brake sensor MERCEDES-BENZ METRIS 2020 MY20 Operator’s Manual

Function/notes ............................. 155
Attention Assist
see ATTENTION ASSIST
ATTENTION ASSIST
see ATTENTION ASSIST
Authorized workshop
see Qualified specialist workshop
AUTO lamp
Display messages (vehicle with-
out steering wheel buttons) ...........
202
AUTO lights
Display messages (vehicle with
steering wheel buttons) ................. 216
see Lights
Automatic car wash (care) ............... 264
Automatic headlamp mode .............. 100
Automatic locking ............................... 76
Automatic transmission
Accelerator pedal position ............. 134
Changing gear ............................... 132
DIRECT SELECT lever ..................... 131
Display message ............................ 225
Drive program display .................... 132
Driving tips .................................... 134
Emergency running mode .............. 136
Engaging drive position .................. 131
Engaging neutral ............................ 131
Engaging reverse gear ................... 131
Engaging the park position ............ 131
Gearshift recommendation ............ 136
Important safety notes .................. 130
Kickdown ....................................... 135
Manual shifting .............................. 135
Overview ........................................ 130
Problem (malfunction) ................... 136
Program selector button ................ 134
Rocking the vehicle free ................ 135
Shift ranges ................................... 133
Starting the engine ........................ 128
Steering wheel paddle shifters ...... 135
Trailer towing ................................. 135
Transmission oil change ................ 310
Transmission position display
(DIRECT SELECT lever) ................... 132
Transmission positions .................. 132
Automatic transmission emer-
gency mode ....................................... 136 Axle load, permissible (trailer
towing) ...............................................
315 B
Back support see Lumbar support
Backup lamp
Display messages (vehicle with
steering wheel buttons) .................

217
Backup lamps
Display messages (vehicle with-
out steering wheel buttons) ........... 203
Replacing bulbs ............................. 108
BAS (Brake Assist System)
Function/notes ................................ 67
Basic settings
see Settings
Battery (SmartKey)
Checking .......................................... 73
Important safety notes .................... 73
Replacing ......................................... 73
Battery (vehicle)
Care ............................................... 263
Charging ........................................ 262
Connecting and installing .............. 261
Disconnecting and removing ......... 260
Display messages (vehicle with
steering wheel buttons) ................. 219
Display messages (vehicle with-
out steering wheel buttons) ........... 204
Important safety notes .................. 258
Jump starting ................................. 272
Location ......................................... 259
Before driving off
Important safety notes .................. 127
Belt
see Seat belts
Belt warning ......................................... 50
Blind Spot Assist
Activating ....................................... 153
Activating/deactivating (vehicle
with steering wheel buttons) ......... 191
Collision warning ........................... 153
Display message ............................ 223
Important safety notes .................. 152
Monitoring range of the sensors .... 152
Notes/function .............................. 151 Index
5

Trailer towing ................................. 153
Warning display
............................. 153
Blower
see Climate control
Bluetooth ®
Audio ............................... 187
Brake
Display message (vehicle without
steering wheel buttons) ................. 196
Downhill slopes .............................. 142
Heavy and light loads ..................... 142
New brake discs ............................ 143
Wet road surfaces .......................... 142
Brake Assist
see BAS (Brake Assist System)
Brake assistance
see BAS (Brake Assist System)
Brake fluid
Checking the level ......................... 255
Display message (vehicle with
steering wheel buttons) ................. 213
Display message (vehicle without
steering wheel buttons) ................. 199
Notes ............................................. 310
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display messages (vehicle with
steering wheel buttons) ................. 217
Display messages (vehicle with-
out steering wheel buttons) ........... 202
Replacing bulbs ............................. 108
Trailer display messages (vehicle
with steering wheel buttons) ......... 216
Trailer display messages (vehicle
without steering wheel buttons) .... 202
Brake pads/linings
New ............................................... 143
Brakes
ABS .................................................. 67
Adaptive Brake Assist .................... 150
Applying the parking brake ............ 138
BAS .................................................. 67
Brake fluid (notes) ......................... 310
Checking brake fluid level .............. 255
Display message (vehicle with
steering wheel buttons) ................. 210
EBD .................................................. 68 Hill start assist ............................... 129
Important safety notes
.................. 142
New brake pads/linings ................ 143
Parking brake (notes) ..................... 143
Riding tips ...................................... 142
Warning lamp ................................. 229
Breakdown
Mercedes-Benz Service24h ........... 272
Vehicle tool kit ............................... 270
Breakdown assistance
see Towing away
Buttons
On the instrument cluster .............. 176
On the steering wheel .................... 181 C
California Important notice for retail cus-
tomers and lessees ..........................

