Mercedes-Benz 2012 E-Class Sedan Operator's Manual page 83

Problem
You have lost the
mechanical key.
The engine cannot be
started using the
SmartKey.
The engine cannot be
started using the
SmartKey.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
3 Not on vehicles with DIRECT SELECT lever.
Possible causes/consequences and M Solutions
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X
Check the starter battery and charge it if necessary
( Y page 335).
or
X
Jump-start the vehicle (
or
X
Consult a qualified specialist workshop.
The steering lock is mechanically blocked
X
Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions.
A door is open. Therefore, the SmartKey cannot be detected as
easily.
X
Close the door and try to start the vehicle again.
There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock.
I n f o r m a t i o n P r o v i d e d b y :
Y page 338).
3
.
SmartKey
81
Z