E-Class (W211) 2003-2009

Help ! KeyLess go problem after Front SAM Replacement

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Old May 20, 2017 | 08:29 AM
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Mercedes SLK230 R170 & E55 AMG W211
Help ! KeyLess go problem after Front SAM Replacement

Hi guys

I'm experiencing a strange problem on my '04 E55, and any kind of help will be appreciated.

The story : few months ago, my front right turn signal stopped to work; first I thinked about the headlight, but after some search i found that was the front SAM module needed a replace. So I bought the same ref (A211 545 40 01) new OEM part, and dealer replaced and reprogrammed it.

The turn signal is back and everything works, yeah, except now i can't use the start/stop function anymore. If I use the key and turn it no problem, no error. The keyless open/close is working too. But If i use the start/stop function on the selector lever, i got a bunch of errors, for example ESP, ABS, and the display tell me that i'm not on P or N in red background, so the car don't start, and become absolutely locked (can't move the selector lever, can't turn the key if i put it in, etc..) and need to unplug the battery to be able to reuse it. Please, tell me one of you have any idea of what it can be, i'm starting to pull my hairs with these electronics cars, that getting me mad.

Don't hesitate to ask me more if my english is bad, sorry for that.

Last edited by Florian Siles; May 21, 2017 at 09:37 AM.
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Old May 20, 2017 | 03:03 PM
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Hello Plutoe
Thanks for your reply. I'm not sure to clearly understand what you tell me. Do you mean the dealer is missing some experience ? If so I can't agree with you because he takes care of many Mercedes and AMG vehicles, slightly rare and dearer than mine, and he is very aware of the issue. Actually he's searching a possible cause, and will come to my home to try fix it freely (he is living at 1 hour from here), which leads me to think that he is involved and not just "fend for yourself". Is it not conceivable that a relay, for example, is defective or something more subtle that happens rarely ?
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Old May 20, 2017 | 04:26 PM
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Maybe dealer was not the good word. He's not selling any car, this is just an AMG specialist garage and he's not living in moutains, but it's rather me who lives far from the city. Relay was an example, I also doubt it but I do not exclude the idea either.
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Old May 21, 2017 | 09:36 AM
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Mercedes SLK230 R170 & E55 AMG W211
According to this :
http://bayhas.com/mercedes/cl215/con..._startstop.htm

And this :
http://www.autogenius.info/mercedes-...e-box-diagram/

I tested the relays at kN and kP (Circuit 15) at the engine driver SAM, both are in good condition. So, what about a bad mechanist coding, is that just possible ?

Last edited by Florian Siles; May 21, 2017 at 09:39 AM.
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Old May 31, 2017 | 04:54 PM
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Just changed the brake light switch without success. To be continued..
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