Page 172 of 248
166 Self-help, vehicle care
Picture no: 17883s.tif
Pull the safety catch and open the bonnet.
Any dirt or snow on the bonnet can slide
down toward the windscreen when the
bonnet is opened and block the air intake
3127.
Picture no: 14733s.tif
Secure the bonnet support. Before closing
the bonnet, press the support into the
holder.
Lower the bonnet and allow it to drop into
the catch. Check that the bonnet is
engaged.
Starting the engine with jump
leads
3
Do not use a rapid charger or push or two
the vehicle to get it started.
A vehicle with a discha rged battery can be
started using jump leads and the battery of
another vehicle.
9 Warning
Starting the engine with jump leads must
be carried out with the utmost caution.
Any deviation from the following
instruction may lead to injury or damage
due to the explosion of the batteries and
to damage of the electrics in both
vehicles.
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167
Self-help, vehicle care
Picture no: 15286a.tif
zNever expose the battery to naked
flames or sparks.
z A flat battery can fr eeze at temperatures
around 0 C. Defrost the battery before
connecting up jump leads.
z Do not allow battery fluid to come into
contact with eyes, skin, fabrics or
painted surfaces. The fluid contains
sulphuric acid which can cause injuries
and damage in the event of direct
contact.
z Wear eye protection and protective
clothing when handling a battery. z
Use a booster battery with the same
voltage (12 volts). Its capacity (Ah) must
not be much less than that of the
discharged battery.
z Use jump leads with insulated terminals
and a cross section of at least 16 mm
2
(25 mm
2 for diesel engines).
z Do not disconnect the discharged
battery from the vehicle.
z Switch off all unnecessary electrical
consumers.
z Do not lean over the battery during jump
starting.
z Do not allow the terminals of one lead to
touch those of the other lead.
z The vehicles must not come into contact
with each other during the jump starting
process.
z Apply the handbrake. Gear lever in
neutral.
Picture no: 16485s.tif
Lead connection order:
1. Connect the red lead to the positive
terminal 1 of the booster battery.
2. Connect the other red lead to the positive terminal 2 of the discharged
battery.
3. Connect the black lead to the negative terminal 3 of the booster battery.
4. Connect the other end of the black lead 4 to a vehicle grounding point, such
as the engine block or a screw
connection in the engine suspension.
Connect as far away from the
discharged battery as possible.
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169
Self-help, vehicle care
Picture no: 17918s.tif
Screw in the towing eye anticlockwise as far
as it will go until it stops in a horizontal
position.
Attach a tow rope 3 – or better still a tow
rod 3 – to the eye.
The towing eye may only be used for
towing and not for recovery of the vehicle. Switch on ignition to release steering
column lock and to permit operation of
brake lamps, horn an
d windscreen wipers.
Gear lever in neutral.
Picture no: 17897s.tif
When the engine is not running,
considerably more force is needed to brake
and steer.
To prevent the entry of exhaust fumes from
the towing vehicle, switch on the air
recirculation 3 and close the windows.
Contact a workshop for assistance.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can damage
the vehicle.
Page 176 of 248
170 Self-help, vehicle careIf the automatic clutch has been manually
disengaged in vehicles with manual
automated transmission 3 towing is not
permitted 3134. In this case, contact a
workshop for assistance immediately.
After towing, unscrew towing eye by
rotating clockwise and insert and close the
cap.
Picture no: 14199s.tif
Towing another vehicle
Attach a tow rope 3 – or better still a tow
rod 3 – to the rear towing eye on the right
side of the vehicle underbody, but never to
the rear axle.
Picture no: 17898s.tif
On some versions, the towing eye is located
behind a cover.
Slacken the screw a quarter turn with a
screwdriver (see Fig.) and remove the
cover.
The towing eye may only be used for
towing and not for recovery of the vehicle.
After towing, fit cover 3 and secure with
bolt.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can damage the
vehicle.
Page 180 of 248

174 Self-help, vehicle careChanging wheels There may be a tyre repair kit instead of a
spare wheel 3178.
Make the following preparations and
observe the following information:
z Park the vehicle on a level, firm and non-
skid surface. The front wheels must be in
the straight-ahead position.
z Switch on the hazard warning flashers,
apply the hand brake, engage first gear
or reverse.
z Erect warning triangle as specified.
