2008 Dodge Grand Caravan side door does not automatically close.

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Question moved to model category.

The problem here is the wiring harness where it travels from the door into the door frame. Constant opening and closing of the driver's door bends the wires back and forth until they work harden and snap. This issue ONLY happens on the driver door.

Once you get inside there, you can check with a multimeter and replace that wire.

https://www.google.com/search?q=2008+dodge+grand+caravan+door+lock+wiring+harness+diagram

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More than likely if other functions work with the key fob either the key Fob is defective or the system needs to be reprogrammed.

spray lubricating oil onto the roller wheels that the door runs on as this is were the bearings are that need oiling. there is 4 I think.

be looking at the control relay switches for that door..also look for the door to be off track,, this may be putting it in a bind..

The rod or cable inside the door is not hooked up.

A electronic control module . passenger door module . I would check for a broke wire inside the flex boot from the body to passenger door .
Watch this video .
Dodge Grand Caravan No Power Window No Power Locks CAN Trouble

Test the door by manually opening and closing it and seeing how it feels. If it's hanging up at some point it could be something in the track or just may need the rollers Lube

These automatic side doors are extremely complicated and require a trained technician to repair wit the factory repair guides to go by, there are many adjustments to be made and sometimes that is all they need plus some cleaning and lubrication of the latch and moving parts. My best advice is let the dealer fix this.

Owen, Try this Get in close doors, don't lock them. Put key in, cycle the key on & off 4 times. Ending in the off position. After the 4th time & within 10 seconds, press the lock switch on the drivers door. If you here a chime, they are reprogramed

could be a partially broken wire in the wiring harness that runs in the door track. the wires are inside what looks like a plastic chain that allows it to move with the door and have seen them partially break not allowing power to flow the whole time