pose_etc Posted February 28, 2018 Report Share Posted February 28, 2018 Good Morning. I just purchased a 2003 DTS, and love the car. It has the Bose Touch Screen/DVD Nav System in dash with the CD changer in the glove box. Sometimes when I start the car, the head unit will not power up. However when I pull and re-insert the NAV fuse on the fuse panel, it powers right up. I've replaced the fuse already just in case, so that isn't the issue. Is there a relay or something I'm missing? Any ideas or insight would be greatly appreciated. Thanks, Pose Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted March 2, 2018 Report Share Posted March 2, 2018 intermittant problems are harder to track down. Are you sure it is not powering up, or could the screen be displaying as black because bad input from recalled settings or similar? I would look for other symtoms - example only at night, only when cold Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
pose_etc Posted March 5, 2018 Author Report Share Posted March 5, 2018 No power at all (buttons aren't even lit). However, this weekend I did note a couple things that may be related. When the key goes in the ignition and doesn't chime with the door open, the stereo will not power up, there are no lights on the rear collision "gauge" in the headliner, and the seat memory/exit buttons do not beep. I'm thinking about cleaning the connectors to the indash unit, and adding conductive grease. We'll see if that helps. Link to comment Share on other sites More sharing options...
Logan Posted March 5, 2018 Report Share Posted March 5, 2018 That is actually a great clue. The radio is the chime module. Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
pose_etc Posted March 5, 2018 Author Report Share Posted March 5, 2018 I thought it might be since all the aftermarket stereo kits mention the chimes. Also, it seems it's definitely temperature related. About halfway through my drive home, the chime sounded and the radio is back on. I think I'll get some NO-OX-ID to put on the connectors. As far as disconnecting and reconnecting the head unit I shouldn't have to get it programmed since it's still the same car, correct? Link to comment Share on other sites More sharing options...
Logan Posted March 6, 2018 Report Share Posted March 6, 2018 It could be the nav radio unit itself. You can of course send the unit to a GM radio repair shop. I had to send a Equinox nav radio in for repair about a year ago. Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
pose_etc Posted March 6, 2018 Author Report Share Posted March 6, 2018 I really would rather not put out that kind of money. I have a nice pioneer unit with Bluetooth that I can install with a chime retainer if that's the case. Link to comment Share on other sites More sharing options...
pose_etc Posted March 11, 2018 Author Report Share Posted March 11, 2018 I asked this earlier, but didn't get a response. If I unplug my nav/radio to clean the connections and plug it back in, will I need to have theftlock reset? Link to comment Share on other sites More sharing options...
pose_etc Posted March 12, 2018 Author Report Share Posted March 12, 2018 Sooooo nobody knows??? Link to comment Share on other sites More sharing options...
rockfangd Posted March 13, 2018 Report Share Posted March 13, 2018 No it should be vin encrypted. Therefore if stored vin matches it will work when plugged in GM FAN FOREVER Nice, clean, luxury= fine automobile Link to comment Share on other sites More sharing options...
pose_etc Posted March 13, 2018 Author Report Share Posted March 13, 2018 Okay, Thanks. I knew the one on my old Eldo was, but never worked on the Nav/Radio before and didn't want to cause a bigger problem for me. Link to comment Share on other sites More sharing options...
rhdsts Posted April 6, 2018 Report Share Posted April 6, 2018 If you need the software for the Nav unit, let me know. Usually it's only needed if you get a warning screen saying something like 'software not present'. The unit has a back-up battery inside it that should keep settings and software loaded, but if it has failed or run flat, then you need to re-load the software. Link to comment Share on other sites More sharing options...
pose_etc Posted April 17, 2018 Author Report Share Posted April 17, 2018 On 4/6/2018 at 7:00 PM, rhdsts said: If you need the software for the Nav unit, let me know. Usually it's only needed if you get a warning screen saying something like 'software not present'. The unit has a back-up battery inside it that should keep settings and software loaded, but if it has failed or run flat, then you need to re-load the software. Thanks. So far the memory in the unit is working fine, it just comes on when it feels like it. No rhyme or rhythm. Link to comment Share on other sites More sharing options...
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