definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
25,022 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Mercedes-Benz SL500 electrical problems

electrical problem

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2004 Mercedes-Benz SL500 Owner Comments

problem #3

Aug 122010


  • 33,243 miles


The contact owns a 2004 Mercedes Benz S500. While driving 65 mph he started to smell an electrical fire and continued to drive to his destination. After arriving to his destination he noticed that everything electrical in the rear of the vehicle was no longer working. The vehicle was towed to an authorized dealer. The dealer advised him that the drain hole for the air conditioner had filled the floor board with water. The dealer replaced the transponder module and the fuse box since the transponder melted during the failure. The failure mileage was 33,243 and the current mileage was 33,300.

- Naples, FL, USA

problem #2

May 172008


  • 37,823 miles
A complete shutdown of the electrical system occurred after a rain. As a result I am unable to drive the car. Mercedes authorized mechanic cites "air intake at blower intake area was inverted at installation from the factory". the car is in process of being repaired. A complete overhaul of the electrical system will have to be performed. The Mercedes dealer calls it "water intrusion".

- Washington, DC, USA

problem #1

May 192004


  • 4,000 miles
While driving vehicle lost power. The engine continued running, but there was no power brake or power steering. Vehicle was towed to the dealership, and had been there for 3 weeks, but they could not identify the cause of the failure. A diagnostic test was performed, but no failure code was found. Dealership was awaiting a factory representative to inspect the vehicle. This problem could be attributed to an electrical failure.

- Moscow, PA, USA

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