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Lighting143They 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
ignition 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 3 119.
Vehicle personalisation 3 124.
The settings can be saved for the key being used 3 25.
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.
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Driving and operating183During an Autostop, the heating and
brake performance will be
maintained.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled:
● The stop-start system is not manually deactivated.
● The bonnet is fully closed.
● The driver's door is closed or the driver'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 exhaust filter is not active.
● The vehicle was driven at least at
walking speed since the last
Autostop.
Otherwise an Autostop will be
inhibited.
The stop-start system will be
deactivated on inclines of 12% or
more.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 165.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 178.
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 orswitched 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 transmission
All engines can be restarted in two
ways: with a conventional restart or a
late restart.Conventional restart
Depress the clutch pedal without
depressing the brake pedal to restart
the engine.Late restart
Late restart is only available on
inclines 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 moveselector lever out of D into N or P to
restart the engine.
Page 340 of 347

338IndexAAccessories and vehicle modifications .......................... 254
Activating phone projection ........164
Active bonnet ................................ 71
Active emergency braking ..........220
Adaptive cruise control .......111, 206
AdBlue ................................ 109, 187
Adjustable air vents ...................174
Airbag and belt tensioners .........106
Airbag deactivation ..............63, 106
Airbag label................................... 58 Airbag system .............................. 58
Air conditioning regular operation ................................ 176
Air conditioning system .............. 165
Air intake .................................... 175
Air vents...................................... 174
All-wheel drive ........................... 194
Android Auto ............................... 164
Antilock brake system ................ 195
Antilock brake system (ABS) .....108
Anti-theft alarm system ................34
Anti-theft locking system .............. 34
Appearance care ........................297
Apple CarPlay............................. 164
Armrest ................................... 53, 55
Armrest storage ........................... 74
Ashtrays ....................................... 95
Audio .......................................... 154Audio files................................... 154
Automatic anti-dazzle ..................40
Automatic dimming ......................39
Automatic light control ...............133
Automatic locking ........................27
Automatic transmission .............189
Autostop ..................................... 182
Auxiliary heater ........................... 174
B Baselevel display ........................112
Basic operation ........................... 150
Battery discharge protection ......143
Battery voltage ........................... 124
Belts.............................................. 56
BlueInjection ............................... 187
Bluetooth connection ..................163
Bonnet ....................................... 256
Bottom bar .................................. 145
Brake and clutch fluid .................302
Brake and clutch system ...........107
Brake assist ............................... 197
Brake fluid .................................. 259
Brakes ............................... 195, 259
Breakdown.................................. 295
Bulb replacement ....................... 262
C
Capacities .................................. 318
Cargo management system ........80
Catalytic converter .....................186