27
Camera
see Rear view camera
Car wash
see Care
Care
Car wash ........................................ 264
Carpets .......................................... 269
Display ........................................... 268
Exterior lights ................................ 266
Interior ........................................... 268
Notes ............................................. 263
Paint .............................................. 265
Plastic trim .................................... 268
Power washer ................................ 265
Rear view camera .......................... 267
Roof lining ...................................... 269
Seat belt ........................................ 269
Seat cover ..................................... 269
Sensors ......................................... 267
Sliding door ................................... 267
Steering wheel ............................... 269
Trim pieces .................................... 269
Washing by hand ........................... 264
Washing the engine ....................... 265
Wheels ........................................... 266
Windows ........................................ 265
Wiper blades .................................. 266 6
Index

Operating safety and vehicle
approval
Attachments and bodies
.................. 33
Changing the engine power out-
put ................................................... 32
Correct use ...................................... 29
Declaration of conformity ................ 31
Equipment and conversions ............. 33
Important safety notes .................... 30
Information about body/equip-
ment mounting directives ................ 33
Notes on operating the vehicle ........ 30
Qualified specialist workshop .......... 32
Registering your vehicle ................... 33
Operating system
On-board computer (vehicle with
steering wheel buttons) ................. 181
On-board computer (vehicle with-
out steering wheel buttons) ........... 176
Operating unit
Media Interface ................................ 43
Operator's Manual
General notes .................................. 27
Vehicle equipment ........................... 27
Outside temperature display ........... 175
Overhead control panel ...................... 44
Overrevving range ............................. 175
Overrun cutoff ................................... 140P
Paint code number ............................
304
Paintwork (cleaning instructions) ... 265
Parking ............................................... 138 Important safety notes .................. 138
Parking brake ................................ 138
Rear view camera .......................... 163
see Active Parking Assist
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 159
see PARKTRONIC
see Rear view camera
Parking aid
see PARKTRONIC
Parking brake
Display message (vehicle with
steering wheel buttons) ................. 214 Display message (vehicle without
steering wheel buttons) .................

201
Notes/function .............................. 138
Warning lamp ................................. 138
Parking brake
see Parking brake
Parking lamps
Changing bulbs .............................. 107
PARKTRONIC
Deactivating/activating ................. 158
Display messages .......................... 221
Driving system ............................... 156
Function/notes ............................. 156
Important safety notes .................. 157
Problem (malfunction) ................... 159
Range of the sensors ..................... 157
Roll-back warning .......................... 158
Trailer towing ................................. 159
Warning display ............................. 158
Partition
Note ................................................. 34
Transport protection ...................... 244
PASSENGER AIR BAG OFF
Indicator lamp .................................. 47
Passenger bench seat
Seat sliders ...................................... 89
Passenger compartment air-con-
ditioning system
see Climate control
Passenger compartment heating
see Climate control
Pedestrian protection
see Hood
Pets in the vehicle ............................... 66
Plastic trim (cleaning instruc-
tions) .................................................. 268
Power washers .................................. 265
Power windows
see Side windows
Preparing for a journey
Checks in the vehicle ..................... 127
Visual check of the vehicle exte-
rior ................................................. 127
Program selector button .................. 134
Protection of the environment
General notes .................................. 29
Pulling away
Automatic transmission ................. 128 Index
17

