SOURCE: Blend door not working.
The bleed door controls air temp not where it comes out, dash, floor, defroster, this is most likely a mode control switch problem, that switch is on the ac control head.
SOURCE: door panel toyota
three steps.
1. locate screw holes for door handle (and other areas maybe) and remove. the screws may be located behind plugs that you remove with small flat screw driver
2. disconnect and remove power lock/window unit, usually pries up from one end (rear of car) and slides out. be careful not to stracth leather or upholstry
3. using screwdriver, pry bar, nail bar or other flat piece of metal pry panel away from door one clip at a time. try to pry near the clip, otherwise you risk damaging the panel's interior
post another problem if you get further and still have trouble.
paul
SOURCE: How to change heater blend doors on 2003 Jeep Grand Cherokee
go to wjjeeps.com there is several pictures and step by step instructions.
SOURCE: 1997 jeep grand air blend door location
The Jeep Grand Cherokee sucks air from the outside via a hole on the passenger side of the cowl. It's under the black plastic piece that runs under the wipers.
The air is then sucked via the blower and blown into the housing where the heater core and A/C evaporator core live.
The blend door is inside this housing as well.
This also depends on if you have regular climate control or the more advanced ATC digital climate control found on some of the Limiteds.
You could possibly take out your glovebox and see if there are any broken pieces going to the door accuator.
Otherwise if it's internal, you'll need to take out the heater/ A/C housing.
To get to this housing, you have to take apart your entire dash, lift the top dash cover off, and then you'll see the housing. You could possibly check for a few thing there.
Most everything there is vacuum controlled.
You have to drain your antifreeze and have your A/C freon discharged (use a professional to capture the freon).
There are 5-6 nuts holding the housing to the firewall. You have to reach these from the engine compartment.
Disconnect your A/C lines and heater hoses. Pull out housing.
This is definately an advanced project, thus the reason for the high pricing.
Hopefully you can get it fixed without having to take this Jeep apart entirely. Try diagnosing with a vacuum gauge if necessary before tearing it apart.
SOURCE: need to disable tire pressure warning light. Air pressure normal
You cannot "disable" the TPWS. Also, when you replace sensors, they need to be programmed to the TPWS computer.
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