[Gonzo]

Would anyone have any suggestions on this one? Why wife's RX300 lately has been loosing all radio presets and clock time. Its like the battery was disconnected for a second.

I got in after an overnight of cold temps and it was OK. I drove for about 20 minutes turned off the car. Came back to it 30 minutes latter and wham! Clock reset, radio presets gone.

The car has been starting fine and the battery contacts are clean/secure. Is there anything else I should do/check?

I've never seen anything like this before.

 

[jaak]

There's two power connections to a radio. One is constant power to keep the presets stored and the clock running and the other is to permit the radio to turn on with the accessory or run position of the ignition switch.

If the connection for the constant power is intermittant, it would do what you describe. This could inside or outside the radio.

 

[Gonzo]

I would be surprised if it was a bad connection... its an OEM radio and their connections are pretty much bullet proof.

Could an old battery cause this?