06 cadillac cts - theftlock light came on radio panel. auto door locks and windows wouldnt work. radio went off and just THEFTLOCK appeared on screen. i stopped and turned car off. restarted car and everything came back on and started working again. does this mean i need to service the car or did it reset itself?
I've seen this happen if the vehicle has experanced a voltage dropout or spike, might be a good idea to have the battery, all the cables and charging system checked. Then you should manually lock all the doors but the drivers door, with key in hand exit the vehicle and then using the key lock the drivers door, wait until the dome light goes out and then at least one minute more, then using the key unlock the drivers door and start the engine, that will fully reset the system. Make sure you have someone qualified to work on you Caddie, one mistake in checking it out and your at the dealer getting the system reflashed.
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