Mercedes-Benz E 2008 Series Owner's Manual page 304

mkalafa,
Key
Problem
You cannot lock or unlock the
vehicle using the key.
The battery charge indicator lamp
of the key does not go on during
the test.
You have lost a key.
You have lost the emergency key
element.
Version: 2.9.4
Possible cause/consequence
The key batteries are discharged
or nearly discharged.
The key is faulty.
The key batteries are discharged.
Suggested solutions
To do this, point the tip of the key at the driver's door handle from
X
close range and try to unlock or lock the vehicle again.
If this does not work:
Lock or unlock the vehicle using the emergency key element
X
( page 306).
Y
Check the key batteries ( page 310) and replace them if neces-
X
Y
sary ( page 310).
Y
Lock or unlock the vehicle using the emergency key element
X
( page 306).
Y
Have the key checked at a qualified specialist workshop.
X
Change the batteries ( page 310).
X
Y
Have the key cancelled at a Mercedes-Benz Service Centre.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the manual locks changed too.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the manual locks changed too.
X
Practical advice
Troubleshooting
Z
301