
Handbrake - automatic transmission38 Brake pedal (automatic transmission)38
Turn signal system
38
Cruise control system
38
Main beam
38
/ Safety belt (belt status display) - rear seat
38
City Safe Drive
39
/
START-STOP
39
The warning lights indicate certain functions or faults.
The lighting up of some warning lights may be accompanied by acoustic sig-
nals.
After switching on the ignition, some warning lights light up briefly as a func-
tion test.
If the tested systems are OK, the corresponding warning lights extinguishes
for a few seconds after switching on the ignition or after starting the engine.
WARNING■ Ignoring light-up indicator lamps in the instrument cluster and the control
symbols in the display may cause serious injury or damage to the vehicle.■
If you have to stop for technical reasons, then park the vehicle at a safe
distance from the traffic, switch off the engine and activate the hazard
warning light system » page 50. The warning triangle is set up at the pre-
scribed distance - observe the national legal provisions when doing so.
■
The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 107, Engine compartment .
Handbrake
Read and observe
on page 34 first.
The warning light
illuminates if the handbrake is applied. An audible warn-
ing is also given if you drive the vehicle for at least 3 seconds at a speed of
more than 6 km/h.
Braking system
Read and observe
on page 34 first.
The indicator light
illuminates if the brake fluid level in the braking system
is too low or there is a fault in the ABS.
›
Stop the vehicle, switch off the engine, and check the level of the brake flu-
id » page 113 » .
WARNING■
If the warning light illuminates together with the warning light
» page 37 , Antilock brake system (ABS) , stop driving! Seek help
from a specialist garage.■
A fault to the ABS system or the braking system can increase the vehi-
cle's braking distance – risk of accident!
Seat belt warning light
Read and observe
on page 34 first.
The warning light
illuminates as a reminder for the driver and front passen-
ger to fasten seat belts.
The indicator light
goes off after the respective seat belt has been fastened.
If the driver or front passenger has not fastened their seat belt and the vehicle
speed is more than 20 km/h, the warning light
flashes and you will hear an
acoustic signal.
The warning signal is switched off and the indicator light is
permanently il-
luminated if the driver and front passenger have not fastened their seat belts
within the next 90 seconds.
Further information » page 11, Seat belts .
Alternator
Read and observe
on page 34 first.
The warning light
illuminates when the engine is running but the vehicle
battery is not charging.
Seek assistance from a specialist garage immediately.
34Using the system

CAUTIONIf in addition to the symbol the symbol » page 35 illuminates while driv-
ing, stop driving - risk of engine damage! Switch off the engine and seek as-
sistance from a specialist garage.
Engine oil
Read and observe
on page 34 first.
When the warning light is
illuminated or is flashing , the engine oil pressure
is too low.
An audible signal sounds as a warning.
›
Stop the vehicle and switch the engine off if the warning light does not ex-
tinguish or if it begins to flash while you are driving.
›
Check the oil level and top up with engine oil if necessary
» page 110, Check-
ing the oil level .
If the oil level is within the specified range and the warning light illuminates
or blinks again after the engine is started, do not continue driving! Switch
off the engine and seek assistance from a specialist garage.
CAUTION
■ The red oil pressure light is not an oil level indicator! One should there-
fore check the oil level at regular intervals, preferably after every refuelling
stop.■
Stop driving if for some reason it is not possible to top up the engine oil
under the current conditions. Switch off the engine and seek assistance from a
specialist garage.
Coolant
Read and observe
on page 34 first.
If the warning light
illuminates or flashes , either the coolant temperature is
too high or the coolant level is too low.
An audible signal sounds as a warning tone.
›
Stop the vehicle, switch off the engine, and check the coolant lev-
el » page 112 , Checking the coolant level .
›
If the coolant level is too low, add coolant to the reservoir » page 112.
Do not continue if for some reason it is not possible to fill with coolant under
the current circumstances! This can cause serious engine damage. Therefore,
switch the engine off and seek help from a specialist garage.
If the coolant is within the specified range, the increased temperature may be
caused by an operating problem at the radiator fan.›
Switch off the ignition.
›
Check the fuse for the radiator fan, replace if necessary » page 137, Fuses in
the engine compartment .
If the coolant level and fan fuse are OK and the warning light
illuminates
again after switching on the ignition,
stop driving!
Seek help from a specialist garage.
WARNING■ Carefully open the coolant expansion bottle. If the engine is hot, the cool-
ing system is pressurized – risk of scalding! It is therefore best to allow the
engine to cool down before removing the cap.■
Do not touch the radiator fan. The radiator fan may switch itself on auto-
matically even if the ignition is off - a danger of injury is present!
CAUTION
■ Additional headlights and other attached components in front of the air inlet
impair the cooling efficiency of the coolant.■
Never cover the radiator - there is a risk of the engine overheating.
Automated transmission
Read and observe
on page 34 first.
Warning light
If the warning light
illuminates and a beep sounds, then there is a fault to
the automated transmission.
Do not drive the vehicle! Switch off the engine
and seek assistance from a specialist garage.
Warning light
If the warning light
illuminates and no gear change is possible, there may
be technical reasons for why the functionality of the automatic transmission is
limited.
›
Stop the car, turn the ignition off and on again.
35Instruments and control lights

