Page 208 of 287

206Driving and operatingFor trailers with low driving stability
and caravan trailers, the use of an
oscillation damper is strongly
recommended.
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.
If the outside temperature exceeds
37 °C, reduce the load on the trailer
to protect the engine of the vehicle.
At high outside temperatures it is
recommended to leave the engine
running for one or two minutes after
having stopped the vehicle in order to
faciliate cooling.
Adjust tyre pressure to the value
specified for full load 3 271.
Towing a trailer increases the braking
distance of the vehicle. To limit the
heating of the brakes, it is
recommended to use the braking
effect of the engine.By driving uphill, the temperature of
the coolant is increased. To reduce
heating, drive at a reduced speed and
pay attention to the coolant
temperature. If the control indicator
2 of the engine coolant temperature
gauge illuminates, stop the vehicle
and switch off engine as soon as
possible.
Trailer towing Trailer loadsThe 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 12%.
The permissible trailer load applies
up to the specified incline and at sea
level. 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 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
3 264.
When distributing the loads in the trailer, heavy objects should be
placed as close as possible to the
axle.
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.
Page 209 of 287
Driving and operating207Always aim for the maximum vertical
coupling load, especially in the case
of heavy trailers. The vertical coupling
load should never fall below 25 kg.
Rear axle load
When the trailer is coupled and the
towing vehicle fully loaded, the
permissible rear axle load (see
identification plate or vehicle
documents) may be exceeded by
60 kg , the gross vehicle weight rating
must not be exceeded. If the
permissible rear axle load is
exceeded, a maximum speed of
100 km/h applies.
Towing equipment Depending on version the vehicle canbe fitted with a detachable or a fixed
coupling ball bar.
Type ACaution
When operating without a trailer,
remove the coupling ball bar.
Fitting the coupling ball bar
1. Swivel the connecting socket downwards. Take off the cap.
2.Insert the coupling ball bar into the
opening and push firmly up to the stop.
3. Insert the plug lock in the opening
and lock it with the
corressponding key.
4. Put on the cap.
5. Attach the trailer.
Page 210 of 287
208Driving and operating
6. Connect the trailer plug to thesocket.
7. Attach the breakaway stoppingcable to the eye on the carrier.
9 Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted correctly. If the coupling ball bardoes not engage correctly, seekthe assistance of a workshop.
Dismounting coupling ball bar
1. Disconnect the trailer plug.
2. Unfasten the breakaway stopping
cable.
3. Remove the trailer.
4. Take off the cap.
5. Insert the key in the plug lock, unlock it and remove it from the
opening.
Page 211 of 287
Driving and operating2096.Move 1 to left and hold it pressed,
push 2 to the back and remove the
coupling ball.
7. Swivel the connecting socket upwards. Put on the cap.
Type B 1. Swivel the connecting socket downwards.
2. Attach the trailer.
3. Connect the trailer plug to the socket and fasten the breakaway
stopping cable to the eye on the
carrier.
Type C
1. Remove the safety splint.
2. Pull the lever and open the towing
ring.
3. Swivel the connecting socket downwards.
4. Attach the trailer, close the towing
ring and fix the splint.
5. Connect the trailer plug to the socket and attach the breakaway
stopping cable to the eye on the
carrier.
Type D 1. Swivel the connecting socket downwards.
2. Attach the trailer.
Page 213 of 287

Vehicle care211Vehicle careGeneral Information...................212
Accessories and vehicle modifications .......................... 212
Vehicle storage ........................212
End-of-life vehicle recovery .....213
Vehicle checks ........................... 213
Performing work ......................213
Bonnet ..................................... 214
Engine oil ................................. 214
Engine coolant ......................... 215
Washer fluid ............................ 216
Brakes ..................................... 216
Brake fluid ............................... 216
Vehicle battery ......................... 217
Diesel fuel system bleeding .....219
Wiper blade replacement ........219
Bulb replacement .......................220
Halogen headlights ..................220
Xenon headlights .....................223
Front fog lights ......................... 224
Front turn lights .......................225
Tail lights ................................. 226
Side turn lights ......................... 228
Centre high-mounted brake light ......................................... 229Number plate light...................230
Interior lights ............................ 230
Electrical system ........................231
Fuses ....................................... 231
Engine compartment fuse box . 232
Instrument panel fuse box .......232
Vehicle tools .............................. 234
Tools ........................................ 234
Wheels and tyres .......................237
Winter tyres ............................. 237
Tyre designations ....................237
Tyre pressure .......................... 237
Tyre deflation detection
system .................................... 238
Tread depth ............................. 239
Changing tyre and wheel size . 240
Wheel covers ........................... 240
Tyre chains .............................. 240
Tyre repair kit .......................... 241
Wheel changing .......................244
Spare wheel ............................ 245
Jump starting ............................. 250
Towing ....................................... 251
Towing the vehicle ...................251
Towing another vehicle ...........252
Appearance care .......................253
Exterior care ............................ 253Interior care............................. 255
Floor mats ............................... 256
Page 237 of 287
Vehicle care235Opening of the box
1. The box is secured by two barswhich prevent its escaping from
its housing, if it is not stowed
correctly.
2. Press latches and slide them inwards to release the box. Lift thebox slightly to release it from bar
1 . Pull it out.
3. Lift the box upwards to take it past
bar 2.
4. Unclip retainers on the box cover
and open it.
Stowing the box
Page 238 of 287
236Vehicle care1. Insert the box with the frontinclined upwards. To take it past
bar 2, push the box in and down.
2. Once the box is in the housing,
push it down and slide latches
outwards to secure it.
Vehicles with spare wheel
The box contains:
1. a wheelbrace for removing the wheel bolts and operating the
jack.
2. a jack to raise the vehicle.
3. wheel bolt cap or hub cap removal
tools. These tools are designed to
remove the wheel bolt head
covers on alloy wheels or the hub
cap on steel wheels.
4. a wheelbrace adapter for the security wheel bolts.
5. a towing eye.
Vehicles without spare wheel
The box contains a towing eye and a
tyre repair kit.
Tyre repair kit 3 241.
Page 253 of 287

Vehicle care2513. Connect the black lead to thenegative terminal of the booster
battery.
4. Connect the other end of the black
lead to a vehicle grounding point
of your vehicle in the engine
compartment.
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.
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. three 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
Press in the middle of the cover plate
and slide to the upper left corner to
unclip it.
The towing eye is stowed with the vehicle tools 3 234.
Screw in the towing eye clockwise as
far as it will go until it stops in a
horizontal position.
Attach a tow rope – or better a tow rod
– to the towing eye.
The towing eye must only be used for
towing and not for recovering the
vehicle.
Switch on ignition to release steering
wheel lock and to permit operation of
brake lights, horn and windscreen
wiper.