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164Driving and operatingDeactivation
It is possible to permanently or
temporarily deactivate the system.
Temporary deactivation
Temporarily deactivate the system by
pressing r on the instrument panel
with the ignition on. LED illuminates in
the button when deactivated.
When reverse gear is selected, no
acoustic signal will sound, indicating
deactivation.
The function is reactivated by
pressing r again or the next time
the ignition is switched on.
Permanent deactivation
Permanently deactivate the system
by pressing and holding r on the
instrument panel for approx. three seconds with the ignition on.
LED illuminates continuously in the
button when permanently
deactivated.
The system is deactivated and will not
operate. When reverse gear is
selected, no acoustic signal will
sound, indicating deactivation.
The function is reactivated by
pressing and holding r for approx.
three seconds.
Fault
If the system detects an operating fault, when selecting reverse gear a
continuous acoustic alarm will sound for approx. three seconds. Consult a
workshop to have the cause of the
fault remedied.Caution
When reversing, the area should
be free from obstacles which could impact on the underside of the
vehicle.
Impact to the rear axle, which may
not be visible, could lead to
uncharacteristic changes in the
vehicle handling. In the event of
such an impact, consult a
workshop.
Basic notes on parking assist
system
9 Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention must be paid to
low obstacles which can damage
the lower part of the bumper.
Page 175 of 261

Driving and operating173● Press switch on the instrumentpanel; LED in switch illuminates
after approx. two seconds.
● Release the clutch pedal.
The engine idle speed increases to
1,200 rpm.Caution
During operation of the power
take-off, never move the selector
lever out of neutral (vehicles with
manual transmission automated:
selector lever in position N), to
avoid damage to the transmission.
If a gear change becomes
necessary, i.e. to adjust the driving
speed, the power take-off must always be deactivated first.
Deactivation
To deactivate the power take-off: ● Depress the clutch pedal.
● Press switch on the instrument panel; LED in switch
extinguishes after approx.
two seconds.
● Release the clutch pedal.
Fault
If the LED in the switch does not
illuminate when attempting to activate the power take-off and/or the system
does not operate:
Gradually release the clutch pedal.
- or - ● Set the gearshift lever to neutral (vehicles with manual
transmission automated:
selector lever in position N).
● Depress the clutch pedal.
● Press switch on the instrument panel; LED in switch illuminatesafter approx. two seconds.
● Release the clutch pedal.
Then repeat the above procedure.
Note
The power take-off function is not
available when control indicator A
3 97, C 3 98 or W 3 99 is
illuminated.
Page 176 of 261

174Vehicle careVehicle careGeneral Information...................175
Accessories and vehicle modifications .......................... 175
Vehicle storage ........................175
End-of-life vehicle recovery .....176
Vehicle checks ........................... 176
Performing work ......................176
Bonnet ..................................... 176
Engine oil ................................. 177
Engine coolant ......................... 178
Power steering fluid .................179
Washer fluid ............................ 180
Brakes ..................................... 180
Brake fluid ............................... 180
Vehicle battery ......................... 181
Diesel fuel filter ........................183
Diesel fuel system bleeding .....183
Wiper blade replacement ........184
Bulb replacement .......................185
Headlights ............................... 185
Adaptive forward lighting .........187
Fog lights ................................. 188
Front turn signal lights .............188
Tail lights ................................. 189
Side turn signal lights ..............190Centre high-mounted brake
light ......................................... 191
Number plate light ...................192
Interior lights ............................ 192
Instrument panel illumination ...193
Electrical system ........................194
Fuses ....................................... 194
Engine compartment fuse box . 195
Instrument panel fuse box .......195
Load compartment fuse box ....196
Vehicle tools .............................. 198
Tools ........................................ 198
Wheels and tyres .......................199
Tyres ....................................... 199
Winter tyres ............................. 200
Tyre designations ....................200
Tyre pressure .......................... 200
Tyre pressure monitoring system .................................... 201
Tread depth ............................. 203
Changing tyre and wheel size . 203 Wheel covers ........................... 204
Tyre chains .............................. 204
Tyre repair kit .......................... 204
Wheel changing .......................208
Spare wheel ............................ 210
Jump starting ............................. 213Towing....................................... 215
Towing the vehicle ...................215
Towing another vehicle ...........216
Appearance care .......................217
Exterior care ............................ 217
Interior care ............................. 219
Page 195 of 261
Vehicle care193Load compartment light
1. Remove lamp assembly using aflat blade screwdriver.
2. Detach wiring connector from lamp assembly.
3. Remove lens cover and renew bulb.
4. Install lens cover and attach wiring connector to lamp
assembly.
5. Install lamp assembly.
Front door panel light
1. Remove lamp assembly using a flat blade screwdriver.
2. Rotate bulb holder anti-clockwise to disengage.
3. Renew bulb and insert the bulb holder.
4. Install lamp assembly.
Rear courtesy lights
Have bulbs replaced by a workshop.
Glovebox light
Have bulbs replaced by a workshop.
Instrument panel illumination
Have bulbs replaced by a workshop.
Page 196 of 261

