Sony DSX-B700 - keeps resetting

[John D.]

I've got one of these head units in a second hand car I bought recently. Every time the car is switched off it reverts to demo mode. I have to select region when it turns on, and it doesn't retain any presets or stay paired with my phone.

Any idea how to fix this?

https://www.halfords.com/technology/car-audio/car-...

[John D.]

Thanks chaps.

[John D.]

defblade said:

+ 1

Pull it out, you'll probably find a red wire and a yellow wire in the harness coming from the back. They need swapping - a lot of harnesses have bullet connectors or similar in them to make this an easy job as car manufacturers are not consistent with their permanent and switched live feeds.

Was exactly that. Very helpful, thanks.