Mercedes-Benz S500 center lock and trunk soft close issue resolved by reattaching vacuum line and replacing blown fuse on Mercedes-Benz S500

Submitted by Hisham1 · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz S500 owners report experiencing issues with the trunk soft close and center locking system, often due to a leaking pneumatic module or a blown fuse. These problems can prevent the trunk from closing or locking correctly, but reattaching the vacuum line associated with the soft close mechanism can help restore functionality. Additionally, owners may encounter faults with the central locking system, such as the key fob failing to unlock or lock the doors, which can often be resolved by resetting the system in under two minutes. If these features are malfunctioning, replacing a blown fuse can also be an effective solution to restore proper operation. By addressing these components promptly, S500 owners can efficiently resolve these issues and avoid further complications.

2 people reported this problem
1 comment
Schedule Repair

Mercedes-Benz S500 vehicles with this problem

1 model year affected
Average mileage: 789,413 miles
(789,413 - 789,413)

Search for another problem

RepairPal Car Genius

Ask our experts about your Mercedes-Benz.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

 Auto Repair Expert Auto Repair Expert

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday

Call Our Experts