If the KEYLESS-GO system is not running, the key power elements may be partially or completely discharged. To solve this problem, you must lock or unlock the car using the remote key management feature. Then it is necessary to point the key from the nearest distance to the handle of the driver's door and try again to open or close the car. If this does not work, you need to lock or unlock the car using the emergency key and verify the key power elements. If they're dead, you have to replace them. If the KEYLESS-GO system is not correct, check the key at the Mercedes-Benz TVE station.