If the warning light illuminates after you switch on the ignition, seek assis-
tance from a specialist garage.
If the warning light
or also the warning light
illuminates and an acoustic
signal sounds, this means that the automatic gearbox has overheated.›
Stop and allow the transmission to cool down or drive more quickly than
20 km/h (12 mph).
If the warning light
illuminates repeatedly , park the vehicle, shut off the en-
gine and allow the gearbox to cool down.
Further information » page 80, Automated transmission .
Power steering
Read and observe
on page 34 first.
If the warning light
or
illuminates while driving or after switching on the
ignition does not extinguish, there is an error in the electromechanical power
steering.
If the indicator light
illuminates, this indicates a
complete failure of the
power steering and the steering assist has failed (significantly higher steering
forces).
If the indicator light
illuminates, this indicates a
partial failure of the power
steering and the steering forces can be greater.
›
Stop the car, turn the ignition off and on again.
If the indicator light does not illuminate after the engine has been turned on
again, the power steering is fully operational again.
If the warning light illuminates again, then immediately obtain assistance from
an authorised dealer.
Note
If the vehicle's battery has been disconnected and reconnected, the warning
light illuminates after switching on the ignition. If the warning light does
not extinguish after moving a short distance, this means there is an error in
the system. Seek assistance from a specialist garage immediately. Electronic Stability Control (ESC)
Read and observe
on page 34 first.
The warning light
flashes to show that the ESC is currently operating.
If the warning light
illuminates , there is a fault in the ESC. Seek assistance
from a specialist garage immediately.
As the ESC operates in conjunction with the ABS, the ESC warning light will al-
so come on if the ABS system fails.
If the warning light
illuminates immediately after you start the engine, the
ESC might be switched off due to technical reasons.
›
Switch the ignition off and on again.
If the indicator light
does not illuminate after you switch the engine back
on, the ESC is fully functional again.
Further information » page 84, Electronic Stability Control (ESC) .
Note
If the vehicle's battery has been disconnected and reconnected, the warning
light illuminates after switching on the ignition. If the warning light does
not extinguish after moving a short distance, this means there is an error in
the system. Seek assistance from a specialist garage immediately.
Traction Control System (TCS)
Read and observe
on page 34 first.
The warning light
flashes it shows that the TCS currently operating.
If the warning light
illuminates permanently, there is a fault in the TCS.
Seek assistance from a specialist garage immediately.
The fact that the TCS operates together with the ABS means that the TCS
warning light will also come on if the ABS system is not operating properly.
If the warning light
illuminates immediately after you start the engine, the
TCS might be switched off due to technical reasons.
›
Switch the ignition off and on again.
If the warning light
does not illuminate after you switch the engine back
on, the TCS is fully functional again.
Further information » page 85, Traction Control System (TC) .
36Using the system

NoteIf the vehicle's battery has been disconnected and reconnected, the warning
light illuminates after switching on the ignition. If the warning light does
not extinguish after moving a short distance, this means there is an error in
the system. Seek assistance from a specialist garage immediately.
Antilock brake system (ABS)
Read and observe
on page 34 first.
If the warning light
is illuminated , there is a fault in the ABS.
The vehicle will only be braked by the normal brake system without the ABS.
Seek assistance from a specialist garage immediately.
In the event of an ABS fault, the other braking and stabilization systems are
turned off » page 84, Braking and stabilisation systems .
WARNING■
A fault to the ABS system or the braking system can increase the vehi-
cle's braking distance – risk of accident!■
If the ABS warning light
together with the indicator light
» page 34
lights,
do not continue to drive! Seek help from a specialist garage.
Tyre pressure
Read and observe
on page 34 first.
The warning light
is illuminated
If the warning light
illuminates while driving, it means one of the tyres has
undergone a pressure change.
An audible signal sounds as a warning.
›
Immediately reduce speed and avoid sudden steering and braking manoeu-
vres.
›
Stop the vehicle, turn the ignition off and check the tyres and their inflation
pressures » page 118 .
›
Correct the tyre pressure if necessary or replace the affected
wheel » page 124 or use the repair kit » page 127.
›
Save the tyre pressure values in the system » page 92.
The indicator light flashes for about 1 min. and remains illuminated
If the warning light flashes for approximately 1 minute and stays illumina-
ted, there may be a fault in the tyre pressure monitoring system.›
Stop the vehicle, turn the ignition off and start the engine again.
If the warning light
flashes again after the engine has started, there is a
system error.
Seek help from a specialist garage.
The following reasons can explain the warning light
being illuminated.
› The vehicle is loaded on one side. Distribute loads as evenly as possible.
› The wheels of one axle are loaded more heavily (e.g. when towing a trailer or
when driving uphill or downhill).
› Snow chains are mounted.
› A wheel has been changed.
Save the tyre pressure values in the system » page 92.
CAUTION
Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the warning light in the instrument cluster can be delayed or does
not light up at all.
Note
If the vehicle's battery has been disconnected and reconnected, the warning
light illuminates after switching on the ignition. If the indicator light does
not extinguish after moving a short distance, this means that there is an error
in the system. Seek help from a specialist garage.
Rear fog light
Read and observe
on page 34 first.
The warning light
illuminates when the rear fog light is switched on.
Exhaust inspection system
Read and observe
on page 34 first.
If the warning light
illuminates , there is a fault in the exhaust inspection
system. The system allows the vehicle to run in emergency mode.
Seek assistance from a specialist garage immediately.
37Instruments and control lights

