WARNING (Continued)■If your eyes or skin come into contact with the electrolytic fluid, immedi-
ately wash the affected area for a few minutes long with a lot of water. Get
medical assistance without delay.■
Keep the vehicle battery away from people who are not completely inde-
pendent (e.g. children).
■
Do not tilt the battery otherwise battery electrolyte may flow out of the
battery vent openings.
WARNINGWorking on the car battery may cause explosion, fire, injury or chemical
burn! The following guidelines must be observed.■
Do not smoke, use open flames or light or transmitting devices.
■
A discharged vehicle battery may freeze slightly. Never charge up a fro-
zen or thawed vehicle battery. Replace a frozen vehicle battery.
■
Never use a damaged vehicle battery.
■
Do not connect the battery terminals, bridging the two poles will cause a
short circuit.
CAUTION
Ensure that battery acid does not come into contact with the bodywork – risk
of damage to the vehicle.
Note
■ We recommend having all work on the vehicle battery carried out by a spe-
cialist garage.■
You should replace batteries older than 5 years.
Check conditionFig. 173
Vehicle battery: Open the cover / acid level indicator
Read and observe
and on page 142 first.
The battery condition is checked regularly by a specialist garage as part of the
inspection service.
Check the acid level
For car batteries with acid level indicator, acidity can be checked on the basis
of a colour display. In vehicle batteries with the label “AGM” there is no acid
level examination.
Depending on the equipment, the vehicle battery may be provided with a cov-
er, this can be opened in the direction of arrow » Fig. 173 -
.
Air bubbles can influence the colour of the indicator. Therefore, carefully knock
on the display » Fig. 173 -
.
Black colour - electrolyte level is correct.
Colourless or light yellow colour - electrolyte level too low, the battery must be replaced.
Battery discharge
If frequent short journeys are made, the vehicle battery does not recharge suf-
ficiently.
The battery capacity decreases at low temperatures.
If the vehicle is not used for longer than 3 to 4 weeks, then disconnect the
negative terminal of the battery or charge the battery constantly with a very
low charging current.
143Inspecting and replenishing
ChargingRead and observe
and on page 142 first.
Only charge the battery when the ignition and all consumers are switched off.
Refer to the instructions of the charger manufacturer.
Charging
›
For vehicles withthe START-STOPsystem or auxiliary heater
, connect the -
terminal of the charger on the battery’s
-pole,
the -terminal of the charg-
er to the ground point of the engine » page 157.
›
For vehicles without the START-STOPsystem or auxiliary heating, connect
the charger terminals to the corresponding battery poles ( to
,
to
).
›
Plug the mains cable of the charger into the power socket and switch the
charger on.
›
Once charging is complete: Switch off the charger and remove the mains ca-
ble from the power socket.
›
Disconnect the terminals of the charger from the vehicle battery.
A charging current of 0.1 multiple of the total vehicle battery capacity (or low-
er) must be used until full charging is achieved.
WARNING■ When charging the vehicle battery, hydrogen is released - risk of explo-
sion. An explosion can be caused through sparking while unclamping or
loosening the cable plug.■
So-called“quick-charging” of the vehicle battery is dangerous and re-
quires a special charger and specialist knowledge. Therefore, have“Quick
loading” carried out by a specialist garage.
Disconnect/reconnect and change
Read and observe
and on page 142 first.
The new vehicle battery must have the same capacity, voltage, current and the
same size as the original battery.
We recommend you have the battery replaced by a specialist garage.
›
To disconnect , switch off the ignition and disconnect the negative terminal
first , then disconnect the positive terminal
.
›
When
reconnecting the battery, reconnect the positive terminal first
, then
connect the negative terminal .
After disconnecting and re-connecting the vehicle battery, the following func-
tions or devices are partially or completely inoperative.Function / deviceOperating measurePower windows» page 52Time settings» page 37
CAUTION
■ Disconnect the battery only with the ignition and consumers turned off - risk
of damaging the electrical system of the vehicle.■
Before disconnecting the battery, always close all electric windows other-
wise malfunctions of the window can occur.
■
Under no circumstances mix up the charging cables – risk of fire.
Note
After disconnecting and reconnecting the vehicle battery, we recommend hav-
ing the vehicle checked by a specialist to ensure that the full functionality of
the vehicle is guaranteed.144General Maintenance
Jump-starting using the battery from another vehicleFig. 188
Jump-starting:
- Discharged battery,
- power-supplying bat-
tery / ground point of the engine for the START-STOP system
Read and observe
on page 156 first.
