Page 142 of 327
140LightingSelect the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 121.
The settings can be saved for the key
being used 3 24.
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 164 of 327

162Driving and operating● The climate control systemallows 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 3 141.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 156.
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
Depress the clutch pedal to restart the
engine.
The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver Information Centre.
Control indicator - 3 106.
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.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.
● The charging level of the vehicle battery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.
If the bonnet is not fully closed, a warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during the restart might be noticeable.
Page 252 of 327
250Vehicle careNo.Circuit62Heated steering wheel (only
vehicles without load compart‐
ment fuse box)63Rear window sensor64Adaptive forward lighting65Auxiliary pump (only on vehicles with stop-start system)66Rear window washer system67Fuel system control module68–69Vehicle battery sensor70Rain sensor71Vehicle battery sensor
After changing of defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open compartment, compress the
locking tabs, fold compartment down and remove.
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox and
remove the cover.
Page 322 of 327

320IndexAAccessories and vehicle modifications .......................... 227
Active emergency braking ..........196
Active head restraints ...................47
Adaptive cruise control .......110, 184
Adaptive forward lighting ...110, 133
AdBlue ................................ 108, 165
Adjustable air vents ...................152
Airbag and belt tensioners .........105
Airbag deactivation ..............63, 105
Airbag label................................... 58 Airbag system .............................. 58
Air conditioning regular operation ................................ 154
Air conditioning system .............. 141
Air intake .................................... 153
Air vents...................................... 152
All-wheel drive ........................... 173
Antilock brake system ................ 174
Antilock brake system (ABS) .....107
Anti-theft alarm system ................35
Anti-theft locking system .............. 34 Appearance care ........................272
Armrest ................................... 53, 54
Armrest storage ........................... 71
Ashtrays ....................................... 93 Automatic anti-dazzle ..................40
Automatic climate control system .................................... 143Automatic dimming ......................39
Automatic light control ...............130
Automatic locking ........................28
Automatic transmission .............168
Automatic transmission fluid .......230
Autostop ............................. 110, 160
Auxiliary heater ........................... 152
B
Baselevel display ........................111
Battery discharge protection ......140
Battery voltage ........................... 121
Belts.............................................. 55
BlueInjection ............................... 165
Bonnet ....................................... 228
Brake and clutch fluid .................276
Brake and clutch system ...........106
Brake assist ............................... 176
Brake fluid .................................. 233
Brakes ............................... 174, 233
Breakdown.................................. 268
Bulb replacement ....................... 236
C Capacities .................................. 294
Cargo management system ........77
Car Pass ...................................... 22
Catalytic converter .....................165
Central locking system ................25
Centre console lighting ..............139
Changing tyre and wheel size ...258