Page 113 of 261

Lighting111The lights operate automatically
when the ignition is switched on.
If the vehicle is equipped with the
automatic light control function, the
system switches between daytime running lights and headlights
automatically depending on the
lighting conditions. Automatic light
control 3 108.
Adaptive forward lighting
Cornering light
Depending on the steering angle,
vehicle speed and gear selected
when cornering, an additional light
will illuminate the corner of the road
on the respective side when the
headlights are switched on.
The cornering light is switched off
automatically after prolonged use and at vehicle speeds above 40 km/h.Hazard warning flashers
Operated by pressing ¨.
In the event of hard braking, the
hazard warning flashers may turn on automatically. Switch off by pressing
¨ .
Turn and lane-change
signalslever up:right turn signallever down:left turn signal
When the steering wheel is turned
back, the lever automatically returns
to its original position and the
indicator is deactivated. This will not happen when making a minor
steering manoeuvre such as lane
changing.
For three flashes, e.g. when changing lanes, move lever part way to first
stop. When released, lever will spring
back.
Page 114 of 261
112LightingIf the lever is moved past the first stop,the indicator is switched on
constantly. Switch the indicator off
manually by moving the lever to its
original position.
Front fog lights
Turn inner switch to position >
and
release.
Front fog lights operate with engine
running and headlights switched on.
Rear fog lights
Turn inner switch to position ø and
release.
Rear fog lights operate with engine
running and headlights switched on.
Reversing lights
The reversing lights come on when
the ignition is on and reverse gear is
selected.
Misted light covers
The inside of the light covers may mist up briefly in poor, wet and cold
weather conditions, in heavy rain or
after washing. The mist disappears
quickly by itself; to help, switch on the
headlights.
Page 115 of 261

Lighting113Interior lighting
Interior lights
Courtesy lights illuminate when the vehicle is unlocked with the remote
control or the front doors are opened.
When the doors are closed, the
courtesy light extinguishes after a
delay or immediately after the ignition
is switched on.
Front courtesy light
With the switch in its central position,
the light functions as a courtesy light.Operated by pressing the switch c:
● on constantly
● on when the doors are unlocked and opened
● off constantly
Rear courtesy lights
Combi, Bus
Low level and overhead courtesy
lights are located in the rear
passenger compartment.
Operate rocker switch on the
instrument panel:
press OFF:offpress c:onReading lights l 3 114.
Load compartment lighting Load compartment lighting can be setto illuminate when the side and rear
doors are opened, or switched on
constantly.
With the switch in its central position,
the light functions as a courtesy light.
Operated by pressing the switch c:
● on constantly
● on when the doors are unlocked and opened
● off constantly
Page 116 of 261
114LightingWhen the doors are closed, the
courtesy light extinguishes after a
delay or immediately after the ignition
is switched on.
Reading lights Front reading light
Operated with l.
The reading light can be directed as
required, depending on version.
Rear reading lights
Combi, Bus
Operate rocker switch on the
instrument panel:
press l:onpress OFF:off
Courtesy lights c 3 113.
Each reading light can then be
switched on or off individually and
directed as required.
Page 117 of 261
Lighting115Lighting features
Exit lighting
Headlights come on for approx.
30 seconds after the vehicle is parked
and the system is activated.
Activating 1. Switch off ignition.
2. Remove ignition key.
3. Pull turn signal lever towards steering wheel.
This action can be repeated up to
four times.
The headlights are turned off immediately by turning the light switch
to any position and returning to 7.
Battery discharge protection To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights may be
switched off automatically after some
time.
Page 138 of 261

136Driving and operatingIdle speed control
To increase the idle speed press the
switch. After a few seconds the
function will be activated.
The function will be deactivated
when:
● The clutch pedal is depressed.
● The accelerator pedal is depressed.
● MTA is not in N (neutral).
● Vehicle speed is above 0 km/h. ● Control indicator A, W or C
illuminate in the instrument
cluster.
To increase or decrease the fast idle
speed rate, consult a workshop.
Note
When the fast idle function is
activated, the stop-start system is
automatically deactivated.
Stop-start system 3 136.
Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but accelerator pedal is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.
Stop-start system The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam.It restarts the engine automatically as
soon as the clutch pedal is depressed (manual transmission) or the brake
pedal is released (manual
transmission automated).
A vehicle battery sensor ensures that
an Autostop is only performed if the vehicle battery is sufficiently charged
for a restart.
Activation
The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.
If the below conditions are not
fulfilled, an Autostop is prohibited and
control indicator \ illuminates in the
instrument cluster 3 100.
Page 143 of 261

Driving and operating141Caution
Ensure there is adequate
clearance and that there are no
obstructions when adjusting the
suspension height.
The remote control unit is magnetic
and may be fixed to any metal part of the vehicle or stored in its holder.
With the engine running, press the appropriate button for two seconds to
adjust the suspension height.
Indicator light will flash intermittently
while height adjustment is in progress
and illuminates when complete.
If the ignition is switched on with
engine not running, the suspension
height can only be lowered.
Note
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Pre-programmed settings
Adjusts the suspension height to one
of three pre-programmed positions.
l:lowered positionk:normal positionj:raised positionCaution
If an obstacle is detected while
raising or lowering, the
suspension height is returned to the normal position after a delay.
This does not guarantee damage- free operation. Ensuring sufficient
clearance and freedom from
obstacles is the responsibility of the driver.
Manual settings
Manual adjustment can only be
performed when the vehicle is
stationary.
Select by pressing h for
two seconds , then R to raise, or S to
lower.
To exit, press any of the pre-
programmed buttons.
Note
Obstacle detection is not available
during manual adjustment.
When a certain low speed is
exceeded or when the ignition is
switched off, height adjustment is deactivated automatically and the
suspension height is returned to the
normal position.
Service modeWhen the vehicle is stationary, press
i for five seconds to put the vehicle
into service mode. The indicator light
will illuminate.
When service mode has been
activated, the air suspension master
switch must be turned off.
To exit service mode, press i again
for five seconds.
Fault
If a fault is detected, i will flash
intermittently. If service mode has been activated and there is a fault, h,
S and R will flash simultaneously.
Have the cause of the fault remedied
by a workshop.
Page 145 of 261

Driving and operating143Malfunction indicator light 3 97.
AdBlue
General information The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust
system.
The designation of this fluid is
AdBlue ®
. It is a non-toxic, non-
flammable, colourless and odourless
fluid which consists of 32% urea and
68% water.9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue pre-heater,
the emissions reduction at low
temperatures is ensured. The AdBlue
pre-heater works automatically.
AdBlue gauge
In versions without AdBlue level
warnings in the Driver Information
Centre, an AdBlue gauge is present,
which shows the current AdBlue fluid
level remaining in the tank.
AdBlue gauge 3 91.
Level warnings
The AdBlue consumption is approx.
3.5 litres per 1000 km and depends
on the driving behaviour.
Version with level warnings in the
Driver Information Centre
If the AdBlue level falls below a
certain value, a level warning will be
displayed in the Driver Information
Centre 3 102.