92 Grand Caravan 3.3L, disable rolling lock?

I'm fairly certain that it's done with a Chrysler DRB or properly equipped nonfactory scan tool. At least some Chrysler models from that era were capable of having their rolling locks defeated through a simple software menu on a scan tool. I'd be interested to find out if there is a non scantool method to do it but suspect there isn't.

BTW, what do you mean by "while driving down the road, the rolling lock feature *randomly* activates"? I seem to remember the lock point is about 13 MPH. Doesn't it always happen once you hit a certain speed? Toyota MDT in MO

I'm fairly certain that it's done with a Chrysler DRB or properly equipped nonfactory scan tool. At least some Chrysler models from that era were capable of having their rolling locks defeated through a simple software menu on a scan tool. I'd be interested to find out if there is a non scantool method to do it but suspect there isn't.

BTW, what do you mean by "while driving down the road, the rolling lock feature *randomly* activates"? I seem to remember the lock point is about 13 MPH. Doesn't it always happen once you hit a certain speed? Toyota MDT in MO

The way to turn that off is with the scan tool under customer preferences. If you say it randomly activates you may want to check your door switches, especially the sliding door. I believe on the newer models customer preferences is programmable with the igniton key

Probably. The later ones have a customer-accessible toggle for the feature that works this way:

Get in the car and have all the doors unlocked. Put the key in the ignition and turn the car to the on positionthen back to the off position

I'm not sure what the first year was for this, though.

Thanks for posting the procedure. The last one I changed was on a first generation Intrepid a couple years ago and that was with a scan tool.

Toyota MDT in MO

My 96 is customer programmable (key procedure) My 93 requires a scan tool. The change was likely at the 2nd to 3rd generation model switch. On a 92 I don't think there is any way to get around having a scan tool that can access the correct menu.

"BTW, what do you mean by "while driving down the road, the rolling lock feature *randomly* activates"? I seem to remember the lock point is about 13 MPH. Doesn't it always happen once you hit a certain speed? Toyota MDT in MO"

Specificaly, after the initial lock point (the one that is expected), the lock will randomly lock at any speed and with a random time delay. best way to describe it would be like a loose wire shorting out on bumps causing it to trigger randomly, though i have found no loose wire, and it dose not seem to be in relation to any bumps (does it on smooth road), though it does not do it when the van is not in motion.

Previous to writing, i have tested all the door sensors for "static" (poor connection) and the signal on each one is clean.

I would like to note that the chime that normaly sounds when the rolling lock activates sounds normally on the initial lock, but when the random locking kicks in, the chime is also random (IOW, in no direct relation to the locking).

interesting to note that with the power lock fuse pulled, the rolling lock still tries to activate the relay, but the chime does not sound. would i be correct in saying the rolling lock system is powered by this fuse, and that i could disable it by disconecting a wire (or several) somewhere?

right now it is not of the top-most priority (just a quirk that is bugging me) as my transmission seems to have failed (lots of fluid from the bellhousing, no drive in any gear, suspect tranny oil pump). quite interestingly right after i replaced the water-pump. when it rains, it pours, right?

~Travis