The door ajar light flashes and dings for both doors when driving.

ALL CARS DO THIS, BROKEN DOOR AJAR SWITHES
IS THERE SEAT BELTS JAMMING A DOOR JAMB

NO CAR TOLD
MAKER
MODEL
YEAR,
NOT ONE CLUE WHAT CAR YOU DRIVE.
THE NEWER THE CAR THE MORE DINGS.(CHIMES)
FOR VAST THINGS.
KEYOFF THE CLUSTER GOES OFF LINE, AND CAN NOT DING EVER OFFLINE.
100% NORMAL THAT KEY THING
CHIMES,
SEATBELT SWITCHES FAIL
DOOR AJAR FAIL
TPMS TIRE PRESSURES WRONG
GAS GAUGE LOW.
HEAD LAMPS LEFT ON ,KEY OFF.
THE USERS GUIDE ON THIS SECRET CAR COVERS ALL THIS.

The body control module controls all of your freaky problem. Replace that.

Take your father down to the local pub and leave him there then take the car to an accredited auto electrician to have it fixed NO honestly this is the best idea as it will cost less eventually to have it fixed professionally

your door switches are probably dirty spray them with wd40 then scrub them with a tooth brush

there is a switch on the door frame the door hits this and brakes the turns the light and door chime off, will need cleaning or replacing.

first of all, you may have one or more door buttons that are bad. spray all door switches with a good spray lubricant and see if this helps. if not, find bad one and replace it. if door switches are bad door ajar light will think door is still open.

Does the door ajar light come on when it makes the dinging sound? If so you probably have a stuck door sensor in the drivers door. The drivers door is the only one, I believe, that makes the dinging sound when it is opened when the ignition is on. Spray some WD-40 into the door latching mechanism and try to free up the micro switch, this is not a bad idea as preventative maintenance even if you are not having a problem.

open the door and there will be a small piece of plastic that can be pushed into and out of the door jamb. You will need to replace that because it is not telling the computer the door is shut.

sound like your fluid sensor may be stuck or bad if light stays on try tapping the washer motor on the resevoir if it goes out faulty sensor as for the door ajar light it might have bad connection with sensor saying the door is closed local dealer should be able to troubleshoot sensor

check the little rod that sticks out the door jam and make sure its in the proper spot if it got knocked somehow it could be closed but it doesn't know it and will ding