2006 S55 AMG not seeing any Sam Module from MKII - Page 2 - Mercedes-Benz Forum
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post #11 of 58 (permalink) Old 05-10-2019, 04:53 PM
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Originally Posted by mpninc View Post
Also forgot to mention that the car will start and run but as I am driving it, it would seem like the ECU would reboot and check everything and start to work and it would continue to do this. Also, my headlight clicks on and off during the day but if it is night t would come on and stay on.
Sounds like when my door control module went bad, my headlights flashed like a cop car
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post #12 of 58 (permalink) Old 05-10-2019, 04:57 PM Thread Starter
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Battery voltage show 12.5V without the engine starting and 14.4V with the engine starting.
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post #13 of 58 (permalink) Old 05-10-2019, 05:02 PM Thread Starter
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here is a more updated video. thanks for everyone help!

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post #14 of 58 (permalink) Old 05-10-2019, 05:45 PM
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You should either keep your headlights on or off. Do whatever you have to, so they can stay in one state while your car is having this problem. The bulb will end up burning out quickly and it's puts a lot of stress on the xenon ballast.

Regarding your problem it sounds like a possible SAM issue or a grounding issue. Have you checked your ground connections? Also have you checked your positive and negative cables on the battery to make sure they are tight and clean?
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post #15 of 58 (permalink) Old 05-10-2019, 07:56 PM
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Check ur junction box under the passenger side carpet/footwell area. Make sure you have full battery power across all 3 fuses/terminals and make sure the positive connections, mainly the bottom 2 right ones are tight.

Then if no problem is found because thats where both underhood fuse boxes are feed, pull ur sams from both underhood fuse boxes one at a time and take em apart and check for water damage/rust inside and on all the pins and make sure all connector plugs are bottomed out and properly locked down
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post #16 of 58 (permalink) Old 05-10-2019, 10:09 PM
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here is a more updated video. thanks for everyone help!

https://youtu.be/9m1oWUi1G0c
Almost certainly the door control module , the cop car headlight flashing is exactly what mine did . The door control module is better known as the power seat switches . They are interconnected with everything. Do one side of your seats not work ? That’s the bad one .

There are two kinds of modules , one for heated seats with three dots and one for heated /cooled seats . That one had 5 dots

Take off yours to check part number and buy the same part number and same side on eBay .
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Last edited by tusabes; 05-10-2019 at 10:17 PM.
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post #17 of 58 (permalink) Old 05-11-2019, 05:57 AM
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Could a poor contact somewhere in the main battery cables and fuses do this?
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post #18 of 58 (permalink) Old 05-11-2019, 11:00 AM
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I would think the whole car would shut down if there was a poor contact with battery cables. His car is just “rebooting” while not dying out

But yes it’s definitely a good idea to pull up the passsnger carpet and check to see if the main battery cable and main fuse connections are rusty , see here :

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post #19 of 58 (permalink) Old 05-11-2019, 02:58 PM Thread Starter
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I pulled the passenger carpet off and tested all the connector and they pass voltage and none of the fuses are blown but i noticed the middle cable fill very brittle like a burnt cable. So noticed while the car is running and i disconnect the cable nothing change. What does that middle cable do?

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Originally Posted by tusabes View Post
I would think the whole car would shut down if there was a poor contact with battery cables. His car is just “rebooting” while not dying out

But yes it’s definitely a good idea to pull up the passsnger carpet and check to see if the main battery cable and main fuse connections are rusty , see here :

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post #20 of 58 (permalink) Old 05-11-2019, 04:18 PM
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You are only giving partial information to the test we suggest
Please report your findings about your seats, do both side power seat controls work ?
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