Issues electrical - Mercedes-Benz Forum
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post #1 of 11 (permalink) Old 06-13-2019, 04:58 PM Thread Starter
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Issues electrical

2006 S 600
recently had battery issues had to jump car from passnger side floor board area because battery was completely dead keys in the trunk "comedy of errors" Any way Replaced battery cranks up and runs just fine.

However when I open the door no lights come on inside the car and the entire dash is completely black to include radio and Nav no door chimes nothing.
Driverside door panel is dead as well no lock window heat etc.
In addtion the wipers dont work now either. Oddly enough passenger side control function as normal Check fuses replaced a total from 5 to 20 amps.

Perplexed any ideas on what could be wrong ?????
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post #2 of 11 (permalink) Old 06-13-2019, 05:03 PM
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Did you check the fuses behind the hidden panel in the right end of the dash?

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post #3 of 11 (permalink) Old 06-13-2019, 05:07 PM
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This car has a very complex electrical system, when you jumped it from the front I think you killed the front SAM. I have done this to the rear SAM. We can’t jump these cars without harming them.
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post #4 of 11 (permalink) Old 06-13-2019, 05:44 PM Thread Starter
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No idi not check that location but i did check under the passenger seat. These fuses are ok as well in the hidden area
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post #5 of 11 (permalink) Old 06-13-2019, 05:45 PM Thread Starter
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alas SAM do you know where its located
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post #6 of 11 (permalink) Old 06-13-2019, 07:02 PM
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Quote:
Originally Posted by Jv Lewis View Post
Check fuses replaced a total from 5 to 20 amps.

Perplexed any ideas on what could be wrong ?????
Were any of the fuses blown?

Connect stable power supply to battery, connect scanner and run "Quick Test". Post results.

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post #7 of 11 (permalink) Old 06-13-2019, 07:33 PM
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Originally Posted by Jv Lewis View Post
alas SAM do you know where its located
I think you two under the hood for motronic and dash interior. Both left and right.

I blew a fuse and my car would not even start back up at the gas pump. I found the fuse and all was good.
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post #8 of 11 (permalink) Old 06-13-2019, 11:47 PM
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Hi,

I think that if you are lucky you have blown a pre fuse, more likely multiple modules due to feedback.

You see, a Front or Rear SAM does not cause no Cluster.

FWIW, maybe this will help others, the procedure in your case would have been connect jump leads, open trunk using door switch / trunk handle, then actually jump start the vehicle from the Battery Terminals.

HTH,


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post #9 of 11 (permalink) Old 06-14-2019, 04:34 AM
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The only thing running under the passenger floor board is the SAM power supply. It's 12v and relatively big, and I think, as others have said, that you've overloaded the SAMs with all that current. It wasn't designed for jump starts, it powers the SAMs.

If you're very lucky, you blew the 100A pre-fuse in the trunk. On the right side of the trunk there is a big fuse, and I think the SAM power supply is fed by that. You may have blown that fuze. Pull the carpet/liner back and on the right side, forward of the battery, under the hinges for the lid, and mounted on the inside of the right rear wheel well is that pre-fuse. Easy to see if it's blown. Used (eBay) are available, new is quite pricey.

Check the prefuse under the front carpet as well. Same capacity, same chance of overload.

By the way, when looking at these things, the squiggly conductor is the fuze. There is a gap in the conductor, visible through a hole, that looks like a blown fuze, but it's not. I think it's a troubleshooting thing - bypass the fuze through that hole for troubleshooting...

Take a look here for pre-fuse information: https://w220.ee/Fuses#Prefuses

As I said, if you're lucky, that's what happened...
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post #10 of 11 (permalink) Old 06-26-2019, 06:10 AM Thread Starter
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Update Prefuse IN REAR OF TRUNK WAS DEFINITELY BLOWN THANKS FOR THAT TIP. i
DID RECEIVE AND INSTALL NEW PREFUSE. unfortunately THIS DID NOT SOLVE ALL OF THE PROBLEMS.
I checked all of the fuses again with the schematic to ensure that i have the right fuse sizes in the correct locations to include another fuse panel in the passenger side of the dash. I do not have any power to the driver side door functions, interior lights do not come on when door is opened, wipers do not work and the entire dashboard console is black to include radio temp controls and the like. Oddly i do have power to the passenger door. The car start up runs drives but i still cant get scanner to pull codes. Any ideas on what is wrong?
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