehicle char-
acteristics will change: R
the drive (engine and transmission man-
agement) R
the suspension (vehicles with damping sys-
tem or AMG adaptive sport suspension sys-
tem) R
the steering R
the availability of the ECO start/stop func-
tion R
the climate control:
Each time you start the engine with the
SmartKey or the Start/Stop button, drive pro-
gram C is activated. For further information
about starting the engine, see ( Y
page 149). X
Press DYNAMIC SELECT button C as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds
the display goes out and the status icon of
the selected drive program appears.
In addition, the current drive program set-
tings are displayed briefly in the Audio 20 or
COMAND display.
i In a few countries, the ECO start/stop
function is deactivated at the factory due to
the available fuel grade. In this case, the
ECO start/stop function is not available in
any drive program, regardless of the display
in the Audio 20 or COMAND display.DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles) 155
Driving and parking Z

Servicing the brakes
! The brake fluid level may be too low, if: R
if the red brake warning lamp lights up in
the instrument cluster and R
you hear a warning tone while the engine
is running
Observe additional warning messages in
the multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immedi-
ately. Consult a qualified specialist work-
shop to arrange this.
! A function or performance test should
only be carried out on a 2-axle dynamom-
eter. If you wish to operate the vehicle on
such a dynamometer, please consult a
qualified specialist workshop in advance.
You could otherwise damage the drive train
or the brake system.
! As the ESP ®
system operates automati-
cally, the engine and the ignition must be
switched off (the SmartKey must be in posi-
tion 0 or 1 in the ignition lock) if:R
the electric parking brake is tested on a
brake dynamometer (for a maximum of
ten seconds) R
the vehicle is towed with the front axle
raised.
Braking triggered automatically by ESP ®
may seriously damage the brake system.
All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the function-
ality of your brakes at regular intervals.
You can find a description of Brake Assist
(BAS) on ( Y
page 66).
Mercedes-Benz recommends that you only
have brake pads/linings installed on your vehicle which have been approved for
Mercedes-Benz vehicles or which correspond
to an equivalent quality standard. Brake
pads/linings which have not been approved
for Mercedes-Benz vehicles or which are not
of an equivalent quality could affect your vehi-
cle's operating safety.
Mercedes-Benz recommends that you only
use brake fluid that has been specially
approved for your vehicle by Mercedes-Benz,
or which corresponds to an equivalent quality
standard. Brake fluid which has not been
approved for Mercedes-Benz vehicles or
which is not of an equivalent quality could
affect your vehicle's operating safety.
Checking brake lining thickness You can measure the break pad/lining thick-
ness using a test gage. Color-coding (green or
red) on the test gage allows you to determine
whether the brake pad/lining thickness is still
sufficient. The test gage is in the vehicle docu-
ment wallet in the glove box.
Front wheel176
Driving tips
Driving and parking

Problem
Possible causes/consequences and P Solutions
I (USA only)
$ (Canada only)
The red indicator lamp
for the electric parking
brake flashes or lights
up and/or the yellow
warning lamp for the
electric parking brake
lights up. X
Observe the additional display messages in the multifunction
display.
u
The red restraint sys-
tem warning lamp is lit
while the engine is run-
ning. The restraint system is faulty.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury. X
Observe the additional display messages in the multifunction
display. X
Drive on carefully. X
Contact a qualified specialist workshop and have the restraint
system checked.
For further information about the restraint system, see
( Y
page 42).266
Warning and indicator lamps in the instrument cluster
On-board computer and displays