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238Vehicle care9. Attach the cable to the retainer.
10. Attach the light assembly to the vehicle body and tighten the
securing nuts from the inside of
the load compartment. Attach
cover.
Depending on the version, tail lights
and brake lights are designed as
LEDs. In case of failure, have LEDs
replaced by a workshop.
Light assembly in the tailgate
1. Release the cover in the tailgate and remove it.
2. Unscrew the plastic securing nutby hand.
3. Carefully withdraw the lightassembly from the recesses and
remove.
4. Press the three retaining lugs and
remove the bulb carrier from the
light assembly.
5. Remove and replace the bulb:
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Vehicle care239Reverse light (1)
Tail light ( 2)
Rear fog light ( 3) (left side)
6. Insert the bulb carrier into the tail light assembly.
7. On version with LED tail lightsonly reverse light bulb can be
replaced: remove bulb holder in
the light assembly by turning.
Replace bulb in the bulb holder.
8. Fit light assembly on the tailgate and tighten the securing nut from
the inside. Attach cover.
Depending on the version, tail lights
are designed as LEDs. In case of
failure, have LEDs replaced by a
workshop.
Side turn lights To replace bulb, remove lamp
housing:
1. Slide the lamp housing forward and remove it at the back.
2. Turn bulb holder anticlockwiseand remove from housing.
3. Pull bulb from bulb holder and replace it.
Page 247 of 305
Vehicle care245No.Circuit17Body control module 418Body control module 319Data link connector20Airbag system21Climate control system22Central locking system / tailgate23Electronic key system24Power seat memory function25Airbag system steering wheel26Ignition switch / Steering
column lock27Body control module 228USB socket29Cigarette lighter / Power outlet
front30Selector lever31Rear window wiper32Transmission control moduleNo.Circuit33Anti-theft alarm system / Power
sounder34Parking assist / Side blind spot
alert / Infotainment system /
USB socket35SOS36Info Display / Instrument cluster37Infotainment system / radio
After having changed defective fuses,
close the fuse box cover:
1. Apply the cover on the right side.
2. Fold the left side of the cover forwards. Take care that thesecuring clamp is guided as
shown in the illustration.
Load compartment fuse box The fuse box is located on the left side
of the load compartment behind a
cover.
Remove the cover.
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256Vehicle careOn Sports Tourer the tyre repair kit isin a suitcase on the right side of the
load compartment behind a cover.
The suitcase is secured with a strap.
1. Remove the sealant bottle.
2. Insert thumb into the opening and
pull out the compressor.
3. Remove the electrical connection cable and air hose from the
stowage compartments on the
underside of the compressor.
4. Screw the compressor air hose to
the connection on the sealant
bottle.
5. Fit the sealant bottle into the retainer on the compressor.
Set the compressor near the tyre
in such a way that the sealant
bottle is upright.6. Unscrew valve cap from defective
tyre.
7. Screw the filler hose to the tyre valve.
8. The switch on the compressor must be set to J.
9. Connect the compressor plug to the power outlet or cigarette
lighter socket.
To avoid discharging the battery, we recommend running the
engine.
Page 262 of 305

260Vehicle careTo remove:1. Open the floor cover 3 82.
2. The spare wheel is secured with a
wing nut. Unscrew the wing nut
and take out the spare wheel.
Under the spare wheel there is the
box with vehicle tools.
3. When, after a wheel change, no wheel is placed in the spare wheelwell, secure the tool box by
tightening the wing nut as far as it
will go and close floor cover.
4. After wheel change back to full size wheel, place the spare wheel
outside up in the well and secure
with the wing nut.
Only mount one temporary spare
wheel. The permissible maximum
speed on the label on the temporary
spare wheel is only valid for the
factory-fitted tyre size.Fitting the spare wheel
Make the following preparations and
observe the following information:
● Park the vehicle on a level, firm and non-skid 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.
● 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.
● The jack is maintenance-free.
