Mercedes-Benz Coupe Operator's Manual page 68

SmartKey
66
Problem
The engine cannot be
started using the
SmartKey.
The SmartKey cannot
be turned in the ignition
lock.
Possible causes/consequences and M M Solutions
The on-board voltage is too low.
Switch off non-essential consumers, such as seat heating or
X
interior lighting, and try to start the engine again.
Remove the SmartKey and reinsert it into the ignition lock.
X
Start the engine within 30 seconds of inserting the SmartKey
X
into the ignition lock.
Repeat if necessary.
X
If this does not work:
Check the starter battery and charge it if necessary
X
( page 236).
Y
or
Jump-start the vehicle (
X
or
Consult a qualified specialist workshop.
X
The SmartKey has been in position 0 for a considerable time.
Remove the SmartKey and reinsert it into the ignition lock.
X
Check the starter battery and charge it if necessary
X
( page 236).
Y
Start the engine.
X
The on-board voltage is too low.
Switch off nonessential consumers, such as seat heating or
X
interior lighting, and try to turn the SmartKey again.
If this does not work:
Check the starter battery and charge it if necessary
X
( page 236).
Y
or
Jump-start the vehicle (
X
or
Consult a qualified specialist workshop.
X
page 240).
Y
page 240).
Y