Page 135 of 209

Driving and operating133
If the trailer starts snaking, drive moreslowly, 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 3 198.
Trailer towing Trailer loads
The permissible trailer loads are
vehicle-dependent 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 sealevel. Since engine power decreases as altitude increases due to the airbecoming 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).
The permissible gross train weight
must not be exceeded. This weight is
specified on the identification plate
3 179.
Vertical coupling load
The vertical coupling load is the load
exerted by the trailer on the coupling
ball. It can be varied by changing the
weight distribution when loading the
trailer.
The maximum permissible vertical
coupling load is specified on the
towing equipment identification plate
and in the vehicle documents. Always aim for the maximum load, especially
in the case of heavy trailers. The
vertical coupling load should never
fall below 25 kg.In the case of trailer loads of
1200 kg or more, the vertical coupling load should not be less than 50 kg.
Rear axle load When the trailer is coupled and the
towing vehicle fully loaded (including
all occupants), the permissible rear
axle load (see identification plate or
vehicle documents) must not be
exceeded.
Towing equipmentCaution
When operating without a trailer,
remove the coupling ball bar.
Towing equipment audible
warning For vehicles fitted with towing
equipment, when connected to a
trailer the pitch of the audible warning
changes upon operation of the turn
signals.
Page 136 of 209
134Driving and operating
The pitch of the audible warning will
change if a turn signal light on the
trailer or the towing vehicle fails.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced
and the vehicle/trailer combination is
selectively braked until the snaking ceases. While the system is working,keep steering wheel as still as
possible.
Trailer stability assist (TSA) is a
function of the Electronic stability
program (ESP) 3 124.Auxiliary features
Power take-off
To activate, with the vehicle
stationary and the engine idling:
■ Select neutral (MTA = N)
■ Depress the clutch pedal
■ Press switch on the instrument panel
■ Release clutch pedal
The engine idle speed increases to 1,200 rpm.
If the system does not operate, repeat
the procedure or gradually release
the clutch pedal.
To deactivate, depress the clutch
pedal and press switch on the
instrument panel.
Page 150 of 209
148Vehicle care
5. Detach bulb from bulb holder andrenew the bulb.
6. Insert the bulb holder, engaging the two lugs in the reflectorhousing and rotate clockwise to
secure.
7. Reattach wiring connector to bulb.
8. Replace protective cover.
Tail lights
Rear brake, tail, turn signal,
reverse and fog tail lights
1. Remove the upper and lower trim panels from the rear pillar.
2. Unscrew the two nuts from the locating pins on the rear of the
lamp assembly.
3. Withdraw the lamp assembly rearwards from the outer side.
4. Detach wiring connector from lamp assembly.
5. Remove the three screws from the rear of the lamp assembly.
6. Remove bulb holder from the lamp assembly.
Page 151 of 209

Vehicle care149
7. Push bulb into socket slightly,rotate anti-clockwise, remove and
renew bulb.
Turn signal light ( 1)
Tail and brake light ( 2)
Reverse light ( 3)
Rear fog light, may be on one side only ( 4)
8. Replace bulb holder in lamp assembly.
9. Replace the three screws on the rear of the lamp assembly.
10. Reattach wiring connector to lamp
assembly.
11. Replace lamp assembly from the outer side into original position,
ensuring that it is seated correctly.
12. Replace the two nuts onto the locating pins on the rear of the
lamp assembly.
13. Install the upper and lower trim panels to the rear pillar.Side turn signal lights
1. Push the lamp assembly to the right and pull at the left-hand side
of the lamp assembly to release
from the aperture.
2. Detach wiring connector from lamp assembly.
3. Remove bulb holder from lamp assembly by rotating 90° and
renew bulb.
4. Install bulb holder in lamp assembly.
5. Reattach wiring connector.
6. Install lamp assembly into aperture and push to the left to
secure.
Mirror turn signal lights 1. Move the lower mirror assembly from the front to access the screw.
2. Remove the screw using a torx screwdriver.
3. Remove bulb holder from the rear
of the lower mirror assembly.
4. Renew bulb.
5. Replace bulb holder.
6. Replace the screw.
Page 152 of 209
150Vehicle careCentre high-mounted
brake light
1. Remove cover from the inside of the rear door.
2. Unscrew the nut from the locating
pin at the rear of the lamp
assembly.
3. Remove the lamp assembly from the aperture on the outer side.
4. Detach wiring connector from lamp assembly.
5. Remove bulb holder from lamp assembly and renew bulb.
6. Install bulb holder in lamp assembly and reattach wiring
connector to lamp assembly.
7. Replace lamp assembly into aperture, ensuring that it is seated
correctly.
8. Replace the nut onto the locating pin on the rear of the lamp
assembly.
9. Install cover on the inside of the rear door.
Number plate light
1. Unclip lens using a flat blade screwdriver.
2. Remove cover and renew bulb.
3. Reinstall lens.
Page 156 of 209
154Vehicle careInstrument panel fuse box
Located behind the trim panel on the
left-hand side of the instrument panel. Pull upper part of trim panel to
remove.
Do not store any objects behind this
panel.
Some circuits may be protected by
several fuses.
SymbolCircuitZInfotainment system, seat
heating, vehicle display
screen, audio connections,
alarm?Power outletÌCigarette lightereInstrument panelUCentral lockingOTurn signals, rear fog lights,
body control moduleDIAGDiagnostic connectoruABS, Electronic stability
programdInterior lights, brake lightsZBody control moduleSTOPBrake lightIBody control module, power windows, air conditioningmLeft heated rear windowSymbolCircuitnRight heated rear windowRWindscreen washerMElectronic immobiliserUHeated seatsFBLCornering lightlHands-free connection&TachographPTOPower take-offjHornÍPreheating, diesel fuel filterxClimate control fanADPAdditional adaptations,Power windows, body
control module
Page 172 of 209

