Fan keeps running after engine off killing the battery

Hi Ralph

Disconnecting battery cables could also cause troubles with clock & radio & other devices as they reset & you may have to re enter security code for radio etc.
Better to find the fuse for the fan or a connector point between fan & wiring harness.

Your Fan is probably continuing to run because the engine temperature is still high.
Does it eventually turn off after a length of time?
If not then the temperature sensor may be bad or the actual engine is overheating.
How is the Radiator Water level? Or Coolant? or coolant overflow container?

Cheers

Have your battery tested. If the fans ran all morning, too cool down your van it probably killed the battery. Also keep an eye on your temp gauge, and make sure it's not overheating. The temp sensor for the fans could also be faulty ; causing them to run longer than they should when you turn the van off.

Chysler vehicles are notorious for having recalls. Call your local dealer with your 17 digit vin and see if there are any active recalls on for vehicle. One call possibly fix this problem. If not, you need to check your engine temp sensor, the electric fan relay, and fan module. One of these switches and sensors are telling the fan to come on because the engine is warm and needs to be cooled off. You will find most of these sensors and switches near or close to the front of the motor close to the fan and top radiator hose. You can also retrace the wiring harness from the fan motor back to most of the sensors that control it. Hope this helps.

follow wiring harness toward fire wall there should be a plug , toy need the fan sensor for time being unplug it bwhen not in use

It is most likely the fan relay is sticking and allowing the fan to run on, the relay is plugged into the fuse/relay box on the drivers side of the engine compartment.

Some vehicles have sensors that can control the electric fan with the ignition off to keep the heat buildup that naturally occurs right after turning off the engine. This can prevent hard starting that can happen with a hot engine. If it is doing this an abnormal amount, the sensor that is operable with the ignition off may be failing. Before turning off the ignition, check to see if the engine temperature is pushing the 'red zone;' if it is, then the fan operation may be normal but your engine may be running hot.

that's normal when hot, but should't run down the battery. if severly overheats ffnd/fix that problem. the other will probably dissapear . if not excessively hot then the fan heat sensor is faulty....

some cars do start up the fan when turned off after they have been driven. as long as it is not starting when the engine is cold there is nothing to worry about. the reason it took 15 mins to shut off is that with the engine not running the water is not being pumped
round the engine thus cooling faster. hope this helps

if you mean the interior fan
replace fan control resistor driver side footwell in climate housing

seems like the fan relay is stuck if no one has been in messing with wiring