Disconnecting The Battery - Mercedes-Benz 2008 C-Class Operator's Manual

Practical hints
Battery
Starter battery
1 Battery
2 Positive terminal
3 Negative terminal
4 Ventilation hose
i
If the battery is discharged, you must use
the mechanical key to unlock ( page 424) or
lock ( page 425) the vehicle.
448

Disconnecting the battery

Warning!
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.
Apply the parking brake ( page 134).
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):
G Press the start/stop button until
the engine shuts off.
Open the driver's door.
Open the hood ( page 325).
Remove the filter box ( page 447).
Read and observe safety instructions
and precautions ( page 446).
Disconnect the battery negative lead
from negative terminal 3.
Remove cover from the positive
terminal 2.
Disconnect the battery positive lead.