Warning triangle 3171.
z Remove the spare wheel 3 172.
z Never change more than one wheel at
once.
z Use the jack 3 only to change wheels. z
If the ground on which the vehicle is
standing is soft, a solid board (max. 1 cm
thick) should be placed under the jack 3.
z Block the wheel diagonally opposite the
wheel to be changed by placing wedge
blocks or equivalent in front and behind
the wheel. z
No people or animals may be in the
vehicle when it is jacked up.
z Never crawl under a jacked-up vehicle.
z Do not start the vehicle when it is raised
on the jack.
z Before screwing in the wheel bolts, clean
them and lightly coat the taper of each
wheel bolt with comm ercially available
grease.
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177
Self-help, vehicle care
Picture no: 14763s.tif
The edge of the jack base must be
planted firmly and vertically in line with
the contact point.
Raise vehicle by turning crank handle.
If this is not the case, carefully lower the
vehicle immediately and reposition the
jack.
5. Unscrew the wheel bolts.
Picture no: 11647s.tif
If the wheel bolt s have retaining
washers 3, they must not be removed.
6. Change wheel. Notes on spare wheel 3172. Notes on temporary spare wheel
3 173.
7. Screw in the wheel bolts. Push the wheel bolt wrench 3 on as far as possible and
tighten the wheel bolts slightly.
8. Lower vehicle.
9. Push the wheel bolt wrench 3 on as far
as possible and tighten crosswise.
Tightening torque is 110 Nm. 10. Before refitting the wheel trim, clean the
wheel around the retaining clips. Valve
symbol 3 on back of wheel trim must
point towards valve on wheel.
Align and refit wheel trim or wheel bolt
caps 3.
Alloy wheels 3: put hub cap on and
engage, inserting pin on rear of hub
cap into relevant hole in wheel.
Alloy wheels with anti-theft lock 3: Put
hub cap on. Insert and tighten anti-
theft lock 3.
11. Stow removed wheel, tool kit and warning triangle in the luggage
compartment 3171.
12. Check the tyre pressure of the newly mounted wheel.
13. Have the wheel bolt tightening torque (110 Nm) checked.
14. Replace the faulty tyre on the wheel that was removed.
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183
Self-help, vehicle care
No. Circuit4 Infotainment system, diesel engine
5 –
6 –
7 Starter, diesel engine: engine
controller
8 Horn
9 Fuel injection system, fuel pump,
stationary heater
10 Turn signal lamps
11 Infotainment system, Information
display, Infotainment system
12 Heated rear window, exterior
mirrors
13 Central locking, anti-theft alarm
system
14 Engine control
Petrol engine:
Diesel engine:
15 Engine control unit,
Z 17 DTH engine
16 Accessory socket, cigarette lighter No. Circuit
17 –
18 Adaptive Forward Lighting
19 Central locking system
20 Interior lighting, reading lamp
21 Windscreen washer system
22 Rear electric window
23 Tilt/slide sun roof, skylight roof
24 Anti-theft alarm system
25 Rear window wiper
26 Ignition system, engine electronics
27 Engine control, airbag, ESP®
Plus
28 Air conditioning system
29 Front left electric window
30 –
31 Engine control,
Z 17 DTH engine
32 Front right electric window No. Circuit
33 Central control module,
immobiliser, control indicators
34 Windscreen wipers
35 Interior lighting, interior mirror,
information display
36 Brake light, ABS, ESP®
Plus
37Cigarette lighter, auxiliary heater
38 Seat heater (left)
39 Seat heater (right)
40 Adaptive Forward Lighting,
automatic headlamp range
adjustment
41 Reversing lamps
Page 192 of 248
186 Self-help, vehicle care
Picture no: 16086s.tif
Dipped beam
1. Open bonnet and engage support.
2. Rotate the cap anticlockwise and remove.
Picture no: 16087s.tif
3. Press the bulb do wn in the holder.
4. Remove bulb with connector from reflector housing.
Picture no: 16088s.tif
5. Detach plug connector from bulb base.
6. Attach connector to new bulb.
7. Insert the bulb with connector so that the lug engages in the recess in the
reflector.
8. Place headlamp protective cover in position and close.