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 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:
SAFETY
The CLS550's two sets of lower Latch anchors make child-safety seat
installation a piece of cake. There's no searching or digging for the anchors
since they sit out in the open. Just flip the rubb ...
Changing the set speed
When DSR is activated, the set speed can be
changed to a value between 1 mph and
10 mph (Canada: between 2 km/h and
18 km/h) during the journey.
– To increase or decrease the set speed
in 1 ...
Closing
WARNING
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk lid. Be
especially careful when small children are
around.
...

Solutions
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button.