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Vehicle care215Electrical system
Fuses Data on the replacement fuse must
match the data on the defective fuse.
There are two fuse boxes in the
vehicle:
● engine compartment
● instrument panel
Before replacing a fuse, turn off the
respective switch and the ignition.
A blown fuse can be recognised by its melted wire.Caution
Do not replace the fuse until the
cause of the fault has been
remedied.
Some functions are protected by
several fuses.
Fuses may also be inserted without
existence of a function.
Fuse extractor
A fuse extractor may be located in
front of the fuse box in the instrument
panel.Place the fuse extractor on the
various types of fuse from the top or
side, and withdraw fuse.
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216Vehicle careEngine compartment fuse
box
The fuse box is in the front left of the
engine compartment.
Disengage the cover and remove it. Depending on the version, different
engine compartment fuse boxes are
available:
No.Circuit9Anti-theft alarm system10Stop-start system11Diesel exhaust system13Stop-start system15Electric power steering / Radar22Horn29StarterNo.Circuit1Climate control2Steering wheel4Electric parking brake6Air vent16Front fog lights18Right high beam (Halogen) /
Right headlight (LED)19Left high beam (Halogen) /
Right headlight (LED)21Starter
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Vehicle care217No.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 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:No.Circuit1Electronic key system / Anti-
theft alarm system4Stop-start system5Advanced parking assist /
Camera / Transmission control
module7Amplifier8Rear wiperNo.Circuit10Central locking system11Central locking system13Anti-theft alarm system16Electrical power steering wheel18OnStar21Interior lights22Glovebox light23Blind spot alert system / Exterior
mirror adjustment / Inductive
charging24Column electrical assembly25Interior mirror26Seat belt reminder27Camera / Rain sensor / Auto‐
matic light control28USB / Infotainment31Airbag
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218Vehicle careNo.Circuit33Power outlet front36InfotainmentNo.Circuit1Interior mirror / Electrical power
steering wheel / Selective ride
control / Radar / Diesel exhaust
system3Trailer provisions control
module4HornNo.Circuit5Windscreen washer6Windscreen washer7Power outlet rear10Doors lock / Tailgate lock11Doors 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 systemNo.Circuit22Camera / Rain sensor / Auto‐
matic light control23Seat belt reminder24Automatic transmission /
Advanced parking assist /
Panoramic view system25Airbag26Electronic Stability Control27Alarm28OnStar29Infotainment32Cigarette lighter / Power outlet front34Heated rear window / Heated
windscreen / Inductive charging35Light switch / Diagnostic
connector module36Lighting
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Vehicle care219Vehicle 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.
Vehicles without spare wheel
The towing eye and the chocks are
located in a box below the floor cover in the load compartment.
Tyre repair kit 3 224.
Vehicles with audio speaker system
The towing eye and the chocks are
located in a box below the floor cover in the load compartment.
Tyre repair kit 3 224.
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220Vehicle careWheels and tyres
Tyre condition, wheel condition Drive over edges slowly and at right
angles if possible. Driving over sharp
edges can cause tyre and wheel
damage. Do not trap tyres on the kerb when parking.
Regularly check the wheels for
damage. Seek the assistance of a
workshop in the event of damage or
unusual wear.
Winter tyres
Winter tyres improve driving safety at temperatures below 7 °C and shouldtherefore be fitted on all wheels.
In accordance with country-specific
regulations, affix the speed sticker in
the driver's field of view.
All tyre sizes are permitted as winter
tyres 3 253.Tyre designations
E.g. 225/55 R 18 98 V225:tyre width, mm55:cross-section ratio (tyre height
to tyre width), %R:belt type: RadialRF:type: RunFlat18:wheel diameter, inches98:load index e.g. 98 is equivalent
to 750 kgV:speed code letter
Speed code letter:
Q:up to 100 mphS:up to 112 mphT:up to 118 mphH:up to 130 mphV:up to 150 mphW:up to 168 mph
Choose a tyre appropriate for the
maximum speed of your vehicle.
The maximum speed is achievable at kerb weight with driver (75 kg) plus
125 kg payload. Optional equipment
could reduce the maximum speed of
the vehicle.
Performance 3 249.
Directional tyres
Directional tyres should be mounted
so that they rotate in the correct
direction. The proper rotation
direction is indicated by a symbol (e.g. an arrow) on the sidewall.
Tyre pressure
Check the pressure of cold tyres at
least every 14 days and before any
long journey. Do not forget the spare
wheel. This also applies to vehicles
with tyre pressure monitoring system.
Tyre pressure 3 253.
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Vehicle care221The tyre pressure information label
on the left door frame indicates the
original equipment tyres and the
correspondent tyre pressures.
The tyre pressure data refers to cold
tyres. It applies to summer and winter
tyres.
Always inflate the spare tyre to the
pressure specified for full load.
The ECO tyre pressure serves to
achieve the smallest amount of fuel
consumption possible.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and fuel economy and will increase tyre
wear.
Tyre pressures differ depending on
various options. For the correct tyre
pressure value, follow the procedure
below:
1. Identify the engine identifier code.
Engine data 3 247.
2. Identify the respective tyre.
The tyre pressure tables show all
possible tyre combinations 3 253.For the tyres approved for your
vehicle, refer to the EEC Certificate of
Conformity provided with your vehicle or other national registration
documents.
The driver is responsible for correct
adjustment of tyre pressure.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
9 Warning
For specific tyres the
recommended tyre pressure as
shown in the tyre pressure table may exceed the maximum tyre
pressure as indicated on the tyre.
Never exceed the maximum tyre
pressure as indicated on the tyre.
Temperature dependency
The tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase. Tyre pressure
values provided on the tyre
information label and tyre pressure
chart are valid for cold tyres, which means at 20 °C.
The pressure increases by nearly
1.5 psi for a 10 °C temperature
increase. This must be considered
when warm tyres are checked.
Tyre deflation detectionsystem
The tyre deflation detection system
continually checks the rotation speed
of all four wheels and warns on low
tyre pressure condition once vehicle
is driving. This is achieved by
comparing tyre rolling circumference
with reference values and further
signals.
If a tyre loses pressure the control
indicator w illuminates and a warning
message is displayed in the Driver Information Centre.
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222Vehicle careIn this case reduce speed, avoid
sharp cornering and strong braking.
Stop at next safe opportunity and
check tyre pressure.
Control indicator w 3 97.
After adjusting tyre pressure initialise
system to extinguish the control
indicator and restart system.Caution
Deflation detection system warns
just about low tyre pressure
condition and does not replace
regular tyre maintenance by the
driver.
In case of a system malfunction a
message is displayed in the Driver
Information Centre. Set correct tyre
pressure and reinitialise system. If the
failure continues to be displayed,
contact a workshop. The system is
inoperable when ABS or ESC has a
malfunction or a temporary spare
wheel is used. Once the road tyre has
been refitted, check the tyre pressure with cold tyres and initialise the
system.
System 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 253.
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).