194Vehicle careElectrical systemFuses
Data on the replacement fuse must
match the data on the defective fuse.
There are two fuse boxes in the
vehicle:
● on the left-hand side of the instrument panel, behind the trimpanel
● in the engine compartment located below the coolant
expansion tankCombi
An additional fuse box is located
behind a trim panel on the right-hand
side of the load compartment, beside
the rear door.Bus
An additional fuse box is located on
the lower right-hand side of the load
compartment, below the step trim
panel.
Before replacing a fuse, turn off the
respective switch and the ignition.A blown fuse can be recognised by its melted wire. Do not replace the fuse
until the cause of the fault has been
remedied.
It is advisable to carry a full set of
fuses. Consult a workshop.
Some functions are protected by
several fuses.
Fuses may also be inserted without existence of a function.
Note
Not all fuse box descriptions in this
manual may apply to your vehicle.
When inspecting the fuse box, refer
to the fuse box label.
Fuse extractor
Page 197 of 261
Vehicle care195
To help in replacing fuses, a fuse
extractor is located in the instrument
panel fuse box.
Place the fuse extractor on the
various types of fuse from the top or
side, and withdraw fuse.
Engine compartment fusebox
Located below the coolant expansion tank.
Some circuits may be protected by
several fuses.
Due to restricted accessibility, have
fuses replaced by a workshop.SymbolCircuitSRight side lightsTLeft side lightsWRight low beamaLeft low beam>Front fog lightLLeft high beamNRight high beamuABSKWindscreen wiperSymbolCircuitnHeating and ventilation
system / Air conditioningVHeated windscreenQPneumatic suspension
Instrument 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.
Page 198 of 261

196Vehicle careSome circuits may be protected by
several fuses.SymbolCircuitZInfotainment system / Seat
heating / Driver Information
Centre / Audio connec‐
tions / Alarm?Power outletÌCigarette lightereInstrument panelUCentral locking0Interior lightsOTurn signals / Rear fog
lights / Body control moduleDIAGDiagnostic connectoruABS / Electronic Stability
ProgramdInterior lights / Brake lightsZBody control moduleSTOPBrake lightSymbolCircuitIBody control module /
Power windows / Heating
and ventilation system / Air
conditioningmLeft heated rear windownRight heated rear windowRWindscreen washerMElectronic immobiliserUHeated seatsFBLCornering lightlHands-free connection&TachographPTOPower take-offjHornÍPreheating / Diesel fuel filterxClimate control fandHeated exterior mirrorsTLeft-hand side lightSRight-hand side lightSymbolCircuitONavigation systemADPAdditional adaptations,Power windows / Body
control module
Load compartment fuse box
Combi
Located behind the trim panel on the
right-hand side of the load
compartment, beside the rear door.
Page 221 of 261

Vehicle care219Interior care
Interior and upholstery
Only clean the vehicle interior,
including the instrument panel fascia
and panelling, with a dry cloth or
interior cleaner.
Clean leather upholstery with clear
water and a soft cloth. In case of
heavy soiling, use leather care.
The instrument cluster and the
displays should only be cleaned using a soft damp cloth. If necessary use a
weak soap solution.
Clean fabric upholstery with a
vacuum cleaner and brush. Remove
stains with an upholstery cleaner.
Clothing fabrics may not be
colourfast. This could cause visible
discolourations, especially on light-
coloured upholstery. Removable
stains and discolourations should be
cleaned as soon as possible.
Clean seat belts with lukewarm water or interior cleaner.Caution
Close Velcro fasteners as open
Velcro fasteners on clothing could damage seat upholstery.
The same applies to clothing with
sharp-edged objects, like zips or
belts or studded jeans.
Plastic and rubber parts
Plastic and rubber parts can be
cleaned with the same cleaner as
used to clean the body. Use interior cleaner if necessary. Do not use any
other agent. Avoid solvents and petrol in particular. Do not use high-
pressure jet cleaners.