Double check you don't the remote wire going to your amp hooked up wrong or it's not some other accessory plugged into the radio. If not then there is something wrong with the unit itself. I had a factory amp go bad so it wouldn't shut off when the car was off. The car was drawing 500mA off and the battery would die in a week. It was 25mA once I replaced the amp. Keep in mind that after you turn the car off it will take a few seconds before all your accessories fully power down.
2006 Acura MDX
2001 Phoenix Yellow M3
Schrick cams - AFE intake - Custom Tune - Supersprint full exhaust - Evosport pulleys - UUC Evo 3 short shift kit - Brembo 14" BBK brake kit - Euro rear floating rotors - TC Kline Double Adjustable coilovers - Vorshlag caster/camber plates - Adjustable rear camber arms - Black 2005 competition package interior - Vorsteiner CSL front bumper - 19" CSL wheels
Last edited by SmokeyDP; 12-24-2012 at 11:17 AM.