WARNING“Quick-charging” the vehicle battery is dangerous and requires a special
charger and specialist knowledge.
CAUTION
On vehicles with the START/STOP system, the pole terminal of the charger must
not be connected directly to the negative terminal of the vehicle battery, but only
to the engine earth » page 189, Jump-starting in vehicles with the START-STOP
system .
Note
We therefore recommend that vehicle batteries be rapid charged by a specialist
garage.
Disconnecting or reconnecting
First read and observe the introductory information and safety warn-ings
on page 169.
The following functions are initially deactivated or are no longer able to operate
faultlessly after the vehicle battery has been disconnected and reconnected.
OperationOperating measureElectrical power window (operational faults)» page 40Enter the radio/navigation system code num-
ber» User manual of the radio
or » user manual of the naviga-
tion systemSetting the clock» page 12Data in the multifunction display are deleted.» page 13
Note
We recommend having the vehicle checked by a specialist garage to ensure the
full functionality of all electrical systems.
Replacing
First read and observe the introductory information and safety warn-
ings
on page 169.
When replacing a battery, the new vehicle battery must have the same capacity,
voltage, amperage and be the same size. Suitable vehicle batteries can be pur-
chased from a specialist dealer.
We recommend that the battery is replaced by a specialist garage, where the new
vehicle battery will be installed properly and the original battery will be disposed
of in accordance with national regulations.
Automatic load deactivation
First read and observe the introductory information and safety warn-ings
on page 169.
The vehicle voltage control unit automatically prevents the battery from discharg-
ing when the battery is subjected to heavy loads. This may be noticed from the following.
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where appropriate large convenience consumers, e.g. seat heaters, rear win-
dow heaters, have their power limited or shut off completely if necessary.
CAUTION
■ Despite such intervention by the vehicle electric system management, the vehi-
cle battery may be drained. For example, when the ignition is switched on a long
time with the engine turned off or the side or parking lights are turned on during longer parking.■
Consumers which are supplied via a 12 V socket can cause the vehicle battery to
discharge when the ignition is switched off.
Note
Driving comfort is not disrupted by any shutting off of consumers. Often the driv-
er is not aware of it having taken place.
172General Maintenance
Heating55
Removing the seats57
Seats and storage54
see Automatic gearbox Manual gear shifting on the multifunction steer- ing wheel
102
Selector lever see Using the selector lever
101
Service148
Service display16
Service intervals145
Setting Heating
79
Manual air conditioning system82
Manually dimmed rear-view mirror53
Setting the clock Clock
12
Shifting gears Driving and saving energy
105
Side airbag136
Sliding/tilting roof40
Comfort operation41
Emergency operation42
Opening and raising41
Operation41
Sliding/tilting sunroof Closing
41
Snow chains179
Spare wheel177
Speedometer11
Speed symbol see Wheels
176
Spoiler149
Stalk Main beam
45
Turn signals45
START-STOP116
Manually activating/deactivating the system117
Operating conditions for the system116
Starting/shutting down the engine116
Starting and stopping the engine96
Starting engine Jump-starting
187
Starting the engine97
Jump-starting188
START STOP Information messages
117
Jump-starting189
Steering force assistance95
Steering wheel95
Storage72
Storage Compartment Lighting
49
Storage compartments72
Sun visors50
Switching lights on and off43
Switching off the engine98
Synthetic leather156
T
Tailgate
37
Taking care of the vehicle Natural leather
155
Seat belts157
Taking care of your vehicle Automatic car wash system
151
Chrome parts153
Cleaning the wheels154
Door lock cylinders154
Headlight lenses154
High-pressure cleaner151
Plastic parts152
Washing by hand150
Wash system151
Technical data201
Telephone86
Temporary spare wheel177
Tiptronic102
Tools181
TOP TETHER144
Tourist lights46
Towing189
Towing a trailer118
Towing device Description
118
Drawbar load118
Use and care121
Towing eye Front
190
Rear190
Towing protection36
Traction Control System (ASR)112
Trailer118, 121
Loading121
Towing a trailer122
Transport Boot
58
Roof rack system67
Transporting children safely140
Turn signals45
Two-way radio systems86
Type plate201
Tyre load-bearing capacity see Wheels
175
Tyre pressure monitor Setting
176
Tyre repair Check pressure
187
Preparations186
Sealing and inflating the tyre186
Tyres173
New175
Pressure174
See Wheels175
Sizes174
Wear indicator174
215Index
