Page 156 of 343

154LightingExit lighting is switched off
immediately if the turn signal lever is
pulled while the driver's door is open.
Activation, deactivation and duration of this function can be changed in the Settings menu in the Info-Display.
Vehicle personalisation 3 132.
The settings can be saved for the key
being used 3 22.
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 window and mirrors
● Heated seats
● FanIn the second stage a message which
confirms the activation of the vehicle
battery discharge protection will be
displayed in the Driver Information Centre.
Switching off electric lights
To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights are switched
off automatically after some time.
Page 171 of 343

Driving and operating169The engine will be switched off whilethe ignition stays on.
An Autostop is indicated by the
needle at the AUTOSTOP position in
the tachometer.
During an Autostop, the heating and
brake performance will be
maintained.
Caution
The power steering assist may be
reduced during an Autostop.
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 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 3 158.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 166.
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 electric
features, e.g. auxiliary electric heater
or heated rear window are disabled or switched into a power saving mode.
The fan speed of the climate control
system is reduced to save power.
Restart of the engine by the driver
Depress the clutch pedal to restart the
engine.
Page 338 of 343

336IndexAAccessories and vehicle modifications .......................... 229
Active Emergency Braking .........199
Active head restraints ..................38
Adaptive cruise control .......119, 188
Adaptive forward lighting ..119,
146, 240
Adjustable air vents ...................163
Airbag and belt tensioners .........114
Airbag deactivation ..............54, 114
Airbag system .............................. 52
Air conditioning regular operation ................................ 164
Air conditioning system .............. 156
Air intake .................................... 163
Air vents...................................... 163
Antilock brake system ................ 177
Antilock brake system (ABS) .....116
Anti-theft alarm system ................28
Anti-theft locking system .............. 27
Appearance care ........................285
Armrest ........................................ 48
Armrest storage ........................... 63
Ashtrays ..................................... 107
Automatic anti-dazzle ..................32
Automatic light control ...............143
Automatic locking ........................24
Automatic transmission .............173Autostop..................................... 168
Auxiliary heater ........................... 162
B
Battery discharge protection ......154
Battery voltage ........................... 129 Belts.............................................. 49
Bicycle rack .................................. 65
Bonnet ....................................... 230
Brake and clutch fluid .................290
Brake and clutch system ...........115
Brake assist ............................... 180
Brake fluid .................................. 234
Brakes ............................... 177, 234
Breakdown.................................. 283
Bulb replacement ....................... 237
C Capacities .................................. 307
Cargo management system ........91
Car Pass ...................................... 21
Catalytic converter .....................172
Central locking system ................23
Centre console lighting ..............153
Centre console storage ...............64
Changing tyre and wheel size ...269
Charging system ........................ 115
Child locks ................................... 25
Child restraint installation locations ................................... 57
Child restraints.............................. 56