Mercedes-Benz R-Class Owner's Manual page 279

Practical advice
Display messages
Display messages
I
Key not detected
I
Key not detected
I
Key detected in
vehicle
I
You need a new key
I
Pull starting but-
ton out then insert
key
X
inoperative Bat-
tery weak
X
inoperative Refuel
276
Possible cause/consequence
The KEYLESS GO* key is not detected
while the engine is running, due to radio
interference.
The KEYLESS GO* key cannot be detec-
ted.
The KEYLESS GO key* has been detected
in the vehicle during locking.
The key no longer functions.
Continuously unable to detect the KEY-
LESS GO key*.
The battery voltage is insufficient. The
auxiliary heating/ventilation* has
switched off or cannot be switched on.
There is insufficient fuel in the fuel tank.
The auxiliary heating* cannot be switched
on.
Possible solution
Stop the vehicle. Pay attention to the traffic
X
conditions as you do so.
Operate the vehicle using the key in the ignition
X
lock if necessary.
Change the location of the KEYLESS GO key*
X
within the vehicle.
Operate the vehicle using the key in the ignition
X
lock if necessary.
Remove the KEYLESS GO key* from the vehi-
X
cle.
Visit a qualified specialist workshop.
X
Operate your vehicle using the KEYLESS GO*
X
key in the ignition lock.
Visit a qualified specialist workshop.
X
Drive for a longer distance.
X
The battery is being charged. The auxiliary
heating/ventilation* is reactivated as soon as
there is sufficient battery voltage.
Refuel at the nearest filling station.
X
* optional