Fuel gauge (vehicle without
steering wheel buttons) .................
176
Refueling procedure (fuel) ............. 137
see Fuel
Remote control
see Key
Replacing bulbs
Important safety notes .................. 105
Replacing bulbs
see Replacing bulbs
Reporting safety defects .................... 32
Rescue card ......................................... 35
Reserve (fuel tank) see Fuel
Reserve fuel
Display messages (vehicle with
steering wheel buttons) ................. 221
Display messages (vehicle with-
out steering wheel buttons) ........... 206
Warning lamp ................................. 233
Residual heat (climate control) ........ 123
Restraint system
Display message (vehicle with
steering wheel buttons) ................. 215
Display message (vehicle without
steering wheel buttons) ................. 201
Important safety notes .................... 46
Introduction ..................................... 46
PASSENGER AIR BAG OFF indica-
tor lamp ........................................... 47
Warning lamp ................................. 232
Warning lamp (function) ................... 46
Reverse warning feature .................. 129
Reversing feature
Electric sliding door ......................... 78
Side windows ................................... 84
Roadside Assistance (breakdown) .... 28
Roof carrier
Maximum payload .......................... 314
Notes ............................................. 249
Roof lining and carpets (cleaning
guidelines) ......................................... 269
Roof load (roof carrier) ..................... 314S
Safety Children in the vehicle

..................... 60 Operating safety and registration .... 30
see Occupant safety
Safety system
see Driving safety systems
Seat
Correct driver's seat position ...........

87
Seat belts
Adjusting the height ......................... 50
Cleaning ......................................... 269
Correct usage .................................. 49
Fastening ......................................... 50
Important safety guidelines ............. 48
Introduction ..................................... 47
Releasing ......................................... 50
Warning lamp ................................. 228
Warning lamp (function) ................... 50
Seat sliders
Problems ......................................... 89
Seats
Adjusting (electrically) ..................... 88
Adjusting (manually) ........................ 88
Adjusting lumbar support ................ 89
Adjusting the head restraint ............ 93
Armrest ............................................ 95
Cleaning the cover ......................... 269
Important safety notes .................... 87
Seat heating .................................... 95
Storing settings (memory func-
tion) ................................................. 97
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 269
see Automatic transmission
Sensors (cleaning instructions) ....... 267
Service interval display
Calling up the service due date ...... 258
Hiding service messages ............... 258
Notes ............................................. 257
Service menu (on-board com-
puter) .................................................. 191
Service phone number ...................... 272
Service products
Brake fluid ..................................... 310
Coolant (engine) ............................ 310
Engine oil ....................................... 308
Fuel ................................................ 306
Important safety notes .................. 305 Index
19

vehicle. This also includes labeling and docu-
mentation affected by their modifications.
It is their responsibility to certify that:
R the altered vehicle conforms to all applica-
ble standards and regulations affected by
the vehicle alteration
R the altered vehicle continues to comply with
the motor vehicle safety standards and
emissions regulations
R the changes or installation of accessories do
not impair the safety of the vehicle
We are not responsible for any final certifica-
tion or claims regarding product liability or
warranty claims that arise as a result of such
changes. This applies to:
R components, assemblies or systems which
have been altered
R non-compliance with emissions laws and
regulations or with vehicle safety standards
arising as a result of the alterations
R all consequences resulting form the
changed, less safe or even defective vehicle
We do not assume responsibility as the final
stage manufacturer or the consequential prod-
uct liability.
Notes on the engine radiator Even seemingly small changes to the vehicle,
such as attaching a radiator trim for winter
driving or as protection against insects, are
not permitted. Do not cover the radiator. Do
not use thermal mats, insect protection covers
or anything similar.
Doing so can cause the diagnostics system to
display inaccurate values. Some of these val-
ues are legally required and must always be
correct.
Notes for commercial vehicles without
partitions Vehicles, which are approved as commercial
vehicles (N1), do not comply with the
ISO 27956
standard in the respective current
valid version unless equipped with a partition.
The ISO 27956 Standard details the equip-
ment for correct load securing in delivery vehi-
cles. Retrofitting the partition is strongly rec-
ommended when using the vehicle for the
transport of goods, as correct load securing in
vehicles without the partition is difficult to
achieve. Genuine Mercedes-Benz parts
! Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed in
the following areas of your vehicle:
R doors
R door pillars
R door sills
R seats
R cockpit
R instrument cluster
R center console
Do not install accessories such as audio sys-
tems in these areas. Do not carry out
repairs or welding. You could impair the
operating efficiency of the restraint sys-
tems.
Have aftermarket accessories installed at a
qualified specialist workshop. H
Environmental note
We supply reconditioned assemblies and
parts which are of the same quality as new
parts. The same New Vehicle Limited War-
ranty applies as for new parts.
The operating safety of the vehicle could be
jeopardized if you use parts, tires and wheels
as well as accessories relevant to safety which
have not been approved by Mercedes-Benz.
This could lead to malfunctions in safety-rele-
vant systems, e.g. the brake system. Only use
genuine Mercedes-Benz parts or parts of equal
quality. Only use tires, wheels and accessories
that have been specifically approved for your
vehicle.
Mercedes-Benz tests genuine Mercedes-Benz
parts, conversion parts and accessories that
have been specifically approved for the type of
vehicle for:
R Reliability
R Safety
R Suitability
Despite ongoing market research, Mercedes-
Benz is unable to assess other parts. Even if
an independent or official approval has been
provided in exceptional cases, Mercedes-Benz
accepts no responsibility for the use of such
parts in Mercedes-Benz vehicles. 34
Introduction

