Mercedes-Benz R350 locked in park mode despite functional brake lights and new batteries on Mercedes-Benz R350

Some Mercedes-Benz R350 owners report experiencing issues with their vehicle being locked in park mode, despite having functional brake lights and new batteries. These problems may stem from a malfunctioning brake light switch that is not detected by the system, even when the lights are operational. Additionally, some owners face challenges related to the shifter assembly, which may prevent the car from shifting out of park mode. Another potential cause is the absence of a CAN signal from the ESP or steering column switch/control module, hindering the release from the park position. To address these concerns, owners are advised to inspect the brake light switch for proper functionality, examine the shifter assembly for visible issues, and diagnose the CAN signal to ensure effective communication within the system. If these measures do not resolve the problem, consulting a certified mechanic or dealership for further diagnosis and repair is recommended.