Mercedes-Benz C250 antitheft system malfunction preventing car from starting on Mercedes-Benz C250

Some Mercedes-Benz C250 owners report experiencing issues with the antitheft system that prevent the car from starting. These problems can occur when the system is activated and the correct key is not detected, which triggers the antitheft alarm and disables the engine starting system. Owners are advised to check for warning lights indicating the activation of the antitheft system when attempting to start the vehicle. Additionally, a technician may need to scan the car to diagnose whether the issue is related to the immobilizer system. In some instances, resolving the malfunction may require programming or replacing components associated with the antitheft system. It is recommended to consult a qualified mechanic or dealership for proper diagnosis and resolution to ensure the car starts smoothly again.