We thought that our car was burning out the rear bulbs really fast or that there was a short. Turns out that when we took it in for repairs to the balance shaft, we found out that there is indeed a short in the harness. Apparently, the C-class is not the only model having this problem.

- Mooresville, NC, USA

Rear light modules (tail, reverse, brake, signal) keeps on failing. Dealer quotes initially $200 to fix/rewire but then goes up to $800 to replace ECU. This is frustrating as this is driving hazard, owners are left without much choice. I have seen multiple complaints of the same issue so mb should already know that this problem exists and be honest upfront about it. I hope nobody gets hurt if the lights fail while driving this model/brand.

- Irving, TX, USA

Tail lights does not illuminate, just the substitute bulbs. I changed out all the bulbs but still no stop, tail lights. Fuses all good.

- Lawai, HI, USA

On my 2006 Mercedes Benz R350, the rear brakelights and taillights regularly fail to eliminate. The lights are very inconsistent and when they fail a back-up substitute light comes on. A message appears on the dash indicating that the substitute lights are on. After changing the bulbs numerous times, I was told by a mechanic at Mercedes that the contact may be worn out.

- Wheatley Heights, NY, USA

The contact owns a 2006 Mercedes Benz R350. The contact stated that when starting the vehicle, the taillights failed. The exterior light warning light was also illuminated, indicating that the brake lights were nonfunctional. The vehicle was taken to the dealer who repaired the wiring harness at the contacts expense. The manufacturer was contacted who offered no assistance. The failure mileage was 33,106. Updated 02/10/11 updated 02/22/11

- Rockville, MD, USA

The contact owns a 2006 Mercedes Benz R350. While driving approximately 55 mph, the contact stated that the brake light would not turn on. There was a warning light that indicated that they did not function. The vehicle was taken to an authorized dealer who stated that the problem was associated with a wiring problem. The vehicle had not been repaired. The failure mileage was 46,000.

- Sand Springs, OK, USA

Our 2006 R350 had all the tail lights burn out at the same time resulting in a safety issue. There appears to be a common issue with this model and year with a wire harness that controls the rear brake lights. When this harness fails the tail lights stop working. Mercedes knows about the issue and has a tsb on it, but will not cover repairs if the vehicle is not under warranty. There are multiple complaints on online Mercedes forums regarding this defect.

- Portland, OR, USA

Headlamps shine too close to car. Only shine 40-50 feet out to the front and at night, especially in rain, you absolutely cannot see the road or hazards in it, such as deer.

- Omaha, NE, USA