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Brake lights don't work-intermittant problem

1.5K views 4 replies 3 participants last post by  saltshaker185  
#1 ·
I get an error message at times when applying my brakes on my 525i-"see manual." This is an intermittant problem, most of the time the brakes lights work. I'm guessing it must be a sensor or relay but don't know where to look to replace it. I would appreciate any suggestions.
Thanks in advance.