[SleeperBMW69]

I'm new to this so don't be to harsh but I have the sensors in the front bumper and they only work once I put it into reverse. My buddy has them too and when get in a parking lot or under a certain speed he said his turns on automatic. Is there a way to code it to come on while in drive.

[NxTH]

You need to press the button next to the shifter, or indeed engage reverse. They only turn on automatically if you are inches away from hitting something. Test it, go really close to something and they'll start blasting on red. And yes on red, if you were going a bit too fast, you'd probably hit the object before the alarm even triggers.

[eff32fl]

Aside from reversing, I believe the auto-PDC is only available if you have parking assistance.