In some countries, certain parts are only offi-
cially approved for installation or modification
if they comply with legal requirements. All gen-
uine Mercedes-Benz parts satisfy these
requirements. Make sure that all parts are
suitable for your vehicle.
Always specify the vehicle identification num-
ber (VIN) ( Y page
304) and engine number
when ordering genuine Mercedes-Benz parts
(Y page 305). QR code for rescue card
The QR Code stickers are affixed to the B-pillar
on the driver's and front-passenger side.
In the event of an accident the rescue services
use the QR Code to quickly find the rescue
card for your vehicle. The current rescue card
contains the most important information on
your vehicle, e.g. the electric cable routes, in a
compact form.
Further information can be found at http://
www.mercedes-benz.de/qr-code. Data stored in the vehicle
Electronic control units
Electronic control units are installed in your
vehicle. Some of them are necessary to ensure
that your vehicle functions safely, some are
there to support the driver (driver assistance
systems). In addition to that, your vehicle
offers convenience and entertainment func-
tions which are also made possible by the use
of electronic control units.
Electronic control units contain data memories
which can store technical information on the
vehicle's operating state, component stress,
maintenance requirements as well as technical
events and malfunctions either temporarily or
permanently.
In general, this information documents the sta-
tus of a component, a module, a system or the
surroundings, for example:
R operating states of system components (e.g.
fill levels, battery status, tire pressure)
R status messages concerning the vehicle or
its individual components (e.g. number of
wheel revolutions/speed, deceleration in movement, lateral acceleration, display of
fastened seat belts)
R malfunctions and defects in important sys-
tem components (e.g. lights, brakes)
R information on events damaging the vehicle
R system responses in special driving situa-
tions (e.g. air bag deployment, intervention
of stability control systems)
R ambient conditions (e.g. temperature, rain
sensor)
In addition to the underlying control unit func-
tion, this data can be used for the detection
and the rectification of malfunctions as well as
the optimization of vehicle functions by the
manufacturer. Most of this data is volatile and
is only processed in the vehicle itself. Only a
small proportion of the data is stored in event
or malfunction memories.
When you use services, the technical data
from the vehicle can be read out by service
network employees (e.g. workshops, manufac-
turers) or third parties (e.g. breakdown serv-
ices). Services can include repair services,
maintenance processes, warranty cases and
quality assurance measures. Data is read out
using the legally prescribed diagnostics con-
nection in the vehicle. The respective repre-
sentatives of the service network or third par-
ties collect, process and use the data. It docu-
ments technical states of the vehicle, helps
staff to find malfunctions and improve quality
and, in certain cases, is passed on to the man-
ufacturer. Furthermore, the manufacturer is
subject to product liability provisions. For this
reason, the manufacturer requires technical
data from vehicles.
Malfunction memories in the vehicle can be
reset within the scope of the repair or service
work carried out by a service outlet.
Depending on the equipment selected, you
can add data to the convenience and infotain-
ment functions of the vehicle yourself.
These include:
R multimedia data, such as music, films or
photos for playback in an integrated multi-
media system
R address book data for use in connection
with an integrated hands-free system or an
integrated navigation system
R navigation destinations entered
R data on the utilization of Internet services Introduction
35 Z

