ReplaceFirst read and observe the introductory information and safety warn-
ings
on page 134.
When replacing a battery, the new vehicle battery must have the same capacity,
voltage, amperage and be the same size. Suitable vehicle battery types can be purchased from a specialist garage.
We recommend having the battery replaced by a specialist garage, where the
new vehicle battery will be installed properly and the original battery will be dis-
posed of in accordance with national regulations.
Disconnecting and reconnecting
First read and observe the introductory information and safety warn-
ings
on page 134.
On disconnecting and reconnecting the vehicle battery the following functions
are initially deactivated or are no longer able to operate fault-free:
OperationOperating measureEnter radio code number» Radio manualSetting the clock» page 14Data in the multifunction display are deleted.» page 13
Note
We recommend having the vehicle checked by a specialist garage in order to en-
sure full functionality of all electrical systems.
Automatic load deactivation
First read and observe the introductory information and safety warn-ings
on page 134.
The vehicle voltage control unit automatically prevents the battery from discharg-
ing when the battery is put under high levels of strain. This manifests itself by the following.
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where necessary, large convenience consumers such as seat heaters and rear
window heaters have their power limited or are shut off completely in the event of an emergency.
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 that are supplied via a 12-V power socket can cause the vehicle bat-
tery to discharge when the ignition is switched off.
Note
Driving comfort is not impaired by consumers being deactivated. The driver is of-
ten not aware of it having taken place.
137Inspecting and replenishing
Replacing fuses›Press the button 1 » Fig. 124 .›
Push the lid in the direction of the arrow.
›2
Remove the bracket.
›
Place the bracket on the respective fuse and pull this out.
›
Insert a new fuse.
›
Replace the bracket at the original position.
›
Fold the cover upwards against the direction of the arrow.
›
Close the cover until it clicks into place.
Fuse assignment on the underside of the dash panel
No.Power consumer1Telephone, radiator fan, instrument cluster, engine control unit2Diagnostic port, air compressor, bar with buttons, control unit for air
conditioning3Clutch pedal switch, brake pedal switch4Switch illumination, number plate light5Steering column switch, central control unit6Headlamp beam adjustment, exterior mirror adjustment7-8Automated transmission9Airbag, bar with buttons10Park Assist11Headlights12The rear fog light13Headlights14Rear window wiper15Light switch16Steering force assistance17Windscreen washer18Reverse light switch19Injection valves, coolant pump20ABS/ESP21Parking lights,22Daytime running lights23Headlights24FlasherNo.Power consumer25Windscreen Wiper and Washer System26Not assigned27Interior lighting28Diagnostic connector29Central control unit30Exterior mirror heater31Radiator fan, lambda probe32Blinking light, brake light, daytime running lights, rear light33Main beam34Main beam35Fuel pump36Cigarette lighter, 12-volt power socket37Air blower for heating and air conditioning38Radio39Panoramic sliding roof, horn40Engine control unit41Central locking system42Ignition module43Seat heaters44Fuel pump45Light switch46Rear window heater47Windows48Horn49Windscreen wipers50Fog lights, headlight51Power windows
155Fuses and light bulbs
