138LightingThey will switch off automatically after
a delay. This function works only in
the dark. Theatre lighting is activated
if the driver's door is opened during
this time.
Path lighting Headlights, tail lights and number
plate lights illuminate the surrounding
area for an adjustable time after
leaving the vehicle.
ActivatingHalogen headlights
1. Switch off the ignition.
2. Open the driver's door.
3. Pull the turn signal lever.
4. Close the driver's door.
If the driver's door is not closed, the
lights switch off after two minutes.
Exit lighting is switched off
immediately if the turn signal lever is pulled while the driver's door is open.LED headlights
Path lighting is activated, when the
ignistion is switched off and the
driver's door is opened.
This function can be activated or
deactivated in the vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Info-Display.
Info-Display 3 111.
Vehicle personalisation 3 117.
The settings can be saved for the key being used 3 23.
Battery discharge protection
Vehicle battery state of charge
function
The function guarantees longest
vehicle battery life via a generator
with controllable power output and
optimised power distribution.
To prevent discharge of the vehicle
battery when driving, the following
systems are reduced automatically in
two stages and finally switched off:
● auxiliary heater
● heated rear and front window
● heated steering wheel
● heated mirrors
● heated seats
● fan
In the second stage, a message
which confirms the activation of the
vehicle battery discharge protection
will be displayed in the Driver
Information Centre.
140Climate controlClimate controlClimate control systems.............140
Air conditioning system ...........140
Electronic climate control system .................................... 143
Auxiliary heater ........................149
Air vents ..................................... 149
Adjustable air vents .................149
Fixed air vents ......................... 150
Maintenance .............................. 150
Air intake ................................. 150
Air conditioning regular operation ................................ 151
Service .................................... 151Climate control systems
Air conditioning system
Illustration shows functions which
may not be available for your
particular vehicle.
Controls for: ● Fan speed Z
● Temperature TEMP
● Air distribution l, M and K
● Air conditioning A/C
● Demisting and defrosting á
● Air recirculation 4
● External air 5
● Heated rear window and exterior
mirrors b
● Heated windscreen ,
● Heated seats ß
Some changes of settings are
indicated briefly in the Info-Display.
Activated functions are indicated by
the LED in the respective button.
Fan speed Z
Adjust the air flow by turning Z to the
desired speed.to the right:increaseto the left:decrease
Temperature TEMP
Adjust the temperature by turning
TEMP to the desired temperature.
red area:warmerblue area:colder
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Climate control149Basic settingsFollowing settings can be changed in
the Personalisation menu in the
Info-Display:
● fan speed regulation in automatic
mode.
● settings of automatic rear window
heating.
● settings of automatic windscreen
dehumidification
● settings of automatic seat heating
Vehicle personalisation 3 117.
Heated rear window and exterior mirrors b
3 37
Heated windscreen ,
3 38.
Heated seats ß
3 48.
Ventilated seats A
3 49Auxiliary heater
Air heater
Quickheat is an electric auxiliary air
heater which automatically warms up
the passenger compartment more
quickly.Air vents
Adjustable air vents At least one air vent must be open
while cooling is on.
Illustration shows centre air vents in
instrument panel.
158Driving and operating● The driver's door is closed or thedriver's seat belt is fastened.
● The vehicle battery is sufficiently charged and in good condition.
● The engine is warmed up.
● The engine coolant temperature is not too high.
● The engine exhaust temperature is not too high, e.g. after driving
with high engine load.
● The ambient temperature is above -5 °C.
● The climate control system allows an Autostop.
● The brake vacuum is sufficient.
● The self-cleaning function of the diesel particle filter is not active.
● The vehicle was driven at least at
walking speed since the last
Autostop.
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 140.Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 153.
Vehicle battery discharge protection
To ensure reliable engine restarts, several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features e.g. auxiliary electric heater
or heated rear window are disabled or switched to a power saving mode.
The fan speed of the climate control
system is reduced to save power.
Restart of the engine by the driver
Vehicles with manual transmissionConventional restart
All engines have conventional restart.
Depress the clutch pedal without
depressing the brake pedal to restart
the engine.
On engines with late restart a
conventional restart is only possible
without depressed brake pedal.Late restart
All engines have late restart in
addition to conventional restart. Late
restart is only active on gradients up to 5%.
● Depress the brake pedal.
● Depress the clutch pedal.
● Select first gear.
● Release the brake pedal to restart the engine.
Vehicles with automatic transmission
Release the brake pedal or move
selector lever out of D into N or P to
restart the engine.
Restart of the engine by the stop- start system
The selector lever must be in neutral
to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system:
● The stop-start system is manually deactivated.
● The bonnet is opened.
Vehicle care249No.Circuit18Body control module19UREA module20Body control module21Body control module22Body control module23Electric steering wheel lock24Airbag25Diagnostic connector26Power outlet load compartment27EBCM valve28Police provision29–30–31Steering wheel controls32Ignition switch33Climate control34Central gateway moduleNo.Circuit35AUX/USB connector36Wireless charger37Rear wiper38Onstar39Display40Parking assist41Overhead console42RadioVehicle tools
Tools
Vehicles with tyre repair kit
The tools and the towing eye are
located in a box together with the tyre
repair kit below the floor cover in the
load compartment.
Tyre repair kit 3 256.
296IndexAAccessories and vehicle modifications .......................... 229
Active bonnet ................................ 66
Active emergency braking ..........193
Adaptive cruise control .......103, 181
AdBlue ................................ 101, 162
Adjustable air vents ...................149
Airbag and belt tensioners ...........98
Airbag deactivation ................58, 98
Airbag label................................... 53
Airbag system .............................. 53
Air conditioning regular operation ................................ 151
Air conditioning system .............. 140
Air intake .................................... 150
Air vents...................................... 149
All-wheel drive ........................... 170
Antilock brake system ................ 170
Antilock brake system (ABS) .....100
Anti-theft alarm system ................30
Anti-theft locking system .............. 29
Appearance care ........................268
Armrest ................................... 48, 50
Armrest storage ........................... 69
Ashtrays ....................................... 86
Automatic anti-dazzle ..................35
Automatic dimming ......................34
Automatic light control ...............127
Automatic locking ........................27Automatic transmission .............165
Autostop ..................................... 157
Auxiliary heater ........................... 149
B Baselevel display ........................104
Battery discharge protection ......138
Battery voltage ........................... 116
Belts.............................................. 51
BlueInjection ............................... 162
Bonnet ....................................... 231
Brake and clutch fluid .................272
Brake and clutch system .............99
Brake assist ............................... 172
Brake fluid .................................. 234 Brakes ............................... 170, 234
Breakdown.................................. 266
Bulb replacement ....................... 237
C Capacities .................................. 285
Catalytic converter .....................161
Central locking system ................23
Centre console lighting ..............137
Centre console storage ...............69
Changing tyre and wheel size ...255
Charging system .......................... 99
Child locks ................................... 28
Child restraint installation locations ................................... 62
Child restraints.............................. 59