ESP
®
is deactivated if the å warning lamp
in the instrument cluster is lit when the engine
is running.
Only use wheels with the recommended tire
sizes. Only then will ESP ®
function properly.
Deactivating or activating ESP ®G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations
described in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
Activate ESP ®
as soon as the situations descri-
bed above no longer apply. Otherwise, ESP ®
assistance for stabilizing the vehicle will
remain significantly reduced, even if the vehi-
cle starts to skid.
If you deactivate ESP ®
:
R the å warning lamp in the instrument
cluster lights up
R the ÷ warning lamp in the instrument
cluster flashes if the wheels are spinning
R ESP ®
assistance for stabilizing the vehicle in
the lower speed range up to approximately
37 mph (60 km/h
) is significantly reduced
R engine torque is no longer limited and the
drive wheels are able to spin. The spinning
of the wheels results in a cutting action for
better traction on loose surfaces
R traction control is still activated
R ESP ®
still provides support when you brake
Depending on the equipment in the vehicle,
you can activate or deactivate ESP ®
when the
engine is running by using the å button or
by using the on-board computer:
R on vehicles without steering wheel buttons
(Y page 179)
R on vehicles with steering wheel buttons
(Y page 190) å button (equipment-dependent)
X To activate/deactivate: when the engine
is running, press the å button.
The å warning lamp in the instrument
cluster lights up when ESP ®
is deactivated.
Trailer stabilization Observe the important safety guidelines for
the driving safety system (
Y page

66). G
WARNING
If road and weather conditions are poor,
trailer stabilization will not be able to pre-
vent the vehicle/trailer combination from
swerving. Trailers with a high center of grav-
ity can tip over before ESP ®
can detect this.
There is a risk of an accident.
Always adapt your driving style to the pre-
vailing road and weather conditions.
ESP ®
trailer stabilization counteracts critical
driving situations in good time and thereby
provides considerable assistance when driving
with a trailer. Trailer stabilization is part of
ESP ®
.
If the sensor system and evaluation logic
detect trailer swinging movements, ESP ®
trailer stabilization firstly brakes individual
vehicle wheels in a targeted manner. It thus
counteracts swinging movements. If the
swinging movements do not stop, the vehicle
is braked until the vehicle/trailer combination
is stabilized. If necessary, the vehicle's engine
output is limited.
If your vehicle with trailer (vehicle/trailer com-
bination) starts to swerve, you will be able to
stabilize the vehicle/trailer combination only
by braking. ESP ®
trailer stabilization helps you Driving safety systems
69
Safety Z

Bulb holder
=
Turn signals/brake lamps/tail lamps/
standing lamps
? Backup lamp
A Rear fog lamp (driver's side only)
X Apply light pressure to the corresponding
bulb, turn it counter-clockwise and remove
it from the bulb holder.
X Press the new bulb into the socket and
screw it in clockwise.
X Insert bulb holder ; into the tail lamp and
tighten all three screws :.
X Install the tail lamp (Y page 108).Windshield wipers
Switching the windshield wiper
on/off
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can
scratch the glass if wiping takes place when
the windshield is dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always use
washer fluid when operating the windshield
wipers.
! If the windshield wipers leave smears on
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Clean the windshield using washer fluid
after washing the vehicle in an automatic
car wash.
! Intermittent wiping with rain sensor: due
to optical influences and the windshield becoming dirty in dry weather conditions,
the windshield wipers may be activated
inadvertently. This could then damage the
windshield wiper blades or scratch the wind-
shield.
For this reason, you should always switch
off the windshield wipers in dry weather. 1
$ Windshield wipers off
2 Ä Intermittent wipe, low (rain sensor
set to low sensitivity)
3 Å Intermittent wipe, high (rain sensor
set to high sensitivity)
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B î 1st pressure point – single wipe; 2nd
pressure point – wipe with washer fluid
X Turn the key to position 1 or 2 in the igni-
tion lock.
X Turn the í wiper switch to the corre-
sponding position.
In the Ä or Å
positions, the appropriate
wiping frequency is set automatically accord-
ing to the intensity of the rain. In the Å
position, the rain sensor is more sensitive to
precipitation than in the Ä position, caus-
ing the windshield wipers to wipe more fre-
quently.
The windshield will no longer be wiped prop-
erly if the wiper blades are worn. This may pre-
vent you from observing the traffic conditions.
Information on replacing the wiper blades can
be found under "Replacing wiper blades"
( Y page 110). Windshield wipers
109
Lights and windshield wipers Z

