Need your help guys. Just had the car 57 plate Avensis T4 2.0 D4D back from local indie garage following air con condenser replacement. Battery was disconnected to enable strip down. Drove home and turned on the stereo and nothing, no volume at all..... It's the touch screen sat nav stereo with the flip up front for the sat nav DVD and the CD. Garage said it must have a code and suggested that it should be with the handbook. It's not!!! Any ideas whether I need a code, and if so where I can get it from?... Steve