Mercedes-Benz C-Class, Owner'S Manual

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Key
Display messages
Possible causes/consequences and M M Solutions
Â
Key does not Key does not
belong to vehicle belong to vehicle
You have put the wrong key in the ignition lock.
X
Use the correct key.
Â
Replace key Replace key
The key needs to be replaced.
X
Visit a qualified specialist workshop.
Â
Change key batter‐ Change key batter‐
ies ies
The key batteries are discharged.
X
Replace the batteries (
Y
page 94).
Â
Key not detected Key not detected
(white display mes-
sage)
The key is currently undetected.
X
Change the location of the key in the vehicle.
If the key still cannot be detected:
X
Insert the key into the ignition lock and turn it to the desired
position.
Â
Key not detected Key not detected
(red display message)
The key is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle to prevent it from rolling away (
Y
page 207).
X
Locate the key.
X
Press a on the steering wheel to confirm the display mes-
sage.
350
Display messages
On
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