Useful information
This Operator's Manual describes all models
as well as standard and optional equipment of
your vehicle that were available at the time of
going to print. Country-specific variations are
possible. Note that your vehicle may not be
equipped with all of the described functions.
This also applies to systems and functions rel-
evant to safety.
Read the information on qualified specialist
workshops (Y page
32).Breaking-in notes
Important safety notes
In certain driving and driving safety systems,
the sensors adjust automatically while a cer-
tain distance is being driven after the vehicle
has been delivered or after repairs. Full system
effectiveness is not reached until the end of
this teach-in procedure.
New or replaced brake pads and brake discs
only reach their optimal braking effect after a
few hundred kilometers of driving. Until then,
compensate for this by applying greater force
to the brake pedal. The first 1000 miles (1500 km)
For the service life and economy of your vehi-
cle it is crucial that you break in the engine
with due care.
R Therefore, protect the engine for the first
1000 miles (1500 km

) by driving at varying
vehicle and engine speeds.
R Avoid overstraining the vehicle and high
engine speeds during this period, e.g. driv-
ing at full throttle. Do not exceed Ø of the
permissible maximum speed for each gear.
R Do not change down a gear manually in
order to brake.
R Try to avoid depressing the accelerator
pedal beyond the pressure point (kickdown).
After 1000 miles (1500 km), you can increase
the engine speed gradually and accelerate the
vehicle to full speed.
i You should also observe these notes on
breaking-in if the engine or parts of the drive
train on your vehicle have been replaced. Driving
Important safety notes
G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system
or parts of the engine that heat up. There is
a risk of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could
affect, for example, the power steering and
the brake boosting effect. You will require
considerably more effort to steer and brake.
There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake
can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident.
Release the parking brake fully before driv-
ing off.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only shift the automatic transmission to the
desired drive position when the vehicle is
stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train. 126
Driving
Driving and parking

of the journey. Make sure that you do not
endanger other road users when doing so.
Checking the brake pad thickness In addition to monitoring using the brake pad
wear sensor, regularly monitor and check all of
the brake pads by performing a visual inspec-
tion to look for pad material wear.
If you are unable to check the brake wear on
the inside of the wheels, remove the wheels
with the tools provided.
Make sure that the brake pad material thick-
ness never falls below
0.12 in (3 mm). Have
the brake pads checked and replaced at a
qualified specialist workshop, if necessary.
Do not solely rely on the brake pad wear sen-
sor.
It is strongly recommended that you have the
brake pads checked at a qualified specialist
workshop at every service displayed in the
maintenance interval indicator, prior to long
journeys and whenever the wheels are
removed.
New brake discs and brake pads/
linings New brake pads and brake discs only reach
their optimal braking effect after about
60 miles

(100 kilometers). Until then, compen-
sate for this by applying greater force to the
brake pedal.
For safety reasons, Mercedes-Benz recom-
mends only installing the following brake discs
and brake pads/linings:
R brake discs that have been approved by
Mercedes-Benz
R brake pads/linings that have been approved
by Mercedes-Benz or are of an equivalent
standard of quality
Other brake discs or brake pads/linings can
compromise the safety of your vehicle.
Always replace all brake discs or brake pads/
linings on an axle at the same time and only
have them replaced at a qualified specialist
workshop. When replacing the brake discs,
always have the brake pads/linings replaced
at the same time. Parking brake G
WARNING
If you must brake the vehicle with the park-
ing brake, the braking distance is considera-
bly longer and the wheels could lock. There
is an increased danger of skidding and acci-
dents.
Only use the parking brake to brake the
vehicle when the service brake is faulty. Do
not apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turning again.
When driving on wet roads or dirt-covered sur-
faces, road salt and/or dirt may get into the
parking brake. This causes corrosion and a
reduction of braking force.
In order to prevent this, drive with the parking
brake lightly applied from time to time. When
doing so, drive for a distance of approximately
110 yds (100 m) at a maximum speed of
12 mph (20 km/h

).
The brake lamps are not illuminated when you
brake the vehicle using the parking brake. Driving in wet conditions
Hydroplaning G
WARNING
There is a danger of hydroplaning occurring,
even if you are driving slowly and your tires
have sufficient tread depth, depending on
the depth of water on the road. There is a
risk of an accident.
For this reason, avoid tire ruts and brake
carefully.
Therefore, in heavy rain or other conditions in
which hydroplaning can occur, drive as fol-
lows:
R reduce your speed
R avoid tire ruts
R apply the brakes with care Driving tips
143
Driving and parking Z