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So the battery is good. I had an alternator issue. It wasn’t charging sporadically 1213 sometimes 14 and noisy so I changed that everything is much quieter now it’s charging 14.3.
So if the car sits overnight, battery is dead I removed the fuse for the interior lights and other courtesy things that did help next day was dead. I removed the fuse for the radio next day. The battery was dead well today I noticed the side lamps on the fenders left and right are not on and I’m not receiving power.
Hopefully that’s a clue. Now I’m trying to trace any information on where that gets power and how to find it. I’m looking for schematics when I looked at my fuse chart it says electronic. I don’t know what that means. Fuse for a parking lamp or things like that.
I mean, it’s a good sign because both lamps are out which means it must be a short somehow and I can get close. Any help will be really grateful of locating where these wires get their power from so I can follow the wires back.
How old is the battery? Are you sure the bad alternator didn't damage it? Have you tried disconnecting the battery to see if it holds its charge overnight even with no load?
Run a tester across every fused link at the boxes and see whats drawing power. Sometimes the SOS button shorts and stays open and then runs the battery down, other times its other stuff.
Hi so I’m gonna answer these both questions at the same time the battery has been tested. It’s at 76% and the other telltale sign of it’s not the battery is you jump it with a car for about 20 seconds and she starts right up it means it’s dead enough to Make a click, but she’s only requires a little bit of a charge.
Now the other question the SOS it’s not that because I noticed last night that the side marker lights, both sides are not working nor do they have any voltage not good because that gets its voltage from the Sam. This is where you run into aggravation.
No, apparently my son wasn’t paying attention. I didn’t see it saying that side marker left and right we’re out but I’ve got a trace that back.
Now I did do some reading and it does say that when there’s a short ECU automatically cuts power to that device if that is true then why is it draining power for my battery.
So basically what’s going on as if I left my side marker lights on overnight that’s why I’ve gotta figure out how to stop that from happening
i’m hoping I don’t have to change the ECU. I’m trying to find some schematics to see how this system works because when you look up side marker lights fuses, it says electronic.
So I guess that means it goes directly to the Sam
I’m looking at a schematic and it says that the parking lights and headlights going to a front Sam control module with fuse and relay relay module left rear of engine compartment. Now do they mean left rear when you’re standing in front of the car or left rear when you’re inside the car cause if you’re standing in front of the car, left rear of engine would be behind the battery. Now I did hear some things about something there, but I know from a fact that the Sam is to the right with all the fuses. Am I missing something? These are the parking lights, though I can’t find the side marker lights on a schematic. I see low high park and turn, but I don’t see anything about a side marker lights schematic
Well, that was a wild goose chase before I took the sandbox out I triple checked, and upon doing a little cleaning, the left side marker light is now working with a different bulb, but that bulb worked in my other CLK I don’t know. So the right side marker light is out, but I don’t think that was the problem thank goodness I think we might be back at the alternator. That’s the only thing that’s been replaced now. Is it possible that a bad alternator can charge but also cause a short probably, I’m gonna disconnect it let it sit overnight And if the car starts right away, then we know it’s the alternator
So I’m disconnecting the two wires I called them wires going to the back of the alternator. One is a plastic clip and the other one is a seems to be a hot wire obviously from the battery.
So I’m gonna let that sit overnight and if the car doesn’t start then somehow there’s a problem with the alternator causing a short. It’s the only new thing that I’ve installed that after I installed this started happening so I’m gonna start there first. I’m gonna use an old meter and figure out what the current voltage in the battery and then check it in about five or six hours.
So here’s a fun little update so before I did anything to the alternator, the battery was fully charged at 12 V after about two hours 2 1/2 hours dropped down to nine
I disconnected the alternator at 12 o’clock. The voltage was 11.99. I know what a coincidence well at 1:30. It is at 11.75. So I’m curious to see at 6 o’clock today what it’s at I think the main thing is by tomorrow does it stay above 11?
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