Had my new Sony head unit in my 97 Tacoma for a year without issues. When I put it in the 2003 (moved over the whole harness) I started to have a power issue. When I turn the ignition on, the radio comes back on to where it left off. As soon as I turn the key to start the truck the radio looks like it goes on and off, then I have to hit the power button to turn it on once the truck starts. This happens most of the time, but sometimes, the radio remains on like its supposed to.
I recently just bought another Sony radio and its doing the same exact thing.
I know that the 12V and 12V switched are hooked up correctly and working. When I turn off the truck the radio turns off, and beeps 3 times as it is supposed to to remind you to remove the face. The time is always correct too and the presets are fine.
I'm thinking when I'm staring the truck its loosing the 12V constant on, but not long enough to loose any presets or anything. Only enough to shut the radio to off.
Is it possible to replace the ignition switch without having to get it re-keyed?