2003 RX300. Power antenna is automatically going up with Radio off, engine shut off and doors locked. The antenna hasn't been working in the last few weeks. This morning is was down while setting in the driveway. Looked at the car 1 hour later and antenna was up. I have recording on my ring camera. Is the antenna motor? Radio? Ghost?
Thanks all!

 

It is strange. The only thing I can add is that the default mode of the entertainment system is Radio and that will send signal to the antenna motor.

You can remove battery power for about 20mins to purge gremlins ib the software.

Just exercise going through car-wash till the problem goes away.

Salim

 

Could also be a intermittent short between a 12v always-on power wire and the 12v radio-controlled antenna up wire(?)

 

So after removing the Antenna and motor there was water in the housing. The drain hose was clogged slightly. I think I'm going to go the conversion route to a fixed antenna. This is the 5th antenna in 18 years of owning this car.