Parking sensors are not working properly when I put the gear into revers it starts BEEPING like it is near the wall or something else but it is far away . When I start going reverse it keeps beeping for one or two meters and when it stops completely . What can it be Looking forward to your replay

It is worth checking the simple silly stuff first. Check all of the doors and trunk are closed properly. Are you or a passenger sitting without your seat belt fastened? Do you have something heavy on one of the seats? I had a large sack of potatoes on the passenger seat that triggered the seat belt warning beep. Took me 10 minutes to figure that one out! If yours has parking sensors are you parked close to a wall or high kerb that it's detecting? Some 'electric' park brakes have warning tones if they are in the wrong position when trying to drive.
Are there any warning lights on the dashboard? These can give clues to what the problem is.

run fault codes to determine the faulty sensor.. I cannot see any connection between a parking light and your problem

assumeing you are wanting to hook up some type of device that need to come on when you put it in rev,,,,too start with go to rear and find your back up lights ,access wires feeding back up lights ,one wire is ground and one will be hot when you put it in rev, turn key on DO NOT START CAR.SET PARKING BRAKE....put car in rev ,and with test light find power there u have it

One way to turn off the automatic headlights when the ignition is to apply the parking brake. That dinging sound you hear when you shift into drive is also common with the parking brake applied.

Release the parking brake.

Back you referring to the backup alarm?

Many vehicles have some sort of safety interlock that prevents the car from being started or operated or put in gear - under certain conditions that could be dangerous. Ex. Steering wheel interlock, gear selector interlock, parking brake, regular brakes. Some vehicles even have a little finger lever near the igntion key which must be pressed before the key will release or can be turned. Look for these. Try to step on the brakes. If manual transmission, try to set the parking brake and take the car out of gear / put the shift lever in neutral. If automatic, make sure the car shift lever is in P for PARK. It must be something like that.

consult with your car's user manual - usually found in the glove box. It should tell you about these things.

Check to make sure that there is no dirt on censors.

Try to clean rear parking sensors. Check also electric cables and connections, clean if necessary. Commons faults are sensors out of order. If one or more sensors faults you hear only a continous constant noise when you put in "R" gear. You need a VAS, VAG-COM, Bosch KTS, ... diagnosis scantool. The factory parking system will be scaned from errors with this instrument, and you will find exactly which sensors are out of order (for example: rear left center sensor, rear right side sensor break off, short to ground or short to plus).

Try to clean rear parking sensors. Check also electric cables and connections, clean if necessary. Commons faults are sensors out of order. If one or more sensors faults you hear only a continous constant noise when you put in "R" gear. You need a VAS, VAG-COM, Bosch KTS, ... diagnosis scantool. The factory parking system will be scaned from errors with this instrument, and you will find exactly which sensors are out of order (for example: rear left center sensor, rear right side sensor break off, short to ground or short to plus).

try washing the rear bumper!