[m4rrtin]

Hello,

I am going to retrofit Rear view camera on x3 F25 (vin: WBAWY310100F02258). In Installation Instructions is write "On cars with SA 606 (Business navigation system) and SA 663 (Business mobile phone preparation / Bluetooth interface), Champ2 must be exchanged."
Can I retrofit the camera with factory Champ2 or I have to replace with new one.

Thanks for help.

[SweetBMW]

In most cases you do. You can check tal calculation with esys it will tell you pretty quickly.