OK, here's a good one for you:
I have a brand new GTS Cab with about 1400 miles, and I've picked up on a very interesting pattern.
The radio tuner has a tendency to turn itself on spontaneously when passing under a bridge, or when around fairly tall buldings. I live in Santa Fe, so there aren't any hi-rises, but when I drive downtown, and am around 3 or 4 story buildings, the tuner turns itself on repeatedly.
What the hell?

 

Santa Fe......Los Alamos.....UFOs........

Connect the dots. It's all part of the "conspiracy". Haven't you been watching the Presidential debates?

 

OMG! I think you're on to something!

 

which tuner - AM, FM or XM?

If:
- AM very normal
- XM can be typical depending on density of terrestrial repeaters in area as satellite "line of sight" gets blocked
- FM not really normal
- CD or iPod, see Santa Fe......Los Alamos.....UFOs conspiracy above

Does it really turn itself off or just go silent and then return when clear of tall/overhead obstacle? You're under warranty, have the dealer look at it. But if it's AM only, be prepared for them to tell you they found the source and it's a short between steering wheel and driver's seat

Good luck

 

It doesn't turn itself off - it turns itself ON.

 

Oh, definitely bizarre. x2 on conspiracy theory

Good luck and at least you are under warranty

 

may have something to do with the volume/ volume ****. I would start there. Turning it powers on my sound system.

 

Do you have the MF steering wheel?

 

My '05 C2's radio is quite predictable. In the interest of doing a good deed, I'll reluctantly trade you.

 

No, sport design.

 

Happened again a couple of times today. Once under a bridge, and once upon pulling into my garage.

 

Damn hard to diagnose things from this far away, but one possibility. When you say it was 'off' as the initial condition, do you really mean the PCM was active to support your Bluetooth phone and such, but you had pressed the volume button to mute the tuner at some earlier point?

If that latter, then it's not turning itself on, it's merely dropping the mute setting. That happens because the high-school intern they allowed to program the entertainment sections of the device thinks that you naturally want the volume turned on when the device initializes. The same thing happens to me when I have everything muted and I get a phone call. I answer it, talk, hang up and some damn Latino FM station begins belting out salsa rock.

The system defaults back to 'FM' (which we don't have around here) and to "volume on" whenever something interrupts it and it 'resumes' in any sense. Coming out of a phone call is treated as a 'resume', as is ejecting a CD, or having the signal disappear and then come back. The signal went away, so the PCM went into a search mode, then the signal came back. Resume! Shazam, hit the volume.

Hope the damn kid gets a girl friend and wants a life before we buy another Porsche. Maybe they'll let one of the upholsterers program the next version. The one who laid out the database for the map function perhaps.

Gary

 

Thanks Gary. That sounds like the deal. But how do I even turn the pcm completeely off? It's probably not possible with bluetooth activated, is it?

 

I've never tried seriously to look it up, but in casual fiddling with likely controls, I can't find a way. You have to have the PCM awake to use the phone interface, or anything else Bluetooth I'm sure, but I can't find a way to turn off the tuners when the PCM is active.

Possibly a way was considered, but the kid had to go study for mid-terms before he had time to code it in.

Gary, who will tell the true story behind that dripping sarcasm when he has more time

 

If I have the radio muted it will turn on after some period of time. If I turn the system off by holding in the volume **** until the screen blacks out I have not experienced what mseligson noted.