Anyone know how to sort this?

Every time I start my car, I have to go to audio settings and change AUX 1 to ipod. Turn car off - this setting is forgotten.

Pretty annoying..

Pretty sure it's not saving my radio settings also!

constant has to be hooked up for the unit to power up at all, but it does sound like it is not hooked up to the right source, the yellow wire at the back of the radio needs to see 12+ all the time (this is what keeps the memory settings) the red wire needs to see 12+ only when the key is on, it is very possible that you have these hooked up in reverse, pull apart and test with a meter to verify.

 

there are a few car where the constant and ACC wires are switched in the aftermarket harness (older Mercedes for example that use the VW harness)