Rear PDC beeps non-stop tone
 

any fix advice or relevant info is appreciated.
Thanks!

Take all the sensors out, give them a good clean, and clean the contacts and plugs with and electrical cleaner. Then replace and try again. If this does not help then one/some of the sensors have gone faulty.

you probably have a faulty sensor. i had this happen to me and the dealer replaced the sensor and the rear pdc speaker. if you're still under warranty, just take it to the dealer.

somehow the problem goes away without any fix. Wierd....

That why I suggested a clean of the sensors and terminals as it could just be moisture or dirt. Good to hear its all working again!!

Thanks!
BTW, how to take out the sensors for cleaning? is it a DIY job or require substantial effort? any relevant info is appreciated!

It ca be done DIY. The sensors pop out.

Sudesh,
how? use a screwdriver or any special tool needed?

I took mine out by hand. They are not held in too tight. I reached up under the bumper behind the sensor and slowly pushed it out. Then unlug it and cleaned it up.!!

Thanks!