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    Trailer wiring controller recall W406

    I took my CS back to the dealer last week, it was lacking the trailer wiring socket. The service advisor indicated there was a recall W406 related to the trailer wiring controller, and that I would be getting a new controller, wiring harness and socket. It was the first I'd heard of it, so I thought I would pass it along.

    While it's in, there were some other warranty items being resolved. Still nothing about the transmission noise at 1800 -1900 rpm, or throttle hesitation.

    Re: Trailer wiring controller recall W406

    Yes, I have heard of this. I believe it has to do with error messages on the instrument cluster display and also various trailer lighting configurations that caused some problems before.

    I am not clear yet on the extent of this problem. Some people have no issues at all while towing. For me, all the lights worked fine but I would occasionally get a "check trailer lights" error message. Other owners actually do have trailer light problems, including running lights not working and some LED lighting systems not working. There is some speculation that the Cayenne towing module will not supply sufficent current for a trailer with many lights.

    If it is a recall, I have not received a letter yet. Maybe it is only a service bulletin. I will report more on this when I have better details.

    Re: Trailer wiring controller recall W406

    What production dates does this apply to?

    Re: Trailer wiring controller recall W406

    Everything I know is in my response above. I have not seen a bulletin or recall notice. There is nothing about this on NHTSA's website. Unless some other member can enlighten us, I think we will have to wait.

    Re: Trailer wiring controller recall W406

    Gary

    I have the updated controller and the software. I am told engineering is still working on yet another module with higher power output(current is default 50mA, max 100mA)

     
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