Mercedes-Benz S500 airbag light stays on, potential wiring connector or weight-sensing mat issue requiring dealer diagnosis on Mercedes-Benz S500

Submitted by CheesyID · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz S500 owners report experiencing issues with the airbag light staying on, which may indicate various problems within the airbag system. These issues can stem from a faulty sensor that triggers the warning light, as well as electrical or wiring problems that could prevent airbags from deploying in a collision. Additionally, a malfunctioning seat belt pretensioner detected by the vehicle's computer may also cause the airbag light to illuminate. Some owners have encountered problems with the SRS computer, necessitating advanced testing of the electrical circuits and wiring for proper diagnosis. Due to the complexity of these systems, it is recommended that owners seek a qualified mechanic or dealer for a thorough inspection and resolution of the issue to ensure the safety of vehicle occupants.

0 people reported this problem
0 comments
Schedule Repair

Mercedes-Benz S500 vehicles with this problem

0 model year affected

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