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Problem
Possible causes/consequences and MM Solutions
KEYLESS-GO is malfunctioning.
X
Lock/unlock the vehicle using the remote control function of the
SmartKey.
X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
X
Unlock (Y page 77) or lock (Y page 77) the vehicle using the
mechanical key.
X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the Smart-
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 281).
or
X
Jump-start the vehicle (Y page 282).
or
X
Consult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.
The vehicle is locked.
X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
X
Check the SmartKey battery (Y page 73) and replace it if necessary
(Y page 73).
If this does not work:
X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.
X
Have the SmartKey deactivated at a qualified specialist workshop.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
You have lost the
mechanical key.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
SmartKey
75
Opening and closing
Z
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