170Vehicle care
engine mounting bolt. Connect asfar away from the discharged
vehicle battery as possible,
however at least 60 cm.
Route the leads so that they cannot
catch on rotating parts in the engine
compartment.
To start the engine: 1. Start the engine of the vehicle providing the jump start.
2. After 5 minutes, start the other engine. Start attempts should be
made for no longer than
15 seconds at an interval of
1 minute.
3. Allow both engines to idle for approx. 3 minutes with the leads
connected.
4. Switch on electrical consumers (e.g. headlights, heated rear
window) of the vehicle receiving
the jump start.
5. Reverse above sequence exactly when removing leads.Towing
Towing the vehicle The towing eye is stowed with the
vehicle tools 3 155.
Disengage the cover using a suitable
tool and remove.
Screw the towing eye clockwise into
the front towing point and tighten fully using the wheel wrench.
Attach a tow rope - or better still a tow
rod - to the towing eye, never to the
bumper or front suspension units.
Caution
Do not tow the vehicle from the
rear. The front towing eye must
only be used for towing and not
recovering a vehicle.
Switch on ignition to release steering
wheel lock and to permit operation of
brake lights, horn and windscreen
wipers.
Switch off the air suspension system
3 114.
Transmission in neutral.
If neutral cannot be selected on
vehicles with MTA transmission, the vehicle must only be towed with the
drive wheels raised off the ground.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can
damage the vehicle.
When the engine is not running,
considerably more force is needed to
brake and steer.
Page 204 of 209

202IndexAAccessories and vehicle modifications .......................... 135
Adaptive forward lighting .....91, 147
Adjustable air vents ...................106
Airbag and belt tensioners ...........79
Airbag deactivation ................51, 79
Airbag label................................... 46 Airbag system .............................. 46
Air conditioning regular operation ................................ 107
Air conditioning system ................ 97
Air intake .................................... 107
Air suspension ........................... 114
Air vents...................................... 106
Antifreeze ................................... 138
Antilock brake system ................ 121
Antilock brake system (ABS) .......81
Anti-theft alarm system ................27
Anti-theft locking system .............. 27
Appearance care ........................171
Armrest ........................................ 41
Ashtrays ....................................... 73 Automatic light control .................89
Automatic locking ........................23
Auxiliary heater ........................... 102B
Battery, jump starting.................. 168
Belts.............................................. 44 Bonnet ....................................... 137
Brake assist ............................... 122
Brake fluid .......................... 141, 176
Brake pad wear ............................ 81
Brakes ............................... 121, 141
Brake system ............................... 80
Breakdown.................................. 170
Bulb replacement ....................... 144
C
Capacities .................................. 197
Cargo management system ........64
Car Pass ...................................... 18
Catalytic converter .....................116
Central locking system ................19
Centre high-mounted brake light 150
Changing tyre and wheel size ...160
Charging system .......................... 80
Child locks ................................... 23
Child restraint installation locations ................................... 54
Child restraints.............................. 52
Child restraint systems ................52
Cigarette lighter ........................... 73
Cleaning the vehicle ...................171
Climate control ............................. 14