Parking warning

[Mike K]

Can anyone help me please, my 2015 Q5 front parking warning doesn’t work when approaching a wall etc. but when the ignition is switched back on when leaving the warning works, any idea.

[Steve Q]

You'll need a diagnostic check to see if any fault codes flag up but my guess would be a failed sensor or failing module 

[Mark M.]

Are the sensors turned on when your approaching the wall?

They only activate when you put the car in reverse or if you push the button to turn them on, then they should stay active until your forward speed is over 4mph(ish)