152Driving and operatingABS starts to regulate brake pressureas soon as a wheel shows a tendency to lock. The vehicle remains
steerable, even during hard braking.
ABS control is made apparent
through a pulse in the brake pedal
and the noise of the regulation
process.
For optimum braking, keep the brake
pedal fully depressed throughout the
braking process, despite the fact that
the pedal is pulsating. Do not reduce
the pressure on the pedal.
After starting off the system performs
a self-test which may be audible.
Control indicator u 3 92.
Adaptive brake light
During full braking, all three brake
lights flash for the duration of ABS
control.
Fault9 Warning
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS are no longer available. During
hard braking, the vehicle can no longer be steered and may
swerve.
Have the cause of the fault remedied
by a workshop.
Parking brake
Manual parking brake9 Warning
Always apply parking brake firmly
without operating the release
button, and apply as firmly as
possible on a downhill or uphill
slope.
To release the parking brake, pull
the lever up slightly, press the
release button and fully lower the
lever.
Driving and operating153To reduce the operating forces ofthe parking brake, depress the
brake pedal at the same time.
Control indicator R 3 91.
Electric parking brake
Applying when vehicle is stationary
9 Warning
Pull switch m for approx.
one second, the electric parking
brake operates automatically with
adequate force. For maximum
force, e.g. parking with trailer or on
inclines, pull switch m twice.
The electric parking brake is
applied when control indicator m
illuminates 3 91.
The electric parking brake can always
be activated, even if the ignition is off.
Do not operate electric parking brake
system too often without engine
running as this will discharge the
vehicle battery.
Before leaving the vehicle, check the electric parking brake status. Control
indicator m 3 91.
Releasing
Switch on ignition. Keep brake pedal
depressed then push switch m.
Drive away function
Vehicles with manual transmission:
Depressing the clutch pedal and then
slightly releasing the clutch pedal and
slightly depressing the accelerator
pedal releases the electric parking
brake automatically. This is not
possible when the switch m is pulled
at the same time.
Vehicles with automatic transmission: Engaging D and then depressing the
accelerator pedal releases the
electric parking brake automatically. This is not possible when the switch
m is pulled at the same time.
Dynamic braking when vehicle is
moving
When the vehicle is moving and the
switch m is kept pulled, the electric
parking brake system will decelerate
the vehicle, but will not apply
statically.
As soon as the switch m is released,
dynamic braking will be stopped.
Fault
Failure mode of electric parking brake
is indicated by control indicator j and
by a vehicle message which is
displayed in the Driver Information
Centre.
Driving and operating183Trailer hitch
General information
Only use towing equipment that has
been approved for your vehicle.
Entrust retrofitting of towing
equipment to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment.
The bulb outage detection function for trailer brake light cannot detect a
partial bulb outage, e.g. in case of 4 x
5 Watt bulbs, the function only detects
lamp outage when only a single
5 Watt lamp remains or none remain.
Fitting of towing equipment could
cover the opening of the towing eye.
If this is the case use the coupling ball bar for towing. Always keep the
coupling ball bar in the vehicle.Driving characteristics and
towing tips
Before attaching a trailer, lubricate the coupling ball. However, do not do
so if a stabiliser, which acts on the coupling ball, is being used to reduce snaking movements.
For trailers with low driving stability
and caravan trailers with a permitted
gross vehicle weight of more than
1200 kg the use of a stabiliser is
strongly recommended when driving
above 80 km/h.
If the trailer starts snaking, drive more slowly, do not attempt to correct the
steering and brake sharply if
necessary.
When driving downhill, drive in the same gear as if driving uphill and
drive at a similar speed.
Adjust tyre pressure to the value
specified for full load 3 247.Trailer towing
Trailer loads The permissible trailer loads are
vehicle and engine-dependent
maximum values which must not be
exceeded. The actual trailer load is
the difference between the actual
gross weight of the trailer and the
actual coupling socket load with the
trailer coupled.
The permissible trailer loads are
specified in the vehicle documents. In general, they are valid for gradients
up to max. 12%.
The permitted trailer load applies up to the specified incline and up to an
altitude of 1000 metres above sea
level. Since engine power decreases
as altitude increases due to the air
becoming thinner, therefore reducing
climbing ability, the permissible gross
train weight also decreases by 10%
for every 1000 metres of additional
altitude. The gross train weight does
not have to be reduced when driving
on roads with slight inclines (less than
8%, e.g. motorways).
