RT rear door ajar

If you have replaced the door switch and it is now functioning correctly, but the door ajar light is still coming on when you close the door, there may be an issue with the door latch or a wiring problem. Here are a few things to check:

1. Check the door latch: The door latch is what holds the door closed and triggers the door ajar switch when it is opened. If the latch is worn or damaged, it may not be able to hold the door closed properly, causing the switch to trigger the door ajar light. Try lubricating the latch with a silicone spray and see if this helps. If not, you may need to replace the latch.
2. Check the wiring: There may be a wiring problem that is causing the door ajar light to come on. Check the wiring going to the door switch and make sure there are no breaks or damage. Also, check the wiring going to the body control module (BCM) and make sure there are no issues.
3. Reset the BCM: If you have checked the door latch and wiring and everything looks good, you may need to reset the BCM. Disconnect the negative battery cable and leave it disconnected for about 10 minutes. Reconnect the battery and see if this helps.

If none of these steps fix the issue, you may need to take the vehicle to a mechanic or dealership to have it diagnosed.

Your door ajar switches are located inside the rear faces of each door along with the latches. Just liberally spray a petroleum based lubricant into the door latch areas of each door (one at a time) and open / close the door several times. Once lubricated, your door ajar light, interior lights, and autolocks should function properly.

Good luck.

The switch for "door ajar" is located in each door, attached to the latch mechanism. This is a common problem. Using your favorite petroleum based lubricant, spray it liberally into the door latch mechanism (as seen from the rear face of the door). Open and close the door several times. Go from door to door, doing this for each one, until you find which door was causing the issue. You might have to re-lube the doors from time to time, but this should solve your problem.

Good luck.

Most likely, the auto-locks aren't working because it thinks one or more doors are open.
The door ajar switch is located inside the rear door face along with the latch. They can tend to get dirty and sticky over time. Using your favorite petroleum based lubricating spray, shoot it directly into the door latch area, being very liberal. Open and close your doors several times to make sure the switch is working freely. You should do this one door at a time so you can diagnose which door is causing the issue in case it resurfaces. Should be good to go.

Good luck.

The door ajar switch is located inside the rear door face along with the latch. They can tend to get dirty and sticky over time. Using your favorite petroleum based lubricating spray, shoot it directly into the door latch area, being very liberal. Open and close your doors several times to make sure the switch is working freely. You should do this one door at a time so you can diagnose which door is causing the issue in case it resurfaces. Should be good to go.

Good luck

I've sen this a number of times, i sprayed a lubricant into the door latches,rear door also open and closed the doors several times and the light went out

You will need to spray each door latch including the rear hatch liberally with WD 40 or spray lubricant on the latch and open and close each door several times after spraying. This will usually be sufficient to get the door sensors to detect when you have closed the doors. If this doesn't do it, it will hep to figure out which door is intermittently causing the door ajar light to stay on.

spray some lubricant (wd40 etc.) into the lock mechanism on the doors .. the switch may be jamming up ..

The front door entry system contains a latch that is fastened to the inside of the door frame and is controlled by the exterior and interior door handles. The latch contains a door ajar switch and a door lock actuator. The front doors can be locked/unlocked by the remote keyless entry (RKE) transmitter, the RKE keypad, the door lock control switch or the door lock cylinder .

this sounds stupid, but i had the same problem with my mk8. and it fixed it. open the door and look at the door lockimg latch on the door frame. pull on the door handle numerous times as you spray some silicone lubricant in and around all the mechanism. This will free up the pin switch that is activated by a cam on the door latching mechanism. I fixed mine 6 months ago and have had no problems since.

Remove "Door Ajar" switch. Clean the switch and use a graphite type lubricant (I recommend "Dry-Slide") to lubricate the actuator on the switch. Reassemble the switch.

The switches are located inside the door panels, attached to the catch mechanism.

1) Remove interior door panel.

2) Using a T-27 Torx driver, remove the 3 bolts holding the catch in the door.
2a) The door ajar switch is the only part on the mechanism with the 2-wire harness.
2b) The switch is located at the rear catch for the sliding door.

3) Using a small flat screwdriver, gently lift the black tab on the catch mechanism and rotate the switch to remove it from the catch assembly.

4) Using a rag, clean the small round actuator and apply a small amount of graphite lubricant to the actuator and work the switch so it moves freely.

5) Reassemble the catch and the door.