Okay, first things first. This is an intermittent problem. It started happening 6 months ago in my Tacoma. I sold the Tacoma, and moved my system to my Volkswagen, and the problem persists. It happens probably 2-3 times every two weeks. However, it is becoming more frequent.
First the information...
Car 1:
2007 Toyota Tacoma PreRunner
Replaced: Base stereo
Car 2:
2004 Volkswagen Golf GL TDI
Replaced: Base stereo - NOT THE MONSOON SYSTEM
Headunit:
Pioneer AVIC-F700BT (from SonicElectronix 2 years ago)
CD-IU230V iPod/iPhone interface cable (from Best Buy 2 years ago)
GEX