188Vehicle careVehicle careGeneral Information...................189
Accessories and vehicle modifications .......................... 189
Vehicle storage ........................189
End-of-life vehicle recovery .....190
Vehicle checks ........................... 190
Performing work ......................190
Bonnet ..................................... 190
Engine oil ................................. 191
Engine coolant ......................... 192
Washer fluid ............................ 193
Brakes ..................................... 193
Brake fluid ............................... 194
Vehicle battery ......................... 194
Diesel fuel system bleeding .....195
Wiper blade replacement ........196
Bulb replacement .......................196
Halogen headlights ..................196
Adaptive forward lighting .........198
Fog lights ................................. 199
Front turn signal lights .............200
Tail lights ................................. 201
Side turn signal lights ..............202
Number plate light ...................203Interior lights ............................ 204
Instrument panel illumination ...204
Electrical system ........................204
Fuses ....................................... 204
Engine compartment fuse box . 205
Instrument panel fuse box .......207
Load compartment fuse box ....208
Vehicle tools .............................. 210
Tools ........................................ 210
Wheels and tyres .......................211
Winter tyres ............................. 211
Tyre designations ....................211
Tyre pressure monitoring
system .................................... 211
Tyre pressure .......................... 215
Tread depth ............................. 216
Changing tyre and wheel size . 216
Wheel covers ........................... 217
Tyre chains .............................. 217
Tyre repair kit .......................... 217
Wheel changing .......................220
Spare wheel ............................ 223
Jump starting ............................. 226
Towing ....................................... 228
Towing the vehicle ...................228
Towing another vehicle ...........229Appearance care .......................230
Exterior care ............................ 230
Interior care ............................. 232
Vehicle care201Tail lights
1. Open and remove the cover onthe inside of the boot lid by loosen
the screw with a coin.
2. Brake lights, tail lights and fog light are designed as Light
Emitting Diodes (LEDs) and
cannot be changed.
Remove bulb holder by turning
anticlockwise.
Turn signal lights ( 1)
Reversing lights ( 2)
3. Remove and replace bulb
4. Insert bulb holder into tail light
assembly and turn clockwise.
5. Close the cover by inserting thefastener clips first. Lock the cover
by turning the screw clockwise
with a coin.
Additional lights in the boot lid
frame
1. Open the boot lid.
206Vehicle careNo.Circuit1Engine control module2Lambda sensor3Fuel injection, ignition system4Fuel injection, ignition system5–6Mirror heating7Fan control8Lambda sensor, engine cooling9Rear window sensor10Vehicle battery sensor11Trunk release12Adaptive forward lighting, auto‐
matic light control13ABS Valves14–15Engine control module16Starter17Transmission control moduleNo.Circuit18Heated rear window19Front power windows20Rear power windows21Rear electrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS pump31–32Airbag33Adaptive forward lighting, auto‐
matic light control34Exhaust gas recirculationNo.Circuit35Power windows, rain sensor,
exterior mirror36Climate control37–38Vacuum pump39Fuel system control module40Windscreen washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44–45Radiator fan46–47Horn48Radiator fan49Fuel pump50Headlamp levelling, adaptive
forward lighting
208Vehicle careNo.Circuit1Displays2Body control unit, exterior lights3Body control unit, exterior lights4Infotainment system5Infotainment system, instru‐
ment6Power outlet, cigarette lighter7Power outlet8Body control module, left low
beam9Body control module, right low
beam10Body control module, door locks11Interior fan12Driver power seat13Passenger power seat14Diagnostic connector15Airbag16Boot lid relayNo.Circuit17Air conditioning system18Service diagnose19Body control module, brake
lights, tail lights, interior lights20-21Instrument panel22Ignition system23Body control module24Body control module25–26Trunk power outlet accessory
Load compartment fuse box
The fuse box is on the left side of the
load compartment behind a cover.
Remove the cover.
Fuse assignments
Vehicle care213If w flashes for 60-90 seconds then
illuminates continuously, there is a fault in the system. Consult a
workshop.
After inflating, driving may be
required to update the tyre pressure
values in the Driver Information
Centre. During this time w may
illuminate.
If w illuminates at lower temperatures
and extinguishes after driving, this
could be an indicator for approaching
a low tyre pressure condition. Check
tyre pressure.
Vehicle messages 3 102.
If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise the tyre pressure
will not be displayed and w
illuminates continuously.
A spare wheel or temporary spare
wheel is not equipped with pressure
sensors. The tyre pressure
monitoring system is not operational
for these tyres. Control indicator willuminates. For the further three
wheels the system remains
operational.
The use of commercially-available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Operating electronic devices or being close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.
Each time the tyres are replaced, tyre pressure sensors must be
dismounted and serviced. For the
screwed sensor: replace valve core
and sealing ring. For clipped sensor:
replace complete valve stem.
Vehicle loading status Adjust tyre pressure to load condition
according to the tyre information label or tyre pressure chart 3 247, and
select the appropriate setting in the Tyre load menu in the Driver
Information Centre 3 95. This setting
is the reference for the tyre pressure
warnings.The menu Tyre Load only appears if
the vehicle is at a standstill and the
parking brake is applied. On vehicles
with automatic transmission, the
selector lever must be in P.
Select:
● Light for comfort pressure up to
3 people
● Eco for Eco pressure up to
3 people
● Max for full loading