Visibility: Defroster/defogger system:windshield:blower blend door failure - tsb

- Roswell, GA, USA

The automatic HVAC system on my Jeep Grand Cherokee has broken. The "blend doors" that control hot vs. Cold air do not function properly. As a result, cold air is blown when hot air is required. This is a known issue that thousands of owners are experiencing on their wj limiteds and overland editions. This can create a dangerous situation by not blowing hot air required to defog the windshield. The issue only occurs on models equipped with the automatic HVAC system.

- Springfield, OH, USA

Visibility: Defroster/defogger system:windshield:blower. Heating system continues to fail which presents a safety hazard when I'm driving and the windows become fogged over. Some days the defroster works but most of the time it does not. The unit continually blows cold air out even if the heater is on.

- Northford, CT, USA

Both blend doors and/or HVAC door stops have gone out. No, heat which means no window defrosting.

- Poway, CA, USA

Very unsafe malfunction of the "blend doors" in my heater mechanism. My father's 2003 has the same problem. Heat and defrost air only comes out one side, can't see out all the windshield!!! dealer knows about the problem, says if you only have one bad one, might as well replace them both with the new redesigned parts for $1600 - $1800. Help!

- Virginia Beach, VA, USA

Climate control unit faulty, "common" fault with this vehicle make / type, climate control unit unable to maintain temperature, blows cold when it shouldn't be, I am informed it is a fault with the blend doors, and to repair is very very costly as the whole dashboard has to be removed, parts are available but cost of repair is very expensive.

- Flintshire, Uk, 00, USA

The heater fan in my 1999 Jeep Grand Cherokee stopped working and there was a burning smell in the car. Mechanic found that the fan resistor (computer) and pigtail that connects to it were burned up. He checked with Jeep and there are 3,000 of these items back ordered because this is a problem on many of these vehicles. Its winter and 17 degrees in my car I could freeze with my family or my dashboard could catch on fire.

- Layton, UT, USA

Visibility: Defroster/defogger system:windshield:blower ac/heater/defroster blower no longer operates properly. Ac self-diagnostic codes indicate "temp door/recirc door travel too large". no combination of control settings will make the blower/fan operate.

- Roxboro, NC, USA

This is concerning a 1999 Jeep Grand Cherokee limited edition, I am writing due to repeated problems with the defrost control inability to clear or keep clear the windshield. Cold outside air blows from the defrost vents, and does not clear the windshield of frost or moisture, or causes moisture to re-freeze. This is caused by the failure of the blend doors in the heating system. This occurs while driving after allowing the vehicle to warm and the windshield to clear. This is a re-occurring problem, the dealers service manager says that all wj series Jeep Grand Cherokee with the dual climate control will have this problem and will cost between $1200 and $1800 to repair and that the repair is not permanent, just a fix until the parts breaks again. At this time this has not been repaired at the advice of the service mgr of my Jeep dealer, he recommended filing this complaint as he says there should be a recall on this issue.

- Greenville, IN, USA

The climate control on my 1999 Jeep Grand Cherokee will randomly create loud creaking and crunching noises from under the dash and will cause a sudden drastic temperature change. This causes the defroster not to operate correctly and the windows to instantly fog up. This first occurred in October of 2005 and has happened over a dozen times reducing my visibility sometimes to nothing at all. The dealer cannot find any problems and will not investigate any further.

- Hackettstown, NJ, USA

Blend door broke on passenger and driver vents. Blows only cold air.

- Detroit Lakes, MN, USA

Blend door failure causing fogging of windshield.

- Quakertown, PA, USA

The HVAC system on my 99 Jeep Grand Cherokee is faulty.

- Sioux Falls, SD, USA

Wj Jeep Grand Cherokee blend door breakage/failure visibility: Defroster/defogger system:windshield:blower.

- Southbury, CT, USA

Defroster/defogger in my 1999 Jeep Grand Cherokee limited is non-functional. The passenger side has no heat at all, but my main concern is the defroster which makes it impossible for me to see out of my windshield now that colder weather is here.

- Lake Havasu City, AZ, USA

The A/C heat blend doors on my 1999 Jeep Grand Cherokee ltd. With only 61,000 miles have failed and the system only blows cold air. This is very dangerous in winter driving conditions and as I read online it happened to almost 100% of these vehicles after they pass 50K miles. My father has a 2001 and has had the exact same issue. The repair is $1,800 and even the dealership told me it happens to all models 1999 through 2002 or 3. this should be a recall item not a chance for Jeep to make money off of a factory defect.

- Laguna Beach, CA, USA

My vehicle has the exact same problem as another vehicle manufactured by the same company (daimler Chrysler), that vehicle is a 2002 Dodge Ram, the NHTSA campaign id number is 03V078000. On my vehicle the connection for the blower motor controller is undersized, with heat from the electrical current the connector loosens and causes the blower motor to cut out, it also causes melting to the blower motor controller itself and the electrical connections. For the mentioned recall daimler Chrysler installs a wiring harness overlay, the solution to my problem is the same, they make a wiring harness overlay, the problem however is that the heat from the electrical current damages the blower motor controllers housing and electrical connections, which means that this part needs to be replaced as well in order to correct the problem. The consequences to this failure is that the blower motor becomes inoperable and during times when the defrost is necessary such as cold weather, the blower motor can cut out and reduce visibility. If you read my complaint you'll see it's the exact same problem as the recall I've mentioned. I have researched and investigated this situation thoroughly and am sure it's the same. I only found out about the other recall because I was explaining the problem to my brother who owns a 2002 Dodge Ram and he told me it sounded exactly the same as his problem that was a recall, so you can see that it clearly is the same problem.

- San Antonio, TX, USA