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This first started when I went out and I went in reverse and it turned off , all the lights were on and the engine wasn’t on .
it happened again when I was coming home from work but I let it rest for 2 mins and cranked it and it had some trouble but it eventually started . And recent I went to start my car and it cranked but a weird noise in my engine started and then it smelt like smoke . Not too long on my screen it said engine will turn off in 3 minutes . So I took out my keys and was shocked . I open my hood and there’s smoke coming out of it . It was dark at the time so I couldn’t identify where it was coming from . I go to start my car and it won’t crank .i turn it to position one , it works , I turn it to position 2 all the lights pop up , it works but as soon as I try to crank it nothing happens !! I changed the battery , I changed the alternator . Before I change the starter I want to know if it could be something else ?
This first started when I went out and I went in reverse and it turned off , all the lights were on and the engine wasn’t on .
it happened again when I was coming home from work but I let it rest for 2 mins and cranked it and it had some trouble but it eventually started . And recent I went to start my car and it cranked but a weird noise in my engine started and then it smelt like smoke . Not too long on my screen it said engine will turn off in 3 minutes . So I took out my keys and was shocked . I open my hood and there’s smoke coming out of it . It was dark at the time so I couldn’t identify where it was coming from . I go to start my car and it won’t crank .i turn it to position one , it works , I turn it to position 2 all the lights pop up , it works but as soon as I try to crank it nothing happens !! I changed the battery , I changed the alternator . Before I change the starter I want to know if it could be something else ?
I’m hearing it could be the the solenoid or the fuse or the fuel pump
I looked up the codes and they show a few fuses to check. I just skimmed the codes quick since i dont have alot of time at the moment.
Heres a link to where i was finding the codes. They are mostly listed under the "Manufacturer Code Charts". Codes arent in order so have to look for them out of order. https://charm.li/Mercedes%20Benz/201...8%20DTC%20%29/
I looked up the codes and they show a few fuses to check. I just skimmed the codes quick since i dont have alot of time at the moment.
Heres a link to where i was finding the codes. They are mostly listed under the "Manufacturer Code Charts". Codes arent in order so have to look for them out of order. https://charm.li/Mercedes%20Benz/201...8%20DTC%20%29/
I replaced the battery for a better one recommended for my c300. It cleared most codes except the 1337 code . I tried to read the starter but I couldn’t find the data stream for it .
Im not sure what communication with the starter would even be. When I look up that code it just mentions the alternator, not the starter.
Is the car still not starting?
Heres what it says for the starting function:
yea car still won’t start . I’m thinking the starter is the problem . I changed my alternator a week ago . New and plugged in . Changed my battery , new belt . Still won’t start . I’m thinking the starter since that’s the only one I haven’t changed and I can’t read data stream to starter
I was looking thru the electrical diagrams. It looks like the starter and the alternator are connected by + wire.
There is a LIN wire from the alternator to the ECU. LIN C1. Wonder if that has a faulty/loose connection. S-Prihadi knows alot about this stuff. Hes usually in the W212 section.
I was looking thru the electrical diagrams. It looks like the starter and the alternator are connected by + wire.
There is a LIN wire from the alternator to the ECU. LIN C1. Wonder if that has a faulty/loose connection. S-Prihadi knows alot about this stuff. Hes usually in the W212 section.
There isn’t much information that comes directly from the starting/charging circuit, but what info there should be seems to be absent. That LIN circuit is a low speed serial bus sending basic charging voltage information. Check the connections on the alternator. Since the alternator is new, make sure they are tight. If there is a separate ground for the alternator, pay special attention to it.
Two other ideas popped into my mind about this issue:
First is an open fuse in the prefuse box. Check the wiring diagram from @TimC300 to see if the alternator output even goes through the prefuse or if it’s only the battery.
Next, as a last thought, is the Drive Authorization System. You may need to scan that on a cold start attempt to see if it is blocking the starter. With the right scanner you can determine which component was not satisfied and go from there.
There isn’t much information that comes directly from the starting/charging circuit, but what info there should be seems to be absent. That LIN circuit is a low speed serial bus sending basic charging voltage information. Check the connections on the alternator. Since the alternator is new, make sure they are tight. If there is a separate ground for the alternator, pay special attention to it.
Two other ideas popped into my mind about this issue:
First is an open fuse in the prefuse box. Check the wiring diagram from @TimC300 to see if the alternator output even goes through the prefuse or if it’s only the battery.
Next, as a last thought, is the Drive Authorization System. You may need to scan that on a cold start attempt to see if it is blocking the starter. With the right scanner you can determine which component was not satisfied and go from there.
which fuses should I look at? 7? L? M? Or is this the wrong fuse box ?
There isn’t much information that comes directly from the starting/charging circuit, but what info there should be seems to be absent. That LIN circuit is a low speed serial bus sending basic charging voltage information. Check the connections on the alternator. Since the alternator is new, make sure they are tight. If there is a separate ground for the alternator, pay special attention to it.
Two other ideas popped into my mind about this issue:
First is an open fuse in the prefuse box. Check the wiring diagram from @TimC300 to see if the alternator output even goes through the prefuse or if it’s only the battery.
Next, as a last thought, is the Drive Authorization System. You may need to scan that on a cold start attempt to see if it is blocking the starter. With the right scanner you can determine which component was not satisfied and go from there.
You mentioned a “ separate ground for the alternator “ what would that look like? If I were to look under my car what would I have to look out for? Sorry if I’m asking a lot.
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