216Vehicle careBrakesIn the event of minimum thickness of
the brake lining, a squealing noise
sounds during braking.
Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe DANGER and MAX marks.
If fluid level is below DANGER, seek
the assistance of a workshop.
Brake and clutch fluid 3 262.
Vehicle battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
four weeks can lead to battery
discharge. Disconnect the clamp from the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
Battery discharge protection 3 137.
Replacing the vehicle battery Notice
Any deviation from the instructions
given in this section may lead to
temporary deactivation or
disturbance of the stop-start system.
Vehicle care217When 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.
The vehicle battery has to be
replaced by a workshop.
Stop-start system 3 156.
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 3 249.
Discharge protection
Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
When the vehicle is being driven, the
load reduction function temporarily
deactivates certain functions, such as
the air conditioning, the heated rear
window, heated steering wheel, etc.
The deactivated functions are
reactivated automatically as soon as
conditions permit.
Idle 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 label
Meaning 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.
238Vehicle careTyre deflation detection
system
The tyre deflation detection systemcontinually checks the rotation speed
of all four wheels and warns on low
tyre pressure condition once vehicle
is driving. This is achieved by
comparing tyre rolling circumference
with reference values and further
signals.
If a tyre loses pressure the control
indicator q illuminates, a warning
chime is given and a warning
message is displayed in the Driver
Information Centre.
In this case reduce speed, avoid
sharp cornering and strong braking.
Stop at next safe opportunity and
check tyre pressure.
Control indicator q 3 113.
After adjusting tyre pressure initialise
system to extinguish the control
indicator and restart system.Caution
Deflation detection system warns
just about low tyre pressure
condition and does not replace
regular tyre maintenance by the
driver.
In case of a system malfunction, the
control indicators q and R
appear at the same time or a
message is displayed in the Driver
Information Centre. Set correct tyre
pressure and reinitialise system. If the
failure continues to be displayed,
contact a workshop. The system is
inoperable when ABS or ESC has a
malfunction or a temporary spare
wheel is used. Once the road tyre has
been refitted, check the tyre pressure with cold tyres and initialise the
system.
System initialisation
After tyre pressure correction or
wheel change, the system must be
initialised to learn new circumference reference values:
1. Always ensure that all four tyres have correct tyre pressure
3 271.
2. Apply parking brake. 3. Start the initialisation procedure:
a) Vehicles without Infotainment
system: Press button q for 3
seconds. A chime confirms the
start.
b) Vehicles with Infotainment
system: Initialise the deflation
detection system in the vehicle
personalisation 3 123.
4. Reset is confirmed by pop-up indication.
242Vehicle care8. All of the sealant is pumped intothe tyre. Then the tyre is being
inflated.
9. The prescribed tyre pressure should be obtained within ten
minutes.
Tyre pressure 3 271.
When the correct pressure is
obtained, switch off the
compressor.
If the prescribed tyre pressure is
not obtained within ten minutes,
remove the tyre repair kit. Move
the vehicle one tyre rotation.
Reattach the tyre repair kit and
continue the filling procedure for
ten minutes. If the prescribed tyre
pressure is still not obtained, the
tyre is too badly damaged. Seek
the assistance of a workshop.
Drain excess tyre pressure with
the button.
Do not run the compressor longer than ten minutes.
10. Detach the tyre repair kit. Stow tyre repair kit in load
compartment.
11. Remove any excess sealant using a cloth.12. Start driving immediately so thatsealant is evenly distributed in the
tyre. After driving approx.
three miles but no more than ten
minutes, stop and check tyre
pressure. Turn selector on the kit
to the air pump symbol. Connect
compressor air hose to tyre valve. Fill tyre as described before. Drain excess tyre pressure with the
button on the kit.
If tyre pressure hasn't decreased
under 150 kPa (1.5 bar), set it to
the correct value. Otherwise the
vehicle must not be used. Seek
assistance of a workshop. 3 271
Service and maintenance259General information
Service information
In order to ensure economical and
safe vehicle operation and to
maintain the value of your vehicle, it
is of vital importance that all
maintenance work is carried out at the proper intervals as specified.
The detailed, up-to-date service
schedule for your vehicle is available
at the workshop.
Severe operating conditions exist if one or more of the following
circumstances occur frequently: Cold starting, stop and go operation, e.g.
for taxis and police vehicles, trailer
operation, mountain driving, driving
on poor and sandy road surfaces,
increased air pollution, presence of
airborne sand and high dust content,
driving at high altitude and large
variations of temperature.
Under these severe operating
conditions, certain service work may
be required more frequently than the
regular service interval indicated inthe service display. Contact a
workshop for customised service
schedules.
Service display 3 108.
285Particulate filter........................... 160
Performing work ........................212
Peripheral lighting .......................137
Power button .............................. 153
Power outlets ............................... 97
Power seat adjustment ................49
Power sliding doors ......................30
Power windows ............................ 41
Preheating ................................. 112
Puncture ..................................... 245
R Radio Frequency Identification (RFID) ..................................... 280
Radio (Infotainment system)....... 123
Radio remote control ...................22
Rain sensor ................................ 114
REACH ....................................... 276
Reading lights ............................ 135
Rear doors .................................... 30
Rear fog light .............114, 133, 225
Rear seats ................................... 52
Rear view camera ...................... 199
Rear windows .............................. 42
Rear window wiper and washer ..96
Recommended fluids and lubricants ........................ 262, 266
Refuelling ................................... 204 Registered trademarks ...............276
Reversing lights .........................134Ride control systems ..................170
Roadside assistance ..................127
Roller blinds ................................. 44
Roof .............................................. 45
Roof bars ...................................... 89
Roof load ...................................... 90
Roof rack ..................................... 89
S Safety net .................................... 83
Seat adjustment ............................. 7
Seat belt ........................................ 8
Seat belt reminder .....................109
Seat belts ..................................... 56
Seat folding .................................. 50
Seat heating ................................. 51
Seat position ................................ 47
Selective catalytic reduction .......161
Selective ride control ..................171
Selector lever.............................. 165
Service ............................... 150, 259
Service display .......................... 108
Service information ....................259
Service vehicle soon .................. 111
Side airbag system ......................63
Side blind spot alert ............115, 194
Sidelights .................................... 129
Side turn lights ........................... 228
Sliding doors ................................ 30
Sliding side doors .........................30SOS............................................ 127
Spare wheel ............................... 245
Speed limiter....................... 115, 176
Speedometer ............................. 104
Starting and operating ................152
Starting off ................................... 18
Starting the engine ....................154
Steering ...................................... 152
Steering column controls ..............94
Steering wheel .............................. 94
Steering wheel adjustment ......9, 93
Steering wheel controls ...............93
Stop engine ................................ 111
Stop-start system........................ 156
Storage ......................................... 77
Storage compartments .................77
Sunvisor lights ........................... 136
Sun visors .................................... 44
Symbols ......................................... 4
System check ............................. 111
T
Table............................................. 86
Tachometer ............................... 106
Tailgate ......................................... 32
tailgate window ............................. 42
Tail lights ................................... 225
Three-point seat belt .................... 57
Tools .......................................... 234
torch............................................ 134