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166Driving and operatingTrailer hitch
General information
Only use towing equipment that has
been approved for your vehicle.
Entrust fitting of towing equipment at
a later date to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment.
Driving characteristics and towing tips
In the case of trailers with brakes,
attach the breakaway stopping cable.
Before attaching a trailer, lubricate
the coupling ball. However, do not do so if a stabiliser, which acts on thecoupling ball, is being used to reduce
snaking movements. For trailers with
low driving stability the use of a
stabiliser is recommended.
A maximum speed of 80 km/h must
not be exceeded, even in countries
where higher speeds are permitted.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 3 239.
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 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).
The permissible gross train weight
must not be exceeded. This weight is
specified on the identification plate
3 218.
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.
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Driving and operating167In the case of trailer loads of
1200 kg or more, the vertical coupling
load should not be less than 50 kg.
Rear axle loadWhen 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.
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) 3 152.Auxiliary features
Power take-off
Activation
To activate the power take-off, with
the vehicle stationary and the engine
idling:
● Set the gearshift lever to neutral (vehicles with manual
transmission automated:
selector lever in position N).
● Depress the clutch pedal.
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Vehicle care169Vehicle careGeneral Information...................170
Accessories and vehicle modifications .......................... 170
Vehicle storage ........................170
End-of-life vehicle recovery .....171
Vehicle checks ........................... 171
Performing work ......................171
Bonnet ..................................... 171
Engine oil ................................. 172
Engine coolant ......................... 173
Power steering fluid .................174
Washer fluid ............................ 175
Brakes ..................................... 175
Brake fluid ............................... 175
Vehicle battery ......................... 175
Diesel fuel filter ........................178
Diesel fuel system bleeding .....178
Wiper blade replacement ........179
Bulb replacement .......................179
Headlights ............................... 179
Adaptive forward lighting .........182
Fog lights ................................. 182
Front turn signal lights .............182
Tail lights ................................. 183
Side turn signal lights ..............184Centre high-mounted brake
light ......................................... 185
Number plate light ...................185
Interior lights ............................ 186
Instrument panel illumination ...187
Electrical system ........................187
Fuses ....................................... 187
Engine compartment fuse box . 188
Instrument panel fuse box .......189
Load compartment fuse box ....190
Vehicle tools .............................. 192
Tools ........................................ 192
Wheels and tyres .......................193
Tyres ....................................... 193
Winter tyres ............................. 193
Tyre designations ....................193
Tyre pressure .......................... 193
Tyre pressure monitoring system .................................... 194
Tread depth ............................. 196
Changing tyre and wheel size . 197 Wheel covers ........................... 197
Tyre chains .............................. 197
Tyre repair kit .......................... 198
Wheel changing .......................201
Spare wheel ............................ 203
Jump starting ............................. 206Towing....................................... 208
Towing the vehicle ...................208
Towing another vehicle ...........209
Appearance care .......................209
Exterior care ............................ 209
Interior care ............................. 211
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172Vehicle care
Pull the safety catch, located slightly
left of centre, and open the bonnet.
Pull up the support rod from its holder,
then secure it in the right side hook on the underside of the bonnet.
If the bonnet is opened during an Autostop, the engine will be restarted
automatically for safety reasons.
Closing Before closing the bonnet, press the
support into the holder.
Lower the bonnet and allow it to drop into the catch from a low height
(20-25 cm). Check that the bonnet is
engaged.Caution
Do not press the bonnet into the
latch, to avoid dents.
Engine oil
Check the engine oil level manually
on a regular basis to prevent damage
to the engine.
Ensure that the correct specification
of oil is used. Recommended fluids
and lubricants 3 215.
The maximum engine oil
consumption is 0.6 l per 1000 km.
Check with the vehicle on a level
surface. The engine must be at
operating temperature and switched
off for at least ten minutes.
Pull out the dipstick, wipe it clean,
insert it to the stop on the handle, pull
out and read the engine oil level.
When the engine oil level has
dropped to the MIN mark, top-up
engine oil.
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Vehicle care1793. Repeat Step 1 and 2 multipletimes.
4. Turn key to position 3, then return
to 0.
If the engine cannot be started after
several attempts to bleed the diesel
fuel system, seek the assistance of a
workshop.
Wiper blade replacement
Wiper blades on the windscreen
Lift wiper arm, press retaining clip
towards wiper arm and detach wiper
blade.
Attach the wiper blade slightly angled
to the wiper arm and push until it
engages.
Lower wiper arm carefully.Bulb replacement
Switch off the ignition and turn off the
relevant switch or close the doors.
Only hold a new bulb at the base. Do not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Bulb check After a bulb replacement, switch on
the ignition, operate and check the
lights.
Headlights
Page 182 of 255
180Vehicle careHeadlights have separate systems forhigh beam 1 and low beam 2.
High beam
1. Remove headlamp protective cover.
2. Detach wiring connector from bulb.
3. Release spring clip.
4. Withdraw bulb from reflector housing.
5. Renew bulb and secure with spring clip.
6. Reattach wiring connector to bulb.
7. Replace headlamp protective cover.
Low beam
1. Remove headlamp protective cover.
2. Detach wiring connector from bulb.
3. Rotate bulb holder anti-clockwise to disengage.
4. Withdraw bulb holder from reflector housing.
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Vehicle care181
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 headlamp protective cover.
Sidelights
1. Remove protective cover.
2. Detach wiring connector from bulb.
3. Rotate bulb holder anti-clockwise to disengage.
4. Withdraw bulb holder from reflector housing.
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.
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182Vehicle careAdaptive forward lightingCornering light
Headlights have separate systems forhigh beam 1 and low beam 2. The
cornering light 3 is located between
the headlights.
1. Remove protective cover.
2. Detach wiring connector from bulb.
3. Rotate bulb holder anti-clockwise to disengage.
4. Withdraw bulb holder from reflector housing.
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.
Fog lights
Have the front fog light bulbs replaced by a workshop.
Front turn signal lights
1. Remove protective cover.
2. Detach wiring connector from bulb.
3. Rotate bulb holder anti-clockwise to disengage.
4. Withdraw bulb holder from reflector housing.