Electrical Issues 2015 c300
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2015 C300 4Matic
Electrical Issues 2015 c300
Hi everyone, wanted to get some insight for some strange electrical issues I’m having with my 2015 c300, roughly 92k miles.
Starting earlier this year, 2 times now, after light rain, I’ve had all sorts of electrical issues. Turn signals not working, blind spot failing, high beam not working, and headlights staying on and flickering after I off the car. Noticed after dry and a few days later, no issues, but it happened last night for the second time. My battery was replaced about 1.5 years ago.
Any advice on what could be going on? Took it to a local shop and couldn’t replicate the issue, but at that time I guess the car might have been dry or something. Note that my car has been in borderline hurricane rain 4 years ago and no issues whatsoever in those time.
Some brief searching tells me this could be some battery issue, alternator issue, or SAM module water intrusion. As I can’t replicate this and it goes away, not sure what it could be. Thanks so much! Appreciate any help.
Starting earlier this year, 2 times now, after light rain, I’ve had all sorts of electrical issues. Turn signals not working, blind spot failing, high beam not working, and headlights staying on and flickering after I off the car. Noticed after dry and a few days later, no issues, but it happened last night for the second time. My battery was replaced about 1.5 years ago.
Any advice on what could be going on? Took it to a local shop and couldn’t replicate the issue, but at that time I guess the car might have been dry or something. Note that my car has been in borderline hurricane rain 4 years ago and no issues whatsoever in those time.
Some brief searching tells me this could be some battery issue, alternator issue, or SAM module water intrusion. As I can’t replicate this and it goes away, not sure what it could be. Thanks so much! Appreciate any help.
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Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Hi everyone, wanted to get some insight for some strange electrical issues I’m having with my 2015 c300, roughly 92k miles.
Starting earlier this year, 2 times now, after light rain, I’ve had all sorts of electrical issues. Turn signals not working, blind spot failing, high beam not working, and headlights staying on and flickering after I off the car. Noticed after dry and a few days later, no issues, but it happened last night for the second time. My battery was replaced about 1.5 years ago.
Any advice on what could be going on? Took it to a local shop and couldn’t replicate the issue, but at that time I guess the car might have been dry or something. Note that my car has been in borderline hurricane rain 4 years ago and no issues whatsoever in those time.
Some brief searching tells me this could be some battery issue, alternator issue, or SAM module water intrusion. As I can’t replicate this and it goes away, not sure what it could be. Thanks so much! Appreciate any help.
Starting earlier this year, 2 times now, after light rain, I’ve had all sorts of electrical issues. Turn signals not working, blind spot failing, high beam not working, and headlights staying on and flickering after I off the car. Noticed after dry and a few days later, no issues, but it happened last night for the second time. My battery was replaced about 1.5 years ago.
Any advice on what could be going on? Took it to a local shop and couldn’t replicate the issue, but at that time I guess the car might have been dry or something. Note that my car has been in borderline hurricane rain 4 years ago and no issues whatsoever in those time.
Some brief searching tells me this could be some battery issue, alternator issue, or SAM module water intrusion. As I can’t replicate this and it goes away, not sure what it could be. Thanks so much! Appreciate any help.
You should get your chassis scanned for a complete list of module faults.
This will help pin-point issues.
