Page 184 of 247

182Vehicle care
Power steering fluid level normally
does not have to be checked. If an
unusual noise sounds during steering or the power steering reacts
unusually, seek the assistance of a
workshop.
Washer fluid
Fill with clean water mixed with a
suitable quantity of 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.
Brakes
In the event of minimum thickness ofthe 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 fluid
9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe MIN and MAX marks.
If fluid level is below MIN seek the
assistance of a workshop.
Brake and clutch fluid 3 222.
Vehicle battery Vehicles without stop-start system
will be equipped with a lead acid
battery. Vehicles with stop-start
system will be equipped with an
AGM battery which is not a lead acid
battery.
Page 192 of 247
190Vehicle careTail lights
1. Open and remove the cover onthe inside of the boot lid by loosen
the screw with a coin.
2. Brake lights, tail lights and fog light are designed as Light
Emitting Diodes (LEDs) and
cannot be changed.
Remove bulb holder by turning
anti-clockwise.
Turn signal lights ( 1)
Reversing lights ( 2)
3. Remove and replace bulb
4. Insert bulb holder into tail light assembly and turn clockwise.
5. Close the cover by inserting thefastener clips first. Lock the cover
by turning the screw clockwise
with a coin.
Additional lights in the boot lid
frame
1. Open the boot lid.
Page 197 of 247
Vehicle care195
No.Circuit1Engine control module2Lambda sensor3Fuel injection, ignition system4Fuel injection, ignition system5–6Mirror heating7Fan control8Lambda sensor, engine cooling9Rear window sensor10Vehicle battery sensor11Trunk release12Adaptive forward lighting, auto‐
matic light control13ABS Valves14–15Engine control module16StarterNo.Circuit17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear eletrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS pump31–32AirbagNo.Circuit33Adaptive forward lighting, auto‐
matic light control34Exhaust gas recirculation35Power windows, rain sensor,
exterior mirror36Climate control37–38Vacuum pump39Fuel system control module40Windscreen washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44–45Radiator fan46–47Horn
Page 199 of 247
Vehicle care197
No.Circuit1Displays2Body control unit, exterior lights3Body control unit, exterior lights4Infotainment system5Infotainment system, instru‐
ment6Power outlet, cigarette lighter7Power outlet8Body control module, left low
beam9Body control module, right low
beam10Body control module, door locks11Interior fan12Driver power seat13Passenger power seat14Diagnostic connector15AirbagNo.Circuit16Boot lid relay17Air conditioning system18Service diagnose19Body control module, brake
lights, tail lights, interior lights20-21Instrument panel22Ignition system23Body control module24Body control module25–26Trunk power outlet accessory
Load compartment fuse
box
The fuse box is on the left side of the
load compartment behind a cover.
Remove the cover.
Fuse assignments
Page 206 of 247

204Vehicle care
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
is the same as before.
Tyres age, even if they are not used.
We recommend tyre replacement
every 6 years.
Changing tyre and wheel
size If tyres of a different size than those
fitted at the factory are used, it may be necessary to reprogramme the
speedometer as well as the nominal
tyre pressure and make other vehicle
modifications.
After converting to a different tyre
size, have the label with tyre
pressures replaced.9 Warning
Use of unsuitable tyres or wheels
may lead to accidents and will
invalidate the vehicle type
approval.
Wheel covers
Wheel covers and tyres that are
factory approved for the respective
vehicle and comply with all of the
relevant wheel and tyre combination requirements must be used.
If the wheel covers and tyres used are
not factory approved, the tyres must
not have a rim protection ridge.
Wheel covers must not impair brake
cooling.9 Warning
Use of unsuitable tyres or wheel
covers could lead to sudden
pressure loss and thereby
accidents.
Vehicles with steel wheels: When
using locking wheel nuts, the wheel
covers might not be attached to the
steel wheels.
Page 207 of 247

Vehicle care205Tyre chains
Use tyre chains only on front wheels.
Tyre chains are permitted on tyres of
size 225/55 R 17. Always use fine
mesh chains that add no more than
10 mm to the tyre tread and the
inboard sides (including chain lock).
Tyre chains are also permitted on
tyres of size 245/45 R 18. Always use fine mesh chains that add no more
than 7 mm to the tyre tread and the
inboard sides (including chain lock).
9 Warning
Damage may lead to tyre blowout.
The use of tyre chains is not permitted
on the temporary spare wheel.
Tyre repair kit
Minor damage to the tyre tread can be
repaired with the tyre repair kit.
Do not remove foreign bodies from
the tyres.
Tyre damage exceeding 4 mm or that
is at tyre's sidewall cannot be repaired with the tyre repair kit.
9 Warning
Do not drive faster than 50 mph.
Do not use for a lengthy period.
Steering and handling may be
affected.
If you have a flat tyre:
Apply the parking brake and engage
first gear, reverse gear or P.
The tyre repair kit is in a box under the
floor cover in the load compartment.
Page 210 of 247

208Vehicle care
If tyre pressure is more than
1.3 bar , set it to the correct value.
Repeat the procedure until there
is no more loss of pressure.
If the tyre pressure has fallen
below 1.3 bar, the vehicle must
not be used. Seek the assistance
of a workshop.
18. Stow away the tyre repair kit in the
load compartment.
Notice
The driving characteristics of the
repaired tyre are severely affected,therefore have this tyre replaced.
If unusual noise is heard or the
compressor becomes hot, turn
compressor off for at least
30 minutes.
The built-in safety valve opens at a
pressure of 102 psi.
Note the expiry date of the kit. After
this date its sealing capability is no
longer guaranteed. Pay attention to
storage information on sealant
bottle.
Replace the used sealant bottle. Dispose of the bottle as prescribed
by applicable laws.
The compressor and sealant can be
used from approx. -30 °C.
The adapters supplied can be used
to pump up other items e.g.
footballs, air mattresses, inflatable
dinghies etc. They are located on the underside of the compressor. To
remove, screw on compressor air hose and withdraw adapter.
Wheel changing Some vehicles are equipped with a
tyre repair kit instead of a spare wheel 3 205.Make the following preparations and
observe the following information:
■ Park the vehicle on a level, firm and
non-slippery surface. The front wheels must be in the straight-
ahead position.
■ Apply the parking brake and engage first gear, reverse gear or
P .
■ Remove the spare wheel 3 211.
■ Never change more than one wheel
at once.
■ Use the jack only to change wheels
in case of puncture, not for
seasonal winter or summer tyre
change.
■ If the ground on which the vehicle is standing is soft, a solid board
(max. 1 cm thick) should be placed
under the jack.
■ Take heavy objects out of the vehicle before jacking up.
■ No people or animals may be in the
vehicle when it is jacked-up.
■ Never crawl under a jacked-up vehicle.
Page 217 of 247

Vehicle care215
■ The vehicles must not come intocontact with each other during the
jump starting process.
■ Apply the parking brake, transmission in neutral, automatic
transmission in P.
■ Open the positive terminal protection caps of both batteries.
Lead connection order:
1. Connect the red lead to the positive terminal of the booster
battery.
2. Connect the other end of the red lead to the positive terminal of the
discharged battery.
3. Connect the black lead to the negative terminal of the booster
battery.
4. Connect the other end of the black
lead to a vehicle grounding point,
such as the engine block or an
engine mounting bolt. Connect as far away from the discharged
battery as possible, however at
least 60 cm.
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. 3 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.