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Dear Benzers,

I'm seeking advices about SAM problem.

For the past several months, my car (MB C200K 2007) started to show up some warning messages (e.g tail brake lamp, run flat tyre, ABS & ESP) on instrument cluster. When I check the problem e.g. tail light, they were ok. The warning message appeared intermittently probably once in couple of days.

I took the car to Mercedes authorised dealer for inspection. They advised that the front SAM unit was damaged by water leak. They found water inside the unit and part of it has already corroded. They sucked out the water as much as they can but still could not fix the warning message problem. Then they advised to replace the unit with a new one to avoid any serious problem in future.

Questions:

1) Is this (SAM damage by wataer ingress) is a common problem with Mercedes car?
2) Anyone know if the SAM unit can be repaired instead of replacing with a brand new unit?
4) The car is in full working condition despite the intermittent warning messages. Should I really replace/repair the SAM unit?
3) Mercedes offered 50% discount for brand new SAM unit and 20% off for the labour . Should I grab this offer or look for some other alternative?
4) Any chance for the above mentioned damaged on SAM unit to survive for several more years?

Hope to get some useful comment and opinion regarding this issue.

Thanks guys !!!
 

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W124/230E, W202 C240 stationwagon, W210 E280 facelift
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water ingress can happen if the fuse and relay module covering is not properly closed or secured, once the water penetrated the circuit of the SAM control unit, it is necessary to replace the unit since you will never know when it will fail again, in my opinion I will replace the controller to eliminate this problem once and for all, just have to be sure the covering is close properly at all times.
 

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I have a 2012 C Class with 70K miles. About 5 weeks ago, I went through water during a storm and within 3 weeks, the engine had a hole in it and it had to be replaced. Just had the car back for a week and now I was told that the front SAM needs to be replaced with a cost of $1,095. According to the service department, it could not have been affected from the water or during the changing of the rebuld engine. Just seems a little too close in timing for this to just come up.
Any feedback?
 
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