● 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-upvehicle.
● Do not start the vehicle when it is
raised on the jack.
● Clean wheel nuts and thread with
a clean cloth before mounting the
wheel.9 Warning
Do not grease wheel bolt, wheel
nut and wheel nut cone.
1. Steel wheels with cover: Pull off the wheel cover.
Alloy wheels: Disengage wheel
nut caps with a slot screwdriver
and remove. To protect the wheel paint and the cap, wrap a cloth
around the screwdriver tip 3 247.
Page 263 of 305
Vehicle care261
2. Fold out the wheel wrench andinstall ensuring that it locates
securely and loosen each wheel
nut by half a turn.
The wheels might be protected by
locking wheel nuts. To loosen
these specific nuts, first attach the adapter for the locking wheel nuts
onto the head of the nut before
installing the wheel wrench. The
adapter is located in the glovebox.3. Ensure the jack is correctly positioned under the relevant
vehicle jacking point.
4. Set the jack to the necessary height. Position it directly below
the jacking point in a manner that
prevents it from slipping.
Ensure that the edge of the body
fits into the notch of the jack.
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262Vehicle careAttach wheel wrench and with the
jack correctly aligned rotate wheel wrench until wheel is clear of the
ground.
5. Unscrew the wheel nuts. 6. Change the wheel.
7. Screw on the wheel nuts.
8. Lower the vehicle and remove jack.
9. Install the wheel wrench ensuring that it is located securely and
tighten each nut in a crosswise
sequence. Tightening torque is
140 Nm.
10. Align the valve hole in the wheel cover with the tyre valve before
installing.
Install wheel nut caps.
11. Stow and secure the replaced wheel, the vehicle tools 3 247 and
the adapter for the locking wheel
nuts 3 73.
12. Check the tyre pressure of the installed tyre and the wheel nut
torque as soon as possible.
Have the defective tyre renewed or repaired as soon as possible.Stowing a damaged full size
wheel in the load compartment, 5-
door hatchback
The spare wheel well is not designed
for other tyre sizes than the spare
wheel. A damaged full size wheel
must be stowed in the load
compartment.
Vehicle tools 3 247.
Make sure to store the wheel securely in the load compartment 3 90.9 Danger
Always drive with folded up and
engaged rear seat backrests when stowing a damaged full size wheel
in the load compartment.
9 Warning
Storing a jack, a wheel or other
equipment in the load
compartment could cause injury if they are not fixed properly. During a sudden stop or a collision, looseequipment could strike someone.
Always store jack and tools in the
respective storage compartments
and secure them by fixing.
Damaged wheel placed in the load
compartment must always be
secured with the strap.
Stowing a damaged full size
wheel in the load compartment,
Sports Tourer
All permitted wheel sizes can be
stowed in the spare wheel well. To
secure the wheel:
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Vehicle care263
1.Remove centre cap with the brand
emblem by pushing from the
inside.
2. Position the wheel outside down in the wheel well.
3. Secure the defective wheel with the wing nut.
4. Depending on the tyre size, the floor cover can be placed on the
projecting wheel.
Spare wheel with directional tyre
The following applies to tyres fitted
opposing the rolling direction:
● Driveability may be affected. Have the defective tyre renewed
or repaired as soon as possible
and fit it instead of the spare
wheel.
● Drive particularly carefully on wet
and snow-covered road
surfaces.Jump starting
A vehicle with a discharged vehicle
battery can be started using jump
leads and the vehicle battery of
another vehicle.
Do not start with quick charger.
The vehicle battery is located in the
load compartment under a cover.
There are connecting points for jump
starting in the engine compartment.9 Warning
Be extremely careful when starting
with jump leads. Any deviation
from the following instructions can
lead to injuries or damage caused
by battery explosion or damage to the electrical systems of both
vehicles.
9 Warning
Avoid contact of the battery with
eyes, skin, fabrics and painted
surfaces. The fluid contains