Mercedes-Benz S430 Keyless Go not starting issue, dealer suggests new door handles needed on Mercedes-Benz S430

Submitted by 2004 MB · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz S430 owners report experiencing issues with the Keyless Go system not starting, which can be attributed to several factors. These include a lack of power reaching the starter motor, potentially due to a damaged ignition switch, which prevents the vehicle from turning over. Additionally, some owners encounter problems with a faulty or low key fob, necessitating either a replacement or reprogramming of the existing fob. Furthermore, issues with the Keyless Go system itself, such as a malfunctioning Pushbutton Ignition, can also hinder the starting process. Battery-related concerns, including a weak car battery or intermittent electrical faults, may affect communication between the key fob and the car's Electronic Ignition Switch (EIS). It is advisable for owners to consult a Mercedes-Benz dealer for specialized diagnostic tools and to address these common issues before considering more extensive repairs like replacing door handles. Understanding these potential causes can assist in making informed decisions regarding necessary repairs.

0 people reported this problem
0 comments
Schedule Repair

Mercedes-Benz S430 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