Jeep '99 Mist from AC vents?

If the alarm goes off, it its because it was armed in the first place. You mist disarm it before entering the vehicle. To disarm it push the remote control unlock button or open eithe front door or liftgate using the key in the keylock.

So that you get a little confidence in what
you are going to attempt, please go to your auto supply store and get a copy of the Haynes '99 Jeep Cherokee service manual. It has everything in it to help you. Don't panic...take it slow!

DO NOT USE STOP LEAK!!!!!! That stuff has no brain so you cant tell it to plug only specific leaks. It will go for the easiest hole to plug which can be a water port in the cooling jacket for the cyl heads. replace the heater core. Fix it right or bypass but please please please do not use anything that will stop a leak

it is the humidity as if you run your air in the morning or when it muggy/humid it will mist, this is normal. Tim

It sounds like the heater core is leaking engine coolant into the passengers side compartment. White mist could be steam from the hot coolant? The Heater fan could be damaged, or it is a short. Fill your radiator and take it to the shop or replace the heater core.

temp fix is to take both heater core hoses and put them together vent door travel is to long/axle on door vnt is stripped out oractuator motor is.

Seems to be a chronic problem with crank position sensors... On yours it is tested between b&c terminals and should have no continuity there. (should show an open circuit if good)

Water on the floor indicates a heater core leak. You may also find a mist coming from the inside of the car when you run the heat and or AC. If this is the case, have your heater core checked out. Best of luck.
Greg

most shops that have a professional scanner should be able to reset the pass-key part of the ecm,if you need more help get back to me and we'll go from there. Please rate my fix as i strive to be the very best

If it only happened when wet, I'd suspect a bad ground first.