SL55/63/65/R230 AMG: Help, Electronics going Haywire
Thread Starter
Newbie
Joined: Jan 2022
Posts: 4
Likes: 0
From: Union City,CA
04 SL 55
Help, Electronics going Haywire
Hello everyone,
I am new to the forum. I am need of some help. I own a 04 SL55, after the car sat outside through rain for a week, I went to start the car and it started fine. I did however discover that my gauges were not working, my car was cycling through its ride heights on its own, and the car will not shift out of park. As the car runs it cycles through different warning lights on my dashboard, car keeps going up and down. I thought maybe it was a bad rear battery, I went ahead for good measures put a new one in but no change. I also let the car run, went to the rear and disconnected the rear battery but no change at all in the electronics. Its like the car is not acknowledging the rear battery power. Has anyone experienced this before. I don't even know how I would get it onto a flat bed to get it to a shop.
Thanks
Mario Garcia
I am new to the forum. I am need of some help. I own a 04 SL55, after the car sat outside through rain for a week, I went to start the car and it started fine. I did however discover that my gauges were not working, my car was cycling through its ride heights on its own, and the car will not shift out of park. As the car runs it cycles through different warning lights on my dashboard, car keeps going up and down. I thought maybe it was a bad rear battery, I went ahead for good measures put a new one in but no change. I also let the car run, went to the rear and disconnected the rear battery but no change at all in the electronics. Its like the car is not acknowledging the rear battery power. Has anyone experienced this before. I don't even know how I would get it onto a flat bed to get it to a shop.
Thanks
Mario Garcia
MBWorld Fanatic!
Joined: Sep 2007
Posts: 1,481
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95 SL600
Something is leaking into either front fuse boxes (Sam)) or into the rear fuse box. Not good. The first place to check is the drivers side SAM cover, it may not be on there correctly. Regardless yuu need to find it.
Thread Starter
Newbie
Joined: Jan 2022
Posts: 4
Likes: 0
From: Union City,CA
04 SL 55
I agree it is my one of my SAM modules. The front two under the engine hood (Driver side and Passenger side) are bone dry but I am being made aware that there may be one behind the passenger seat in the under the storage cargo and in the trunk. Does anyone know there the one in the trunk it?
Thanks,
Mario
Thanks,
Mario
Thread Starter
Newbie
Joined: Jan 2022
Posts: 4
Likes: 0
From: Union City,CA
04 SL 55
I agree it is one of my SAM Modules. The front two under the engine hood (Driver and Passenger side) are dry and dusty, but I am being made aware that there may be one behind the passenger seat under the storage cargo and in the trunk. Does anyone know where the one in the trunk is?
MBWorld Fanatic!
Joined: Sep 2007
Posts: 1,481
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95 SL600
There isn’t one in the trunk. You are going to have to start pulling up carpet to see where it’s wet, and get the car into a dry place. These electronics and wet is very costly and time consuming.
Thread Starter
Newbie
Joined: Jan 2022
Posts: 4
Likes: 0
From: Union City,CA
04 SL 55
I am sure its the one behind the passenger seat. My rear battery had a lot of condensation on it. Does anyone if these are plug and play?
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MBWorld Fanatic!
Joined: May 2009
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From: Santa Clara, Ca
2003 SL55 / 2002 SLK32
Using a code reader that can read mercedes specific codes ... read the codes. You are going to have to sooner or later (to clear them if nothing else). Might as well do it sooner and save some time.
Chris
Chris
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MBWorld Fanatic!
Joined: May 2009
Posts: 1,187
Likes: 239
From: Santa Clara, Ca
2003 SL55 / 2002 SLK32
The BCM is located near the trunk battery and susceptible to leakage from the adjacent rear-of-top drain-tube (look for kinked/blocked/disconnected tube in the right-forward trunk area).
Chris
Chris
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Joined: Jul 2010
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SL55, S500
Where is the car wet? I had some leakage a few months back when we got hit with the hurricanes. I had water pool under the passenger seat and my central gateway got some corrosion, I had the shop replace and clean everything. Works perfectly now.
