Problems with the key
Problem Possible causes/consequences and M Solutions
You cannot lock or
unlock the vehicle
using the key.
The key battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
function of the key. Do this by pressing the % or &
button in the immediate vicinity of the vehicle.
If this does not work:
X
Change the key battery if necessary (Y page 69).
X
Unlock the vehicle with the key in the emergency lock
(Y page 74) or lock the vehicle with the emergency locking
(Y page 74).
There is interference from a powerful source of radio waves.
X
Try again to lock/unlock the vehicle using the remote control
function of the key. Do this by pressing the % or &
button in the immediate vicinity of the vehicle.
The key is faulty.
X
Unlock the vehicle with the key in the emergency lock
(Y page 74) or lock the vehicle with the emergency locking
(Y page 74).
X
Have the key checked at a qualified specialist workshop.
You have lost a key.
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.
The engine cannot be
started using the key.
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 233).
or
X
Jump-start the vehicle (
Y page 236).
or
X
Consult a qualified specialist workshop.
The steering lock is mechanically blocked.
X
Remove the key and reinsert it into the ignition lock. When
you turn
the key, turn the steering wheel in both directions.
Key
71
>> Opening and closing.
Z