Exterior Lighting Problems of Mercedes Benz R350

Mercedes Benz R350 owners have reported 5 problems related to exterior lighting (under the exterior lighting category). The most recently reported issues are listed below.

1 Exterior Lighting problem of the 2008 Mercedes Benz R350

Failure Date: 09/15/2017

Electrical wiring around headlamps is crumbling and exposing large lengths of bare wires, with up to about 6" of copper wiring exposed in the engine compartment. I replaced a burned out halogen headlamp in June, the other one in August, and the first one went out again about a week ago (and this rate of headlamp replacement is more or less typical; I keep two spares in my car at all times, as burnouts are so frequent). The bare wires may be contributing to the extremely short bulb life and could also cause arcing and potentially an engine fire. Although an engine fire has not happened yet, the arcing is extremely likely. However, the area where this occurs is so has extremely restricted access and direct vision into and around the headlamp mount is not possible. Only upon inserting my iphone into the available space was I able to see the extent of the wiring insulation deterioration. Virtually all of the segmented insulation on the brown wire flaked off on my fingers when I installed the new headlamp. Although the brown wire was most affected, the yellow wire also shows significant signs of deterioration. I worked in the automotive industry for over ten years as an oem supplier and vehicle manufacturer and such defects as this tend to indicate inferior materials or manufacturing processes. Materials this fragile should have been caught in the qa process and returned to the supplier before installation on the assembly line.

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2 Exterior Lighting problem of the 2007 Mercedes Benz R350

Failure Date: 11/15/2014

Hissing noise,leaning to the right passenger side, power window bottons are break easily,emergency brake handle came off/break easily, and trunk stopped working. If this vehicle lean more low to the ground, this could cause serious accident. This is not safe to drive, do not put your children in this type of vehicle. We regreted getting this vehicle. People do your research, this vehicle is expensive to fix. Too many defects! it's horrible!.

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3 Exterior Lighting problem of the 2006 Mercedes Benz R350

Failure Date: 12/20/2011

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 drving 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.

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4 Exterior Lighting problem of the 2006 Mercedes Benz R350

Failure Date: 11/10/2010

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.

5 Exterior Lighting problem of the 2006 Mercedes Benz R350

Failure Date: 05/15/2009

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.


Other Common Exterior Lighting related problems of Mercedes Benz R350

Problem Category Number of Problems
Exterior Lighting problems
5
Brake Light problems
2
Tail Light Switch problems
2
Hazard Flashing Warning Light Unit problems
1


R350 Service Bulletins
R350 Defect Investigations