Mercedes-Benz SL550 massage function not working, left seat side valve block needs replacement on Mercedes-Benz SL550

Some Mercedes-Benz SL550 owners report experiencing issues with the massage function, often linked to leaks in the lines, particularly when the driver seat still has problems despite repairs made to the passenger seat. Additionally, some owners find that checking the 30 AMP fuse located in the fuse box on the left cockpit side can be beneficial, as removing and reinstalling it may help reset the system. There are also reports that the PSE pump may require coding for the multi-contour seats, which involves variant coding in DAS. Owners have noted that a blank screen when attempting to activate the massage function could indicate an airline leak between the pump and seat, a common issue that may lead to pump failure. Furthermore, known seat problems include damage to the pipe under the seat, issues with the PSE pump, or complications with the tank inside the rear wing. Since each seat has its own electronic control unit (ECU), owners may find that while one seat has issues, the other may still function, except for specific features like the seat back side support and dynamic function. Addressing these potential issues is crucial for effectively diagnosing and resolving the massage function problem.