Mercedes-Benz GL450 dashboard warning for parking brake release and transmission issue with no resolution on Mercedes-Benz GL450

Some Mercedes-Benz GL450 owners report experiencing dashboard warning lights related to the parking brake release and transmission issues, which can pose safety risks if not addressed promptly. These warnings may indicate problems with the electronic parking brake system, such as rear electronic brake actuators sticking due to corrosion or faulty modules. If the parking brake warning light remains illuminated, it often signifies fault codes that need to be cleared with a shop-level scan tool. Additionally, some owners find that malfunctions in the ABS system or instrument cluster can trigger these warning lights, complicating transmission functionality. A defective brake light switch may also contribute to various dashboard warnings, affecting multiple systems within the vehicle. To resolve these issues effectively, it is advisable to have the vehicle diagnosed by a qualified mechanic or dealership specializing in Mercedes-Benz, as regular maintenance and prompt attention to warning lights can prevent further complications and ensure safe operation. If warning lights persist despite attempts to manually release the parking brake, consulting a professional for a thorough inspection is recommended.