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Old 01-03-2012, 03:55 AM   #1
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SAM unit problem

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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Old 01-03-2012, 08:50 PM   #2
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New sam unit merc vito2008 180+vat less 50 percent sounds like a bargain.it maybe an upgraded unit may not be. Some sam units are a bit suspect used sams 60~120 from breakers or ebay. Unit splits into fuses and relays on top pcb clips on the bottom.can be fixed by good auto electrician.new unit may need reprograming.
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Old 02-03-2012, 01:31 AM   #3
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Total price to pay for part with 50% discount and labour with 20% discount is 355. Full price should be over 600. It is for Mercedes C200K Sport 2007.
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Old 02-03-2012, 12:57 PM   #4
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Might be the best option parek i found a used unit yesterday but theres a slight difference in the sam.fitting a new unit next week headbash.
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Old 02-03-2012, 10:52 PM   #5
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I spoke to mb dealer today about SAM unit. A bit of good news is that they don't apparently need to be coded when new one is fitted.
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Old 03-03-2012, 01:27 AM   #6
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Quote:
Originally Posted by stevieraylamb View Post
Might be the best option parek i found a used unit yesterday but theres a slight difference in the sam.fitting a new unit next week headbash.

Stevieraylamb, can I know the quoted price ( part + labour + VAT ) and which Merc model ?

Last edited by pareq; 03-03-2012 at 01:29 AM.
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Old 03-03-2012, 01:31 AM   #7
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Quote:
Originally Posted by flobots View Post
I spoke to mb dealer today about SAM unit. A bit of good news is that they don't apparently need to be coded when new one is fitted.
Flobots, do you thinks this applicable to my car (C200K Sport 2007) ?
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Old 03-03-2012, 02:38 AM   #8
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That should keep the bill down a bit flobots will have a bash at fitting new unit in next few days.
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Old 03-03-2012, 02:41 AM   #9
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Pareq new sam 180+vat didn,t get a price for fitting.
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Old 03-03-2012, 05:08 PM   #10
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Just purchased a new sam from merc manchester 186.66 kats & kittens including vat. How goods that 15per cent discount, off to the pub.bannana.
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Old 03-03-2012, 09:25 PM   #11
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Hi pareq

Don't see why it would be different between model for coding the same unit.

Steve I'd leave the pub until after you'd fitted the Sam. To either celebrate or drown your sorrows. Fingers crossed mate.
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Old 05-03-2012, 04:27 PM   #12
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Right here we go disconected the earth strap, took ecu out of the way, undid 4 screws holding fuses & lighting sam unit undid screw holding sam inplace, pulled sam out, down & to the left, fitted new sam, put everthing back in reverse order.started vito no lights & cluster displaying handbrake problelm. Refited old sam back in everthing back as it was before all lights working except fog & main beam.booked vito in for reprograming on wednesday..
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Old 05-03-2012, 04:57 PM   #13
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Quote:
Originally Posted by stevieraylamb View Post
Right here we go disconected the earth strap, took ecu out of the way, undid 4 screws holding fuses & lighting sam unit undid screw holding sam inplace, pulled sam out, down & to the left, fitted new sam, put everthing back in reverse order.started vito no lights & cluster displaying handbrake problelm. Refited old sam back in everthing back as it was before all lights working except fog & main beam.booked vito in for reprograming on wednesday..

But good attempt Steve. Maybe just no luck for this time. By the way, you book for reprogramming at dealer or independent garage?
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Old 05-03-2012, 05:14 PM   #14
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it going to a good indiependent pareq they have all the diagnostics taking the earth strap off turn the drl,s off so it was not all bad.
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Old 07-03-2012, 06:59 PM   #15
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Here we go again guys took vito had new sam fitted.did not need coding you were dead right flobots. Even with new sam fitted still no mainbeam or fogs looking now at the loom
or maybe relay.
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