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202Vehicle careCaution
When transporting the vehicle on
a train or on a recovery vehicle, the
mud flaps might be damaged.
Cold protection covers
In order to prevent the accumulation
of snow at the radiator cooling fan, it is recommended to install removable
protection covers.
The protection covers must be
professionally installed, consult a
workshop.
Caution
The protection covers must be removed when one of the
following conditions occur:
● The ambient temperature is abbove 10 °C.
● When the vehicle is towed.
● The vehicle is driven at speeds
above 120 km/h.
Vehicle storage
Storage for a long period of time If the vehicle is to be stored for several months:
● Wash and wax the vehicle.
● Have the wax in the engine compartment and underbody
checked.
● Clean and preserve the rubber seals.
● Fill up fuel tank completely.
● Change the engine oil.
● Drain the washer fluid reservoir.
● Check the coolant antifreeze and
corrosion protection.
● Adjust tyre pressure to the value specified for full load.
● Park the vehicle in a dry, well ventilated place. Engage first or
reverse gear or set selector lever
to P. Prevent the vehicle from
rolling.
● Do not apply the parking brake.● Open the bonnet, close all doors and lock the vehicle.
● Disconnect the clamp from the negative terminal of the vehicle
battery. Note that all systems are
not functional, e.g. anti-theft
alarm system.
Putting back into operation
When the vehicle is to be put back into
operation:
● Connect the clamp to the negative terminal of the vehicle
battery. Initialize the power
windows 3 40.
● Check tyre pressure.
● Fill up the washer fluid reservoir.
● Check the engine oil level.
● Check the coolant level.
● Fit the number plate if necessary.
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206Vehicle carethe coolant concentration checked
and have the cause of the coolant
loss remedied by a workshop.
Washer fluid
Fill with clean water mixed with a
suitable quantity of approved
windscreen washer fluid which
contains antifreeze.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
Washer fluid 3 244.
Brakes In the event of minimum thickness of
the brake lining, a squealing noise
sounds during braking.
Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe DANGER and MAX marks.
If fluid level is below DANGER seek
the assistance of a workshop.
Brake and clutch fluid 3 244.
Vehicle battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Page 213 of 277
Vehicle care211Tail lights
Tail lights, daytime running lights and
centre high-mounted brake light are
designed as LEDs. In case of failure, have LEDs replaced by a workshop.
Light assembly in the body
1. Open the tailgate then unclip the access cover on the relevant side.
2. Slacken the lamp fixing nut usinga box spanner or socket.
To avoid losing the nut if it drops
into the wing trim, first place a
cloth below it.
3. Manually unscrew and remove the lamp fixing nut.
4. Disengage the retaining clip, while pushing the lamp out
slightly.5. From the outside, carefully withdraw the light assembly from
recess and remove. Take care
that the cable duct remains in
position.
6. Turn the bulb socket anticlockwise and remove it from
the light assembly.
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212Vehicle care
7. Detach the bulb from the bulbsocket and replace the bulb.
Brake light( 1)
Turn light ( 2)
8. Insert the bulb socket into the light
assembly. Fit the light assembly in the recess and tighten the lamp
fixing nut from the inside. Attach the cover.
Light assembly in the tailgate
1. Open the tailgate and remove the
cover.
Page 215 of 277
Vehicle care2132. Slacken the lamp fixing nut usinga box spanner or socket.
3. Manually unscrew and remove the lamp fixing nut.
4. Disengage the retaining clip, while pushing the light assembly
out slightly.
5. From the outside, carefully withdraw light assembly from
recess and remove. Take care
that the cable duct remains in
position.
6. Turn the bulb socket anticlockwise and remove it from
the light assembly.
7. Detach the bulb from the bulb socket and replace the bulb:
Reverse light ( 1)
Rear fog light ( 2)
8. Insert the bulb socket into the light
assembly. Fit the light assembly in the recess and tighten the lamp
fixing nut from the inside. Attach
the cover.
Centre high-mounted brake light The centre high-mounted brake light
is designed as LED and can not be
changed.
Have lights repaired by a workshop in
case of failure.
Bulb check
Switch on the ignition, operate and
check all lights.
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Vehicle care217No.Circuit1Climate control2Steering wheel4Electric parking brake6Air vent16Front fog lights18Right high beam (Halogen) /
Right headlight (LED)19Left high beam (Halogen) /
Right headlight (LED)21StarterNo.Circuit22Heated windscreen26Additional Heater / Heated
windscreen
After having changed defective fuses,
close the fuse box cover and lock it.
If the fuse box cover is not closed
correctly, malfunction may occur.
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind a cover in the
instrument panel at the left side. Open
the cover and remove it by pressing
the lock.
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox and
remove the cover.
Depending on the version, different
instrument panel fuse boxes are
available:
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Vehicle care219No.Circuit11Doors lock / Tailgate lock12Stop-start system / Diagnostic
connector module / Brake
system13Infotainment / Climate control
system14Alarm siren15Climate control system16Stop-start system / Brake
system17Instrument cluster19Column electrical assembly /
Steering wheel controls21Anti-theft alarm system22Camera / Rain sensor / Auto‐
matic light control23Seat belt reminder24Automatic transmission /
Advanced parking assist /
Panoramic view systemNo.Circuit25Airbag26Electronic Stability Control27Alarm28OnStar29Infotainment32Cigarette lighter / Power outlet front34Heated rear window / Heated
windscreen / Inductive charging35Light switch / Diagnostic
connector module36LightingVehicle tools
Tools
Vehicles with spare wheel Open the floor cover of the load
compartment 3 72.
Remove the cover of the tool box.
The jack, the towing eye, chocks and
the tools are located in the tool box.
Page 225 of 277

Vehicle care223System initialisation
After tyre pressure correction or
wheel change, the system must be
initialised to learn new circumference reference values:
1. Always ensure that all four tyres have correct tyre pressure3 257.
2. Apply parking brake. 3. Press w to reset deflation
detection system.
4. Reset is confirmed by pop-up indication.
After initialisation system
automatically calibrates to new tyre
pressures during driving. After longer
drive the system will adopt and
monitor new pressures.
Always check tyre pressure with cold
tyres.
System has to be reinitialised when: ● Tyre pressure has been changed
● Load condition has been changed
● Wheels have been swapped or exchanged
The system will not warn
instantaneously on a tyre blow out or
a rapid deflation. This is due to
required calculation time.
Tread depthCheck tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm
(4 mm for winter tyres).For safety reasons, it is
recommended that the tread depth of
the tyres on one axle should not vary
by more than 2 mm.
The legally permissible minimum
tread depth (1.6 mm) has been
reached when the tread has worn
down as far as one of the tread wear
indicators (TWI). Their position is
indicated by markings on the
sidewall.
If there is more wear at the front than
the rear, swap round front wheels and rear wheels periodically. Ensure that
the direction of rotation of the wheels
remains the same.