Mercedes-Benz GLC : SmartKey / Problems with the SmartKey, troubleshooting

You can no longer lock or unlock the vehicle

Possible causes:

• The SmartKey battery is weak or discharged.
• The SmartKey is faulty.

Check the battery using the indicator lamp.

Replace the SmartKey battery, if necessary.

Use the emergency key to lock or unlock.

Have the SmartKey checked at a qualified specialist workshop.

There is interference from a powerful radio signal source

The SmartKey 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.

You have lost a SmartKey

Have the SmartKey deactivated at a qualified specialist workshop.

If necessary, have the mechanical lock replaced as well.