Engine performance checkRead and observe
on page 34 first.
If the indicator light
illuminates , there is a fault in the engine control. The
system allows the vehicle to run in emergency mode.
Seek assistance from a specialist garage immediately.
Airbag system
Read and observe
on page 34 first.
Monitoring the airbag system
If the warning light does not go out for some seconds after the ignition has
been switched on or illuminates while you are driving, there is a fault in the
system »
. This also applies if the warning light does not come on when the
ignition is switched on.
The operational capability of the airbag system is monitored electronically, in-
cluding when one of the airbags is switched off.
One of the airbags or a belt tensioner has been disabled by the diagnostic
tool
› The warning light
illuminates for approx. 4 seconds after switching on the
ignition and then flashes again for approx. 12 seconds afterwards.
The front passenger airbag has been disabled with the key switch
› The warning light
illuminates for a few seconds when the ignition is
switched on;
› The deactivated airbag is indicated by the illumination of the warning light
in the middle of the dash panel
» page 18, Deactivating
the front passenger airbag .
WARNINGWhen a fault in the airbag system occurs, there is a risk of the system not
being triggered in the event of an accident. Therefore, this must be
checked immediately by a specialized garage.
Handbrake - automatic transmission
Read and observe
on page 34 first.
If the warning light
illuminates or blinks, engage the handbrake.
Further information » page 80, Automated transmission .
Brake pedal (automatic transmission)
Read and observe
on page 34 first.
If the warning light
illuminates , operate the brake pedal.
Further information » page 80, Automated transmission .
Turn signal system
Read and observe
on page 34 first.
Either the left or right
indicator light
flashes depending on the position of
the control lever.
If there is a fault in the turn signal system, the warning light flashes at twice
its normal rate.
Switching off the hazard warning light system is switched on will cause all of
the turn signal lights as well as both warning lights to flash.
Cruise control system
Read and observe
on page 34 first.
The warning light
illuminates when the cruise control is active.
Main beam
Read and observe
on page 34 first.
The warning light
illuminates when the main beam or the headlight flasher
is operated.
/ Safety belt (belt status display) - rear seat
Read and observe
on page 34 first.
After switching on the ignition, illumination takes place in the display of the
instrument cluster for 30 s of the symbols or
.
38Using the system

The control symbols or indicate whether any passengers have put on their
seat belts in the rear seats.
The passenger on the associated rear seat is belted.
The passenger on the associated back seat is not wearing a seat belt.
If a seat belt is unfastened on the rear seat during the journey at a speed of
more than 25 km/h, an acoustic signal will sound, and the belt status indicator
for the rear seats
flashes for around 30 seconds.
Further information » page 11, Seat belts .
City Safe Drive
Read and observe
on page 34 first.
If the indicator symbol
flashes rapidly, the City Safe Drive system brakes the
car brakes automatically straight away.
If the indicator symbol
flashes slowly , the system is not available or there is
a system malfunction.
If the system is turned off and the vehicle is moving at a speed of about 5-30
km/h, illumination occurs on the display of the instrument cluster of he warn-
ing symbol .
If the system is activated again, the warning light
in the instrument clus-
ter display illuminates for about 5 s .
Further information » page 90, City Safe Drive .
/ START-STOP
Read and observe
on page 34 first.
A glowing indicator symbol
shows the START-STOP system is active.
A glowing indicator symbol
shows the START-STOP system is active, but no
automatic engine cut-off is possible.
A flashing indicator symbol
shows the START-STOP system is not available.
Further information » page 88, START-STOP .
Unlocking and opening
Unlocking and locking
Introduction
This chapter contains information on the following subjects:
Unlock / lock using key and lock
40
Unlocking / locking with the remote control key
41
Opening/closing a door
41
Door opening lever
42
Safe securing system
42
Locking / unlocking the vehicle with the central locking button
43
Child safety lock
43
The central locking system allows you to lock and unlock all doors and the lug-
gage compartment lid at the same time » page 44.
The safe securing system » page 42 is integrated in the central locking sys-
tem. Once the car is locked from the outside, the door locks 1)
are automatically
blocked by the safe securing system »
.
The following is true after unlocking
› All the doors and the boot lid are unlocked.
› The interior light operated via the door contact illuminates.
› The safe securing system is switched off 1)
.
› The indicator light in the driver door stops flashing.
The following is true after locking
› All the doors and the luggage compartment lid are locked.
› The interior light operated via the door contact goes out.
› The safe securing system is switched on 1)
.
› The warning light in the driver door begins flashing.
Fault display
If the warning light in the driver's door initially flashes quickly for around 2 sec-
onds, and then illuminates for 30 seconds without interruption before flashing
again slowly, you will need to seek the assistance of a specialist garage.
1)
This function only applies to certain countries.
39Unlocking and opening

