Problems with the SmartKey
| Problem | Possible causes/consequences and
Solutions |
| You cannot lock or unlock the vehicle using the SmartKey. | The SmartKey battery is discharged or nearly discharged. Try again to lock/unlock
the vehicle using the remote control function of the SmartKey. Point the
tip of the SmartKey at the driver's door handle from close range and
press the /
button.If this does not work: Check the SmartKey battery
and replace it if necessary. Lock or unlock the vehicle
using the mechanical key. |
The SmartKey is faulty. Lock or unlock the vehicle
using the mechanical key. Have the SmartKey checked
at a qualified specialist workshop. |
|
| You can no longer lock or unlock the vehicle using KEYLESS-GO. | There is interference from a powerful source of radio waves. Lock/unlock the vehicle
using the remote control function of the SmartKey. Point the tip of the
SmartKey at the driver's door handle from close range and press the
/
button. |
There is a malfunction with KEYLESS-GO. Lock/unlock the vehicle
using the remote control function of the SmartKey. Point the tip of the
SmartKey at the driver's door handle from close range and press the
/
button. Have KEYLESS-GO checked at
a qualified specialist workshop.If this does not work: Check the SmartKey battery
and replace it if necessary. Lock or unlock the vehicle
using the mechanical key. |
|
| You have lost a SmartKey. | Have the SmartKey
deactivated at a qualified specialist workshop. Report the loss immediately
to the vehicle insurers. If necessary, have the
locks changed as well. |
| You have lost the mechanical key. | Report the loss
immediately to the vehicle insurers. If necessary, have the
locks changed as well. |
| The engine cannot be started using the SmartKey. | The on-board voltage is too low. Switch off non-essential
consumers, e.g. seat heating or interior lighting, and try to start the
engine again.If this does not work: Check the starter battery
and charge it if necessary.or Jump-start the vehicle.or Consult a qualified
specialist workshop. |
| The engine cannot be started using the SmartKey. | The steering lock is mechanically blocked. Remove the SmartKey and
reinsert it into the ignition lock. While doing this, turn the steering
wheel in both directions. |
| The engine cannot be started using KEYLESS-GO. The SmartKey is in the vehicle. | A door is open. Therefore, the SmartKey cannot be detected as
easily. Close the door and try to
start the vehicle again. |
There is interference from a powerful source of radio waves. Start your vehicle with the
SmartKey in the ignition lock. |
See also:
Derestricting the shift range
Briefly press the selector lever
to the right towards D+.
or
Pull the right-hand steering wheel
paddle shifter.
The shift range is derestricted. ...
Operating audio player or audio media
Audio data from various audio devices or
media can be played, depending on the
equipment installed in the vehicle.
► Switch on COMAND and select the audio
device or medium (see the separat ...
BAS (Brake Assist System)
Observe the "Important safety notes"
section
BAS operates in emergency braking
situations. If you depress the brake pedal
quickly, BAS automatically boosts the braking
force, thus s ...

Solutions
/
button.