Mercedes-Benz M-Class Operator's Manual page 270

Display messages
268
Display messages
+
Key Not Detected
(red display message)
+
Key Not Detected
(White display
message)
+
Key Detected in
Vehicle
+
Remove 'Start'
Button and Insert
Key
+
Close Doors to
Lock Vehicle
Possible causes/consequences and M Solutions
The KEYLESS-GO 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.
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions.
Apply the electric parking brake.
X
Locate the KEYLESS-GO key.
X
The KEYLESS-GO key is not detected while the engine is running
because there is interference from a strong source of radio waves.
A warning tone also sounds.
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions.
Engage the electric parking brake.
X
Operate the vehicle with the SmartKey in the ignition lock.
X
The KEYLESS-GO key cannot be detected at present.
Change the location of the key with the KEYLESS-GO functions
X
in the vehicle.
If the KEYLESS-GO key is still not detected:
Operate the vehicle with the SmartKey in the ignition lock.
X
The KEYLESS-GO key has been detected inside the vehicle during
locking.
Remove the KEYLESS-GO key from the vehicle.
X
KEYLESS-GO is temporarily malfunctioning or is defective. A
warning tone also sounds.
Insert the SmartKey into the ignition lock and turn it to the
X
desired position.
Visit a qualified specialist workshop.
X
At least one door is open. A warning tone also sounds.
Close all doors and lock the vehicle again.
X
I n f o r ma t i o n P r o v i d e d b y :