Early 2014 Passat SE
My compass worked great for the first 3 years until the original car battery died. I think that trying to start the car with a nearly dead battery killed the module that works the compass. After installing a new battery, most times there is no compass showing. When it does come up, it reads either NW or E no matter what direction I'm headed.
I took it to the dealer who spent 2 days trying to repair. I have an SE model without navigation. The dealer told me my compass is in the telephone control module which also runs car net. It is located under the passenger seat in a foam housing that slides out toward the front. The module part number is
561 035 285. There is no form of calibration for this type of system and no separate compass module.
A new telephone control module from the dealer is over $500, so I passed. There are many of these available on eBay and I was able buy a used unit with warranty for $32. Unfortunately, after installing the replacement, I had no compass at all. I put the old unit back in and the compass works as before, intermittently showing only NW or E.
Does anyone have experience with this type of system? Did I just get a bad replacement module? Please share your experience. One last bit of info. The SW version on my original module is 0086. The replacement I bought had a SW version of 0102. Does that make a difference or is it just a software update that will work fine in my car? VW techs, help us out.