Mercedes-Benz S500 ABC system failure to lift on driver's side despite complete replacement on Mercedes-Benz S500

Some Mercedes-Benz S500 owners report experiencing issues with the ABC system failing to lift on the driver's side, even after complete replacement. Common problems include high pressure line failures from the ABC pump to the valve block, which can lead to system malfunction if faulty or leaking. Additionally, a malfunctioning strut travel sensor may cause intermittent issues with the system reaching operating pressure, necessitating repair or replacement. Owners are advised to take their vehicles to a dealer or workshop equipped with a Mercedes STAR diagnostic system to obtain diagnostic codes that can pinpoint specific issues. Communication problems within the computer-controlled ABC system, particularly in the valve block commands, can also prevent proper lifting on the driver's side. In severe cases, complete suspension failure may occur, posing significant safety risks and requiring prompt attention. Furthermore, ensuring the system is turned off correctly is essential to avoid complications such as a flat suspension. Consulting with a qualified technician familiar with Mercedes-Benz ABC systems is recommended for accurate diagnosis and resolution of these issues.