Mercedes Benz 2008 c300 Manuale Utente

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Practical hints
Battery
Starter battery 
1 Battery
2 Positive terminal
3 Negative terminal
4 Ventilation hose
Disconnecting the battery
Apply the parking brake (
Make sure gear selector lever* is set to 
position P (manual transmission to 
Neutral).
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO* (Canada 
only):
Press the start/stop button until 
the engine shuts off.
Open the driver’s door.
Open the hood (
Read and observe safety instructions 
and precautions (
Disconnect the battery negative lead 
from negative terminal
3.
Remove cover from the positive 
terminal
2.
Disconnect the battery positive lead.
i
If the battery is discharged, you must use 
the mechanical key to unlock (
page 425) the vehicle.
Warning!
G
With a disconnected battery
you will no longer be able to turn the 
SmartKey in the starter switch and 
pressing the KEYLESS-GO* start/stop 
button (Canada only) will have no effect
vehicles with automatic transmission*: 
the gear selector lever will remain 
locked in position P
!
Always disconnect the starter battery in the 
order described below. You could otherwise 
damage the vehicle’s electronics.