wiring issue on rear bumper

Old Aug 1, 2023 | 07:34 AM
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wiring issue on rear bumper

Hi guys,
I have a problem with my 2012 CLS 550. The car was in a shop for fixing some scratches on the front and rear bumpers. After I get the car back there was an error "blind spot inoperative". The guys at the shop removed the rear bumper to check if all the connectors were good and noticed that one of the cables going into the socket for one of the blind spot sensors was cut and they soldered it. The error was gone and all functions worked as expected. But 2 days later, while I was driving the "blind spot inoperative" error popped again, but this time with random errors like "front right (and left) turn signal not working", (all the blinkers - front, mirror and rear, are working fine, although inside the they are blinking really fast, but outside they are operating normally). An error for dimmed beam or something like that popped up once, but again with no visible problems. I guess my question is - is it possible a faulty soldering in the wiring in the rear bumper to cause all these issues, or it is just a coincidence and the problem is elsewhere?
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