Page 144 of 237

142Driving and operatingPress button on end of wiper lever
repeatedly until the 'AdBlue
percentage remaining' menu is
displayed.
Level warnings
The AdBlue consumption is approx.
3.0 litres per 1000 km and depends on the driving behaviour.
If the AdBlue level falls below a
certain value, a level warning will be
displayed in the Driver Information
Centre 3 102. Additionally, control
indicator Y illuminates continuously
together with a warning chime.
Refill the AdBlue tank as soon as
possible. Refer to "Refilling AdBlue"
below.
If AdBlue is not refilled within a certain distance, further level warnings are
displayed in the Driver Information
Centre depending on the current
AdBlue level.
Engine restarts prevented
Subsequent requests to refill AdBlue
and finally the announcement that an
engine restart will be prevented are
displayed in the Driver Information
Centre.
Note
These restrictions are a legal
requirement.
Before the prevention of an engine restart, a warning message with
0 km is displayed in the Driver
Information Centre, indicating that
after switching off the ignition an
engine restart will be prohibited.
After the prevention of an engine
start, a warning message is displayed in the Driver Information Centre
reminding the driver that AdBlue level is insufficient.To allow the engine to be restarted,
the tank should be refilled completely
or with a volume of at least ten litres
of AdBlue, depending on AdBlue
consumption.
Warning stages: level warnings,
engine restarts prevented
1. Y illuminates after ignition is
switched on with warning
message LEVEL ADBLUE LOW :
Driving is possible without any
restrictions.
Refill the AdBlue tank as soon as
possible.
2. Y illuminates during driving with
warning message TOP UP
ADBLUE :
Possible loss of engine power.
Refill the AdBlue tank as soon as
possible.
3. Y illuminates during driving with
warning message XXX KM STOP
ADD ADBLUE :
Vehicle speed may be limited to
20 km/h after switching the engine
off and on again until the range is
reduced to 0 km.
Page 150 of 237

148Driving and operatingdriving, there is a fault in the ABS.
Control indicator F 3 98 may also
illuminate in the instrument cluster together with a corresponding
message in the Driver Information
Centre. The brake system remains
operational but without ABS
regulation.9 Warning
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS are no longer available. During
hard braking, the vehicle can no longer be steered and may
swerve.
If control indicators u, F , R 3 98
and C 3 98 illuminate, there is a fault
in the braking system. A
corresponding message also
appears in the Driver Information
Centre 3 102. Have the cause of the
fault remedied by a workshop.
Vehicle messages 3 103.
Parking brake9 Warning
Always apply parking brake firmly
without operating the release
button, and apply as firmly as
possible on a downhill or uphill
slope.
To release the parking brake, pull
the lever up slightly, press the
release button and fully lower the
lever.
To reduce the operating forces of
the parking brake, depress the
brake pedal at the same time.
Control indicator R 3 98.
Parking 3 139.
Brake assist If the brake pedal is depressed
quickly and forcefully, maximum
brake force is automatically applied
(full braking).
Maintain steady pressure on the
brake pedal for as long as full braking is required. Maximum brake force is
automatically reduced when the
brake pedal is released.
Brake assist is not available during an
Autostop.
Stop-start system 3 136.
Hill start assist
The system helps prevent unintended movement when driving away on
inclines.
When releasing the brake pedal after
stopping on an incline (with the
selector lever in a forward gear or
reverse gear), the brakes remain on
Page 176 of 237
174Vehicle careWith power button
● Insert the electronic key in thecard reader.
● Press START/STOP without
pressing any of the pedals.
● Wait a few minutes before starting engine.
Power button 3 132.
If the engine fails to start, seek the
assistance of a workshop.
Starting the engine 3 134.
Wiper blade replacement
Wiper blades on the windscreen
Before replacing the wiper blades,
move the wiper lever to the
maintenance position (if equipped).
Windscreen wiper/washer 3 86.
Lift the wiper arm, press button to
disengage the wiper blade and
remove.
Attach new wiper blade slightly
angled to the wiper arm and push until
it engages.
Lower wiper arm carefully.
Wiper blade on the rear window
Lift wiper arm, press retaining lugs
together to disengage the wiper blade
and raise to remove.
Lower wiper arm carefully.
When attaching new wiper blade,
ensure it is engaged securely.
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