Quote:
Originally Posted by JCL
Worth mentioning that 2004 and onwards may require coding by the dealer to allow the vehicle to recognize the trailer wiring module that you installed in step 12. Earlier X5s didn't require coding (my 2003 didn't) but it appears to depend on the specific software that your vehicle has, whether the module is recognized or not. If not, trailer wiring and PDC cancellation will not function correctly.
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The trailer module is the cylindrical thing which goes next to receiver? I had installed on 2005 4.8is and don't recollect any coding by dealer and no PDC issues either. Maybe the software version recognized it.