If, because of a discharged battery, it is not possible to start the engine, the
battery of another vehicle can be used to start the engine. To do this, jump-
start cables are required which have a sufficiently large cross-section and in-
sulated terminal clamps.
The rated voltage of the two batteries must be 12 V. The capacity (Ah) of the
power-supplying battery must not be significantly lower than the capacity of
the discharged battery.
The jump-start cables must be attached in the following sequence.
›
Attach clamp
1
to the positive terminal of the discharged battery.
›
Attach clamp
2
to the positive terminal of the power-supplying battery.
›
Attach clamp
3
to the negative terminal of the power-supplying battery.
›
For vehicles with the START-STOPsystem, attach clamp
4
to the ground
point of the engine
A
» Fig. 188 .
›
For vehicles without the START-STOPsystem, attach clamp
4
to a solid
metal part firmly attached to the engine block or directly to the engine block.
Starting engine
›
Start the engine on the vehicle providing the power and allow it to idle.
›
Initiate the starting process in the vehicle with the discharged battery.
›
If the engine does not start within 10 s, then cancel the starting procedure
and repeat after half a minute.
›
Detach the jumper cables in the exact reverse order that they were attached.
WARNING■
Never clamp the jump cable to the negative terminal of the discharged
battery - risk of explosion.■
The non-insulated parts of the terminal clamps must never touch each
other – risk of short circuit.
■
The jump-start cable connected to the positive terminal of the battery
must not come into contact with electrically conducting parts of the vehicle
– risk of short circuit.
■
Position the jump cables so that they cannot be caught in rotating parts
in the engine compartment - danger of injuries and the risk of vehicle dam-
age.
Towing the vehicle
Information about the towing process
Fig. 189
Braided tow ropes/spiral tow rope
To tow with a tow rope, only use a braided synthetic fibre rope » Fig. 189 -
»
.
Attach the tow rope or the tow bar to the towing eyes at the front
» page 158 ,towing eyes at the rear » page 159or to thetowing device of the
trailer device » page 119 .
Conditions for towing. Cars with automatic gearboxes must not be towed with the rear wheels
raised - there is a risk of gearbox damage!
If the gearbox has no oil, your vehicle must be towed with the front axle
raised clear of the ground or on a breakdown vehicle or trailer.
157Emergency equipment, and self-help
Switch on ignition91
Key91
T
Tablet holder
73
Tailgate50
TCS Deactivate/activate
102
Function102
Warning light30, 31
TCS - off Warning light
31
Technical data173
Telephone See Owner´s Manual -Infotainment
6
Ticket holder66
Time37
Tiptronic97
Tools150
TOP TETHER24
Towing159
Towing a trailer125
Towing away157
Towing device Accessories
123
Description119
Vertical load119
Towing eye158
Towing protection49
Towing the vehicle157
Traction control (TCS)30, 102
Trailer Connect and disconnect
123
Load124
Loading124
Towing a trailer125
Trailer towing119
Transport Luggage compartment75
Roof rack84
Towing device and trailer119
Transporting children20
Triangle149
Turn signal54
Turn signal system Warning light
32, 33
Tyre load capacity147
Tyre pressure146
Warning light32
Tyre pressure monitor refer to the tyre pressure monitoring
117
Tyre pressure monitoring117
Warning light32
Tyre repair154
Tyres145
damage145
Explanation of the label147
new145
Tyre pressure146
Wear indicator146
Tyre size147
U
Umbrella Tray
72
Unlock Individual settings
47
Unlocking Central locking button
46
In case of emergency159
KESSY46
Key45
Remote control45
Unlocking and locking44
Unlock steering lock90
USB67
Used vehicles Acceptance and recycling129
Useful equipment Clothes hook
72
Cup holders68
Glasses compartment71
Multimedia holder70
Useful features Storage compartment
66
Useful Features 12-volt power socket in the luggage compart-ment
70
12-volt socket in the interior70
Ashtray69
Cigarette lighter69
Coin and card holders67
Pockets73
Reflective vest149
Ticket holder66
V
Variable loading floor
81
Vehicle battery Automatic shutdown of consumers
142
Charging144
Safety instructions142
Warning light34
Vehicle Condition see Auto Check Control
37
Vehicle data sticker173
Vehicle data sticker and nameplate Vehicle data sticker and nameplate
173
Vehicle dimensions176
Vehicle height176
Vehicle Identification Number (VIN)173
Vehicle length176
Vehicle tool kit150
Vehicle width176
Vest149
189Index