E550 Coupe Electrical Problems
Any advice. I'm about to just trade the *$&# thing in on a range rover or bmw.
Possibly you can take it to a different dealership. The skill level of techs at various dealerships varies a lot. A lot of times the diagnosis tree offered by the manufacturers just leads to mass confusion by the techs for anything out of the ordinary.
Aside from that most OEM's have roving experts that can be called in for problems such as yours. I don't know if the dealership has to cough up some bucks to get them and are therefore reluctant to access their help. At four times for the same problem I would think it's time for a skill upgrade.
drove a range rover today. mb said they would give me <$40k for my e550c (loaded, 2010) with 42k miles. gonna get opinions from BMW and RR and let you know. KBB says $45ish.
drove a range rover today. mb said they would give me <$40k for my e550c (loaded, 2010) with 42k miles. gonna get opinions from BMW and RR and let you know. KBB says $45ish.

range rover offered $34k for my car, audi offered $36.5k and BMW offered $37k. range rover came up to $36.5k.
after driving my car for a bit, hesitate to trade it in even with the problems... too fun to drive.

range rover offered $34k for my car, audi offered $36.5k and BMW offered $37k. range rover came up to $36.5k.
after driving my car for a bit, hesitate to trade it in even with the problems... too fun to drive.
Even if the light is not on a read out of the computer may indicate a pending problem. The way it goes with a lot of errors in diagnostic systems these days is the car recognizes a problem but does not report it with a error lamp until the fault is present for a certain time or engine turn on/off cycles. I don't know if your MB is doing this but any oncoming inspection at a dealership will reveal this simply by reading out the on board diagnostic port.
I'd suggest you insist the MB roving expert/experts be present to evaluate your problem before you bring the car in again. You might also ask if the air bag problem is actually a situation which will keep the air bag from deploying or if it is a situation where some parameter is just slightly out of the spec window. If they can't answer the question find another dealer PITA as that may be.
It was an even more serious electrical problem which was shutting the car down and thus stranding them around town. MB was never able to fix the problem and they had to sell it back to MB for what they described as a fair price.
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I got the new 4.4 bi-turbo V8 with 400 HP and 440 Torque. Should be fun to drive. They gave me $37,250 for my 2010 w/ 41,000 miles. MSRP was $73,000, they gave me $3,400 off or so..
I wrote a letter to MB NA and cc'd the owner of my dealer in Atlanta. I asked for $800 for the return of a bike rack I just bought but never used. I feel it's a reasonable request, since I'm waiving the $2k offer.
What a mess
. Oh well, the loaded X5 5.0 beats the ML IMO on power, design, and functionality. And I wouldn't think about getting the Audi Q5. Too small and weak.
Last edited by cmcbenz; Jan 28, 2012 at 01:44 PM. Reason: typo
I got the new 4.4 bi-turbo V8 with 400 HP and 440 Torque. Should be fun to drive. They gave me $37,250 for my 2010 w/ 41,000 miles. MSRP was $73,000, they gave me $3,400 off or so..
I wrote a letter to MB NA and cc'd the owner of my dealer in Atlanta. I asked for $800 for the return of a bike rack I just bought but never used. I feel it's a reasonable request, since I'm waiving the $2k offer.
What a mess
. Oh well, the loaded X5 5.0 beats the ML IMO on power, design, and functionality. And I wouldn't think about getting the Audi Q5. Too small and weak.Whether is is quicker then a ML350 is kind of irrelevant since they are both performance dogs compared to most any decent performance orientated car.
Unless one needs the extra interior room and the all wheel drive they are all slow and fugly.




