Mercedes-Benz GLC : Doors / Problems with KEYLESS-GO, troubleshooting

You can no longer lock or unlock the vehicle using KEYLESS-GO

Possible causes:

• The SmartKey functions have been deactivated.
• The SmartKey battery is weak or discharged.

Activate the SmartKey functions.

Check the battery using the indicator lamp.

Replace the SmartKey battery, if necessary.

Use the replacement SmartKey.

Use the emergency key to lock or unlock.

Have the vehicle and SmartKey checked at a qualified specialist workshop.

There is interference from a powerful radio signal source.

The KEYLESS-GO function is impaired by, for example:

• High voltage power lines
• Mobile phones
• Electronic devices (notebooks, tablets)
• Shielding due to metal objects or induction loops for electrical gate systems or automatic barriers

Make sure that there is sufficient distance between the SmartKey and the potential source of interference.