Automatic locking and unlocking
All the doors and the luggage compartment lid are locked automatically once
the car reaches a speed of about 15 km/h.
If the ignition key is withdrawn, the car is then automatically unlocked again. It
is also possible for the driver to unlock the car by pressing the central locking
button.
The vehicle doors can be unlocked and opened at any time by pulling once on
the door opening lever.
Failure of the central locking
If the central locking system fails only the driver's door can be unlocked or
locked with the key. The other doors and the boot lid can be emergency locked
or unlocked.
› Emergency locking of the door
» page 133.
› Emergency unlocking of the luggage compartment lid
» page 134.WARNING■
Never leave the key in the vehicle when you exit the vehicle. Unauthor-
ized persons, such as children, for example, could lock the car, turn on the
ignition or start the engine - there is a danger of injury and accidents!■
When leaving the vehicle, never leave persons who are not completely in-
dependent, such as children, unattended in the vehicle. The children might,
for example, release the handbrake or take the vehicle out of gear. The ve-
hicle could then start to move – risk of injury and accidents! These individu-
als might also not be able to leave the vehicle on their own or to help
themselves. Can be fatal at very high or very low temperatures!
■
If the car is locked from the outside and the safelock system is switched
on, there must not be any person in the car as it is then not possible to
open either a door or a window from the inside. The locked doors make it
more difficult for rescuers to get into the vehicle in an emergency – risk to
life.
CAUTION
■ Each key contains electronic components; therefore it must be protected
against moisture and severe shocks.■
Keep the groove of the keys absolutely clean. Impurities (textile fibres, dust,
etc.) have a negative effect on the functionality of the locking cylinder and ig-
nition lock.
■
The battery must be replaced if the central locking does react to the remote
control at less than around 3 metres away » page 133.
■
When leaving the vehicle, always check if it is locked.■If the driver's door has been opened, the vehicle cannot be locked.
Note
In the event of an accident in which the airbags are deployed, the locked doors
are automatically unlocked in order to enable rescuers to gain access to the
vehicle.
Unlock / lock using key and lock
Fig. 24
Left side of the vehicle: Turning
the key for unlocking and locking
the vehicle
Read and observe and on page 40 first.
The key allows you to unlock and lock the vehicle via the lock cylinder in the driver's door.
Unlocking / locking the vehicle with the key » Fig. 24
Unlocking the vehicle
Locking the vehicle
40Using the system

Visibility
Introduction
This chapter contains information on the following subjects:
Rear window heater
52
Sun visors
52
Rear window heater
Fig. 40
Button for rear window heater
Button for the heating in the centre console » Fig. 40
Switching the rear window heater on/off
When the heater is switched on, a lamp illuminates inside the button.
The heating only works when the engine is running.
The heater automatically switches off after approximately 10 minutes.
For the sake of the environment
The heating should be switched off as soon as the window is de-iced or free
from mist. The reduced current consumption will have a favourable effect on
fuel economy.
Note
If the on-board voltage drops, the heater switches off automatically, in order
to provide sufficient electrical energy for the engine control » page 116, Auto-
matic load deactivation .Sun visorsFig. 41
Sun visor: Driver's side/front passenger's side
Sun visors » Fig. 41
Fold down the cover
Swivel cover towards the door
Tape for storage of small light objects
Make-up mirrors
Note
A make-up mirror can also be installed in the driver's sun visor.
Windscreen wipers and washers
Introduction
This chapter contains information on the following subjects:
Operate wiper and washer
53
The wiper and washer system provide a good view through the windscreen or
rear window.
The windscreen wipers and the windscreen washer system only operate if the
ignition is switched on.
Top up with windscreen wiper fluid » page 109.
12AB52Using the system