Mercedes CLS 350 charging problem - Mercedes-Benz Forum
 
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post #1 of 7 (permalink) Old 08-07-2015, 07:34 AM Thread Starter
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Unhappy Mercedes CLS 350 charging problem

Hello all,this is my first post.

I have one CLS 350 2005 in my garage with aftermarket LPG installed in him.After long time trying to figure out what is the problem with charging on this car,i register account here to ask you good people if you can help me.

Firstly,the car wasn't charging (red light comes on saying visit workshop and convinience* stuff etc.) because bearings on generator went completely off and rotor started to pinch on stator,and diodes on generator died. So i had replaced bearings,new stator,diodes and regulator. But again,after 3000rpms it would drop voltage under 12,5v and it would continue to drop. Then i replaced a new rotor,and it was okay for about one month.

But the customer comes back saying that problem with red light comes back on and the car lose power (what is normal for droping voltage). STAR diagnosis says on engine ME 9.7 "serial interface generator error" code 1337,and STAR says it is actual error and it wouldn't erase it. I don't know what to do next i swapped BCM module in trunk--> still same problem. I looked up for those wiring from generator to N3/10 ME 9.7 and the wire is okay. Please,if someone could help me i would be thankfull a lot.

Cheers guys
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post #2 of 7 (permalink) Old 08-08-2015, 07:52 AM
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I'm surprised you are going through all the trouble given that new alternators are a dime a dozen. Could be in the field windings which while I could be mistaken can't be replaced. I'd just replace the alternator and be done with it.
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post #3 of 7 (permalink) Old 08-10-2015, 07:56 AM Thread Starter
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thank you for your reply vvrjrlaw... i erased codes successfully,problem was in regulator...so i replaced the brand new rotor and regulator... now the car is charging around 13.3-13.5v when idle,and with little bit of throttle it jumps on 13.7v... if i found something usefull,i will post here
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post #4 of 7 (permalink) Old 08-10-2015, 03:33 PM
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Keep watch on it. It should be charging between 13.8-14.2. And you are quite welcome. ;-)
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post #5 of 7 (permalink) Old 01-18-2019, 09:12 AM
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adding to this thread . i have a 2007 e350. star shows me code 1337. generic obd scanners (3 of them) show code p2571. star will not erase its code (lin signal) but, the obd scanner will erase the code p2571 only to return on the second restart of the engine. are there one or two faults? is there a test proceedure for the ozone sensor instead of just changing it and crossing ones fingers? any input by someone who knows what im talking about would be greatly appreciated. i already changed the bcm and regulator. and the lin signal wire is not broken all the way to the me box pin 45...
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post #6 of 7 (permalink) Old 01-18-2019, 08:15 PM
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If this is a MY2007 E350, then you should be in the W211 forum. Regardless, MBZ DTC 1337 indicates a problem with the CAN bus interface to the alternator. If the wires is good to the ECU pin 45, then I suspect a bad voltage regulator on the alternator.

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post #7 of 7 (permalink) Old 01-20-2019, 07:22 AM
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rodeney. what F&#$%$ use was your response? after telling me you would like to know which cars i have you finally re-tell me what i already wrote INCORRECTLY! the problem (1337) is in the lin. i'm not a profiler usually. but, you are probably the biggest tell tale in your homeowners association. in other words a useless pain in the arse. i also own 12 cars and im not writing a book about them. the one in question is spelled out in the post. another plus is of my 12 cars 9 are way better than yours....
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