242Vehicle 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 3 162.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 3 275.
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 care243Idle 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.
268Vehicle 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.
316IndexAAccessories and vehicle modifications .......................... 235
Active bonnet ................................ 71
Active emergency braking ..........200
Adaptive cruise control .......111, 185
AdBlue ................................ 109, 167
Adjustable air vents ...................154
Airbag and belt tensioners .........106
Airbag deactivation ..............63, 106
Airbag label................................... 58
Airbag system .............................. 58
Air conditioning regular operation ................................ 156
Air conditioning system .............. 145
Air intake .................................... 155
Air vents...................................... 154
All-wheel drive ........................... 174
Antilock brake system ................ 175
Antilock brake system (ABS) .....108
Anti-theft alarm system ................34
Anti-theft locking system .............. 34
Appearance care ........................279
Armrest ................................... 53, 55
Armrest storage ........................... 74
Ashtrays ....................................... 95 Automatic anti-dazzle ..................39
Automatic dimming ......................38
Automatic light control ...............135
Automatic locking ........................27Automatic transmission .............169
Autostop ..................................... 162
Auxiliary heater ........................... 154
B Baselevel display ........................112
Battery discharge protection ......144
Belts.............................................. 56 BlueInjection ............................... 167
Bonnet ....................................... 237
Brake and clutch fluid .................284
Brake and clutch system ...........107
Brake assist ............................... 177
Brake fluid .................................. 240
Brakes ............................... 175, 240
Breakdown.................................. 277
Bulb replacement ....................... 244
C Capacities .................................. 297
Cargo management system ........80
Catalytic converter .....................166
Central locking system ................25
Centre console lighting ..............143
Centre console storage ...............74
Changing tyre and wheel size ...265
Charging system ........................ 107
Child locks ................................... 28
Child restraint installation locations ................................... 67
Child restraints.............................. 64
318HHalogen headlights ....................244
Hand brake ................................. 175
Hazard warning flashers ............139
Headlight flash ........................... 137
Headlight range adjustment ......137
Headlights................................... 134
Headlights when driving abroad 137
Head restraint adjustment .............8
Head restraints ............................ 45
Head-up display.......................... 120 Heated mirrors ............................. 38
Heated rear window ..................... 42
Heated steering wheel .................88
Heated windscreen .......................42
Heating .................................. 54, 55
High beam ......................... 110, 135
High beam assist ................110, 135
Hill start assist ........................... 177
Horn ....................................... 14, 89
I
Identification plate .....................286
Immobiliser .......................... 36, 110
Indicators .................................... 101
Inductive charging ........................94
Info Display ................................. 118
Instrument cluster ........................96
Instrument panel fuse box .........258Instrument panel illumination
control .................................... 141
Instrument panel overview ........... 10
Interactive driving system ...........180
Interior care ............................... 281
Interior lighting ............................ 141
Interior lights ...................... 142, 254
Interior mirrors .............................. 39
Interruption of power supply ......173
Introduction .................................... 3
J
Jump starting ............................. 275
K Key, memorised settings ..............25
Keys ............................................. 20
Keys, locks ................................... 20
L
Lane change alert .......................213
Lane keep assist ................108, 224
Lashing eyes ............................... 80
LED headlights ...........110, 138, 246
Lighting features .........................143
Light switch ................................ 134
Load compartment ................29, 75
Load compartment cover .............78
Loading information .....................85
Low fuel ..................................... 110M
Malfunction indicator light ..........107
Manual anti-dazzle ......................39
Manual mode ............................. 171
Manual seat adjustment ...............48
Manual transmission .................. 174
Massage ....................................... 55
Memorised settings ......................25
Midlevel display .......................... 112
Mirror adjustment ........................... 8
Misted light covers .....................141
N New vehicle running-in ..............158
Number plate light .....................254
O Object detection systems ...........205
Odometer ................................... 102
Oil, engine .......................... 284, 288
OnStar ........................................ 129
Outside temperature ....................92
Overrun cut-off ........................... 162
P
Panoramic view system ..............215
Parking ................................ 19, 164
Parking assist ...................... 39, 205
Parking brake ............................ 176
Parking lights ............................. 141
Particulate filter ........................... 165