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Vehicle care2159Warning
Allow the engine to cool before
opening the cap. Carefully open
the cap, relieving the pressure
slowly.
To top up, use a 1:1 mixture of
released coolant concentrate mixed
with clean tap water. If no coolant
concentrate is available, use clean
tap water. Install the cap tightly. Have
the 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.
The washer fluid level has to be
underneath the MAX mark.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
Washer fluid 3 254.
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.
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216Vehicle care
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 3 254.
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.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
four weeks can lead to battery
discharge. Disconnect the clamp from the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
Battery discharge protection 3 129.
Replacing the vehicle battery Notice
Any deviation from the instructions
given in this section may lead to
temporary deactivation or
disturbance of the stop-start system.
When the vehicle battery is being
replaced, please ensure that there
are no open ventilation holes in the
vicinity of the positive terminal. If a
ventilation hole is open in this area, it
must be closed off with a dummy cap,
and the ventilation in the vicinity of the negative terminal must be opened.
Ensure that the battery is always
replaced by the same type of battery.
The vehicle battery has to be
replaced by a workshop.
Stop-start system 3 147.
Charging the vehicle battery9 Warning
On vehicles with stop-start
system, ensure that the charging potential does not exceed 14.6 V
when using a battery charger.
Otherwise the vehicle battery may be damaged.
Jump starting 3 242.
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Vehicle care217Discharge protection
Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
When the vehicle is being driven, the
load reduction function temporarily
deactivates certain functions, e.g. the heated rear window.
The deactivated functions are
reactivated automatically as soon as
conditions permit.
Idle boost
If charging of the vehicle battery is
required due to battery condition, the
power output of the generator must be increased. This will be achieved by an idle boost which may be audible.
A message appears in the Driver
Information Centre.
Power outlet
The power outlets are deactivated in
the event of low vehicle battery
voltage.Warning label
Meaning of symbols:
● No sparks, naked flames or smoking.
● Always shield eyes. Explosive gases can cause blindness or
injury.
● Keep the vehicle battery out of reach of children.
● The vehicle battery contains sulphuric acid which could cause
blindness or serious burn
injuries.
● See the Owner's Manual for further information.
● Explosive gas may be present in the vicinity of the vehicle battery.
Power saving mode This mode deactivates electrical
consumers to avoid excessive
discharging of the vehicle battery.
These consumers, such as the
infotainment system, windscreen
wipers, low beam headlights,
courtesy light, etc. can be used for a
total maximum time of about
40 minutes after ignition is switched
off.
Changing into power saving mode
When power saving mode is
activated, a message appears in the
Driver Information Centre indicating
Power saving mode .
An active telephone call using the
hands-free option will be maintained
for around 10 minutes longer.
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218Vehicle careDeactivating power saving modePower saving mode is deactivatedautomatically when the engine is
restarted. Run the engine for a
sufficient charge:
● for less than 10 minutes to use the consumers for approx.
5 minutes
● for more than 10 minutes to use the consumers for up to approx.
30 minutes
Diesel fuel system bleeding If the tank has been run dry, the diesel
fuel system must be bled. Switch on
the ignition three times for
15 seconds at a time. Then crank the
engine for a maximum of
40 seconds. Repeat this process after
no less than five seconds. If the
engine fails to start, seek the
assistance of a workshop.Wiper blade replacement
Windscreen
Switch off the ignition.
Within one minute after switching off
the ignition, operate the wiper lever to positon the wiper blades vertically on
the windscreen.
Lift the wiper arm until it stays in the
raised position, press button to
disengage the wiper blade and
remove.
Attach the wiper blade to the wiper
arm and push until it engages.
Lower the wiper arm carefully.
Rear window
Lift the wiper arm. Disengage the
wiper blade as shown in the
illustration and remove.
Attach the wiper blade slightly angled
to the wiper arm and push until it
engages.
Lower the wiper arm carefully.
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Vehicle care219Bulb replacement
Switch off the ignition and switch off
the relevant switch or close the doors.
Only hold a new bulb at the base. Do
not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Replace headlight bulbs from within
the engine compartment.
Bulb check After a bulb replacement switch on
the ignition, operate and check the
lights.
Halogen headlights Halogen headlights with separate
bulbs for low beam and high beam.
Low beam ( 1) outer bulb
High beam ( 2) inner bulb
Low beam (1)
1. Remove the protective cover by pulling the tab.
2.Withdraw the bulb socket from the
reflector housing.
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220Vehicle care3. Detach the bulb from the bulbsocket and replace the bulb.
4. Insert the bulb socket into the reflector housing.
5. Fit the cap on.
High beam (2)
1. Remove the protective cover by pulling.
2.Disengage the spring clip from the
retainer by moving it to the
righthand side. Swivel the spring
clip downwards.
Withdraw the bulb holder from the reflector housing.3. Detach the bulb from the bulb socket and replace the bulb.
4. Insert the bulb socket into the reflector housing.
5. Fit the cap on.
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Vehicle care221Sidelight / daytime running light
with bulbs
1. Rotate the bulb socket anticlockwise to disengage and
withdraw from the reflector.
2. Remove the bulb from the socket by pulling.
3. Replace and insert the new bulb into the socket.
4. Insert the bulb socket into the headlamp housing and turn
clockwise.
Sidelight / daytime running light
with LEDs
In case of defective LEDs, have them replaced by a workshop.
LED headlights Daytime running lights are designedas LEDs and can not be changed.
Have lights repaired by a workshop in
case of failure.
Front fog lights
1. Wrap a cloth around the tip of a flat
screwdriver to prevent paint
damage. Insert the screwdriver in
the recess at the edge of the
cover. Release the cover by
levering it out carefully.
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222Vehicle care
2. Unscrew and remove the twoscrews and remove the lightassembly to the front.
3. Turn the bulb socket anticlockwise and remove it from
the light assembly.
4. Disengage the plug connector by pulling the retaining lug.
5. Remove and replace the bulb unit
and attach the plug connector.
Note that the bulb and the socket
are one unit and have to be
changed together.
6. Insert the bulb socket into the light
assembly by turning clockwise
and engage.
7. Mount the light assembly by tightening the two screws.
8. Attach and engage the cover.
Front turn lights
1. Rotate the bulb socket anticlockwise to disengage and
withdraw from the reflector.