C. E. White wrote: ( 1999 Ford Ranger )
The radio does not always turn off when the ignition is switched off.
Sometimes it goes off, sometimes not. And this morning I walked by
and the radio was off, but later, I heard music outside - the radio had
turned itself on, with the ignition off and the key out. I am assuming
the problem is in the radio. Before I start tearing things apart, has
anyone else seen a problem like this...
If it was a defective ignition switch, other accessories or dash instruments
would also go on. There is a small possibility that it is a cross-connection
with the always-on memory power supply. A third possibility is a defective
power antenna. The antenna has a separate always-on power connection
to retract itself when power from the radio is turned off. If the antenna
power becomes accidentally cross-connected to the radio's antenna deploy
line, it will keep the radio on. When the ghost radio is on, disconnect the
power plug to the antenna. If the radio then goes off, that is the problem.