Seat Fuse

Obed Owner/Technician Florida Posted   Latest   Edited  
Unsolved
Electrical
2012 BMW 640i 3.0L (N55B30A) 8-spd (GA8HP45Z) — WBALW7C52CC618609

Hello have this vehicle that blows F52 intermittently that powers the drivers seat module looking for any direction already checked harness

Thanks

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Dan Owner/Technician
Texas
Dan Default
 

...Put a small bulb across that fuse holder and if it lights up (it shouldn't) the short is active (it is protected in this state)...wiggle/manipulate stuff and if you see the bulb falter, you are close to the short...Dan H. ...South Texas...

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Bryan Owner/Technician
Alabama
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Dan, yes, That is good way to troubleshoot. Also, if you have a thermal camera, you can see a heat trace from where the short to ground is located. Vehicle needs to have sat overnight so everything will be the same temperature, except for the short.

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Dan Owner/Technician
Texas
Dan Default
 

...If the bulb does NOT light...wiggle stuff until it DOES...again,you are close when it does this change of state...Dan H. ...again...

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Steven Mechanic
Washington
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You can put an amp clamp around the power wire, then activate each seat motor one at a time (all the way to the end stops) and try to find which motor is bad or drawing too much current. If that all checks out, then you need to find out if it is the seat harness or the harness from the fuse to the seat. There are several ways to check that depending on how intermittent it is.

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