Mercedes-Benz E-Class Owner's Manual page 95

Problems with the key
Problem
You can no longer lock
or unlock the vehicle
using the key.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO.
You have lost a key.
You have lost the emer-
gency key element.
Possible causes/consequences and M Solutions
The key battery is discharged or nearly discharged.
X
Check the key battery (
( Y page 92).
If this does not work:
X
Lock ( Y page 96) or unlock (
the emergency key element.
The key is faulty.
X
Lock ( Y page 96) or unlock (
the emergency key element.
X
Have the key checked at a qualified specialist workshop.
The key battery is discharged or nearly discharged.
X
Check the key battery (
Y
( page 92).
If this does not work:
X
Lock ( Y page 96) or unlock (
the emergency key element.
There is interference from a powerful source of radio waves.
X
Lock ( Y page 96) or unlock (
the emergency key element.
There is a fault with KEYLESS-GO.
X
Lock/unlock the vehicle using the remote control function of
the key.
X
Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle can also not be locked/unlocked using the remote
control function:
X
Y
Lock ( page 96) or unlock (
the emergency key element.
X
Have the vehicle and key checked at a qualified specialist work-
shop.
X
Have the key deactivated at a qualified specialist workshop.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
Y page 91) and replace it if necessary
Y page 97) the vehicle using
Y page 97) the vehicle using
Y page 91) and replace it if necessary
Y page 97) the vehicle using
Y page 97) the vehicle using
Y
page 97) the vehicle using
Key
93
Z