On my 2014 MKZ w/Tech Pkg, one of the sensors in the front bumper has popped out. I'm guessing a stone hit it. This has resulted in the #%#@$ Front Parking Assist tone to go off repeatedly and I'm guessing why no matter how times I use the steering wheel control to turn it off it stays on. So...
1) If the top radiator is removed can the sensor be reached?
2) How does one pop out the ribbed plastic hold-downs without destroying them? Or are they throw aways and I need to go to a parts store to get replacements?
3) If the sensor is not the cause of the continual tone, is there a reset function?
4) Can it even be fixed by a DIYer or is it a trip to garage?
Thank you.