Mercedes-Benz S-Class Operator's Manual page 303

Display messages
Â
Key Not Detected Key Not Detected
(red display message)
Â
Remove 'Start' Remove 'Start'
Button and Insert Button and Insert
Key Key
Possible causes/consequences and M M Solutions
The SmartKey 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.
Secure the vehicle against rolling away (
X
Locate the SmartKey.
X
Press a on the steering wheel to confirm the display
X
message.
Because there is interference from a strong source of radio waves,
the SmartKey is not detected whilst the engine is running.
A warning tone also sounds.
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions.
Secure the vehicle against rolling away (
X
Operate the vehicle with the SmartKey in the ignition lock.
X
The SmartKey is continually undetected.
The SmartKey detection function has a temporary malfunction or
is faulty. 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
Display messages
page 190).
Y
page 190).
Y
301
Z