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For about 3 weeks I have had to deal with this VERY annoying issue. "Passenger Door Ajar" message displays on the dash panel, the interior lights flash on and off, the warning chime comes on and off, and the doors try to unlock. I took it to the dealer who stated that I needed a door lock actuator. I had the passenger side replaced. $250 later, the problem was not fixed. I had the driver side actuator replace. $250 later still not fixed. I read through some forums which stated that BCM may be the problem. $1,000 later, I just drove off the dealer's lot and guess what...the problem is still not fixed. What now?
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I would be happy to look into this further for you. In order to do so, I will need some more specific information from you. If you could please send me your full name, address, phone number, the VIN for the vehicle, current mileage, and dealer name via private message or email, I will be able to take further steps. Thank you again and I look forward to hearing from you.
I'm not an H2 guy by any means. Do they have door pin switches? If so replace the $10 part and see if that is your issue.
Either way it sounds like whatever sends the door ajar signal to the light/BCM has the issue. If you can figure out what sends the signal (pin switch/ground/etc) you may be able to solve the problem. The "flicker" you get is due to a bad contact that is open then closed and open again.