Automatic climate control temperature control blend doors broke, leaving me without defrost. The windshield was icing up on the driver's side while driving in sleet.

- Liberty, MO, USA

Failure of climate control system - vents get "stuck" in the wrong position so that system heats in the summer or will not heat in the winter. Vents that air comes out of is not controllable with normal knob positions. May only affect one side of car or may affect both. Random behavior over many months.

- Lincoln University, PA, USA

99 Jeep Grand Cherokee HVAC system failure. Blend doors allow ac to be on when the heat is on allowing the windshield to freeze/fog in the winter and fall. The dealer and Chrysler knows there is a flaw with all of these cars. Makes for very unsafe driving half of the year if you can't see out the windshield.

- Spokane, WA, USA

I have a Jeep Grand Cherokee ltd 1999 with no heat or defrost in driver side was told by dealer it would cost between 1200 and 1500 to fix I am out of extended warranty but I feel this is a safety concern to to defroster not working I know I am not alone with this problem please help!!!!!!!!!!!!

- Norristown, PA, USA

The "blower control module" is the electronic component responsible for adjusting the fan speed for the HVAC on vehicles equipped with the automatic climate control. It is a well known problem that these units fail. It has failed on my vehicle. My own independent mechanic has replaced quite a few of them. The wiring harness and plug that supplies power is not heavy duty enough and it overheats and melts and could cause a fire. It can be further exaggerated if the blower collects debris and draws more current. Once it fails the blower will no longer operate. This makes the defroster unavailable, which could create very unsafe driving conditions should the windows fog up. Chrysler has a redesigned unit with a new harness so it is obviously a problem they are already aware of. I'm in the process of having the new parts installed and the old parts will be available. Here's a write up of how to fix it yourself. www.wjjeeps.com/blower_motor.htm

- Laguna Niguel, CA, USA

I am not sure this is the correct place for this so if not maybe you could direct me to the proper place for my complaint.I have a 99 Jeep Grand Cherokee about 20 months ago the blend doors in the automatic climate control broke the cost for this was around $1000, last month the same problem occured and Jeep being aware of the problem updated the part so as to not fail so easily in Jan 2004. I still had to pay for a complete repair again. My question is there anyway to get someone involved that can look into this poorly engineered item. Sincerely daniel knight.

- Oakland, OR, USA