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Mercedes-Benz R-Class Electrical Problems

23 messages,  Last post on Jan 15, 2009 at 4:46 AM

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What is this discussion about? Mercedes-Benz R-Class, Electrical, Wagon

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#20 of 23 Sunroof glitches and other problems by diecastaussie Nov 23, 2008 (11:38 pm)
I'm from Australia and this is my first post - I have a 2006 R350 which I purchased 7 months ago from a Mercedes Benz dealer. It is a 6 seater with "touring pack" which means that it has the removable console in between the 2nd row seats. I love the car, it has a couple of very annoying electrical bugs - thankfully not the battery draining issues that I have read about elsewhere on this forum. Firstly the 1 touch auto close on the sunroof doesn't work. When I use this feature the roof almost closes the reverses to a half open position. If I touch the button again it will then close fully. It will also close fully if I hold the button or if I use the key fob from outside the vehicle. So far the dealer has replace the wind deflector and the control module but the fault persists, the dealer is now saying that the rails may be warped and wants to changeover the entire sunroof cassette. Anyone else experienced this problem? Secondly, the auto light switch appears to have a mind of its own, sometimes turning the headlights on in the middle of the day in bright sunlight or refusing to turn the lights on at dusk or in low light conditions such as very heavy rain. The dealer has replaced the optical sensor but the fault persists. Finally, the front parking sensors seem to go crazy on hot days often emitting continuous tone and full led signal for several minutes for no apparent reason. This only affects the righthand side of the vehicle. Dealer says he cannot duplicate the problem. I would very much appreciate any advice or information regarding these annoying faults which spoil an otherwise excellent vehicle.
#21 of 23 Dang was hoping that the 08's were better! by watkinst Dec 18, 2008 (11:36 am)
Looking at 08 Rclass CDI's - anyone with the CDI 08 experiencing these issues? Guessing its all the same stuff just a different engine
#22 of 23 Re: Lighting problems [james3686] by StarTraveler Jan 15, 2009 (12:38 am)
Replying to: james3686 (Nov 16, 2008 2:10 pm) Hi James, Did you ever find out what was going on with your tail lights? My R500 does the same thing. Also my horn has gone out. I'd feel silly if I took it in and someone tightened one screw and charged me $300. I'd love to know what was done to fix it.   Thanks! Don Replies to this message: james3686 (Jan 15, 2009 4:46 am)
#23 of 23 Re: Lighting problems [StarTraveler] by james3686 Jan 15, 2009 (4:46 am)
Replying to: StarTraveler (Jan 15, 2009 12:38 am) Don     Took the car to the local Benz dealer, they were kind enough to fix it free of charge, to me that's indication that they were having problems on many of the cars. If I understand the fix, it has something to do with the light socket making contact to the tail light housing, or lack of making contact. 50,000.00 miles seems to be the magic number, under that and they make a free fix. Spoke with another R350 owner that had the same problem with the tail lights. Can't help you with the horn problem. Hope this is of some help. Take care & travel safe

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