236Vehicle careReplacing the vehicle batteryNote
Any deviation from the instructions
given in this section may lead to
temporary deactivation or
disturbance of the stop-start system.
When the vehicle battery is being
replaced, please ensure that there
are no open ventilation holes in the
vicinity of the positive terminal. If a
ventilation hole is open in this area, it
must be closed off with a dummy cap, and the ventilation in the vicinity of the negative terminal must be opened.
Ensure that the battery is always
replaced by the same type of battery.
We recommend that you have the
vehicle battery replaced by a
workshop.
Stop-start system 3 157.Charging the vehicle battery9 Warning
On vehicles with stop-start
system, ensure that the charging potential does not exceed 14.6 V
when using a battery charger.
Otherwise the vehicle battery may be damaged.
Jump starting 3 269.
Discharge protection Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
1. Switch off any electrical consumers which are not requiredfor a safe ride, e.g. seat heating,
heated rear window or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message will disappear
after the engine has been started
twice without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.
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.
Vehicle care237Idle boost
If charging of the vehicle battery is
required due to battery condition, the
power output of the generator must
be increased. This will be achieved by
an idle boost which may be audible.
A message appears in the Driver
Information Centre.
Power outlet
The power outlets are deactivated in
the event of low vehicle battery
voltage.
Warning labelMeaning of symbols: ● No sparks, naked flames or smoking.
● Always shield eyes. Explosive gases can cause blindness or
injury.
● Keep the vehicle battery out of reach of children.
● The vehicle battery contains sulphuric acid which could cause
blindness or serious burn
injuries.
● See the Owner's Manual for further information.
● Explosive gas may be present in the vicinity of the vehicle battery.
Diesel fuel system bleeding If the tank has been run dry, the diesel
fuel system must be bled. Switch on
the ignition three times for
15 seconds at a time. Then crank the
engine for a maximum of 40 seconds. Repeat this process after
no less than 5 seconds. If the engine fails to start, seek the assistance of a
workshop.Wiper blade replacement
Windscreen
Lift the wiper arm until it stays in the
raised position. Lift retaining clip to
disengage the wiper blade and
remove.
Attach the wiper blade slightly angled
to the wiper arm and push until it
engages.
Lower wiper arm carefully.
262Vehicle care
2.Type 1: screw the compressor air
hose to the connection on the
sealant bottle and fit the sealant
bottle into the retainer on the
compressor.
Type 2: remove screw plug from
the compressor and from the
sealant bottle. Screw the bottle on the compressor without removing
the tinfoil from the bottle.
3. Set the compressor near the tyre in such a way that the sealant
bottle is upright.
4. Unscrew valve cap from defective
tyre.
5. Type 1: screw the filler hose to the
tyre valve.
Type 2: remove protection cap
from filler hose and screw the filler
hose to the tyre valve. The air
release valve must be closed (turn clockwise).
6. The switch on the compressor must be set to J.
7. Connect the compressor plug to the power outlet or cigarette
lighter socket.
To avoid discharging the battery, we recommend running the
engine.
308IndexAAccessories and vehicle modifications .......................... 229
Active bonnet ................................ 72
Active emergency braking ..........194
Adaptive cruise control .......110, 181
AdBlue ................................ 109, 162
Adjustable air vents ...................149
Airbag and belt tensioners .........106
Airbag deactivation ..............64, 106
Airbag label................................... 59
Airbag system .............................. 59
Air conditioning regular operation ................................ 150
Air conditioning system .............. 140
Air intake .................................... 150
Air vents...................................... 149
All-wheel drive ........................... 170
Antilock brake system ................ 170
Antilock brake system (ABS) .....107
Anti-theft alarm system ................35
Anti-theft locking system .............. 35
Appearance care ........................273
Armrest ................................... 54, 56
Armrest storage ........................... 75
Ashtrays ....................................... 96 Automatic anti-dazzle ..................41
Automatic dimming ......................40
Automatic light control ...............130
Automatic locking ........................28Automatic transmission .............165
Autostop ..................................... 157
Auxiliary heater ........................... 149
B Baselevel display ........................111
Battery discharge protection ......139
Belts.............................................. 57 BlueInjection ............................... 162
Bonnet ....................................... 231
Brake and clutch fluid .................279
Brake and clutch system ...........107
Brake assist ............................... 173
Brake fluid .................................. 234
Brakes ............................... 170, 234
Breakdown.................................. 271
Bulb replacement ....................... 238
C Capacities .................................. 292
Cargo management system ........81
Catalytic converter .....................162
Central locking system ................26
Centre console lighting ..............138
Centre console storage ...............75
Changing tyre and wheel size ...259
Charging system ........................ 106
Child locks ................................... 29
Child restraint installation locations ................................... 68
Child restraints.............................. 65
310HHalogen headlights ....................238
Hand brake ................................. 170
Hazard warning flashers ............134
Headlight flash ........................... 132
Headlight range adjustment ......132
Headlights................................... 129
Headlights when driving abroad 132
Head restraint adjustment .............8
Head restraints ............................ 46
Head-up display.......................... 118 Heated mirrors ............................. 40
Heated rear window ..................... 43
Heated steering wheel .................89
Heated windscreen .......................44
Heating .................................. 55, 56
High beam ......................... 110, 130
High beam assist ................110, 130
Hill start assist ........................... 173
Horn ....................................... 14, 90
I
Identification plate .....................281
Ignition switch positions .............152
Immobiliser .......................... 38, 110
Indicators .................................... 101
Inductive charging ........................95
Info Display ................................. 117
Instrument cluster ........................97
Instrument panel fuse box .........252Instrument panel illumination
control .................................... 136
Instrument panel overview ........... 10
Interactive driving system ...........176
Interior care ............................... 275
Interior lighting ............................ 136
Interior lights ...................... 137, 248
Interior mirrors .............................. 40
Interruption of power supply ......168
Introduction .................................... 3
J
Jump starting ............................. 269
K
Key, memorised settings ..............26
Keys ............................................. 21
Keys, locks ................................... 21
L
Lane change alert .......................207
Lane keep assist ................108, 218
Lashing eyes ............................... 81
LED headlights ...........110, 133, 240
Lighting features .........................138
Light switch ................................ 129
Load compartment ................30, 76
Load compartment cover .............79
Loading information .....................86
Low fuel ..................................... 109M
Malfunction indicator light ..........106
Manual anti-dazzle ......................40
Manual mode ............................. 166
Manual seat adjustment ...............49
Manual transmission .................. 169
Massage ....................................... 56
Memorised settings ......................26
Mirror adjustment ........................... 8
Misted light covers .....................136
N New vehicle running-in ..............152
Number plate light .....................248
O
Object detection systems ...........199
Odometer ................................... 102 Oil, engine .......................... 279, 283
Outside temperature ....................93
Overrun cut-off ........................... 157
P Panoramic view system ..............209
Parking ................................ 19, 159
Parking assist ...................... 40, 199
Parking brake ............................ 171
Parking lights ............................. 136
Particulate filter ........................... 160
Pedestrian detection ...................111
Performance .............................. 288