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2018 Civic, turn signal flashing when car is totally off

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  #1  
Old 07-13-2023, 09:24 AM
SonLPham's Avatar
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Default 2018 Civic, turn signal flashing when car is totally off

Hi, I got a weird thing: I can not identify what is happening to my 2018 Civic.
The rear passenger turn signal flashes randomly when the car is off and all doors are locked.
I brought my car to the dealer, and they told me that they had checked all lights and connectors and nothing was wrong with them.
They suggest starting with BCM replacement and monitor, which will cost me $650.
I don't understand what is BCM REPLACEMENT and think that even if the BCM was replaced, it would not end the turn signal from flashing. and the future repair job on the same problem would cost me more.

Please advise me if you have any solution. Or should I agree with the dealer service suggestion?

Thank you
 
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Old 07-13-2023, 04:02 PM
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Why two posts?
 
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