As lengthy as her engine is running, there"s warm to it is in had. Shot recalibrating the heater or instead of the mix door actuator if there isn"t heat.

You are watching: Where is the blend door actuator located

Family Handyman
walk your vehicle heater just blow cold air as soon as you turn on the fan? It can be as simple as recalibrating the furnace or instead of the actuator. We"ll present you how.
blend door actuator

Heater blows cold air? locate the mix door actuator

Where is the mix door actuator located? eliminate the gloves box and also under-dash trim panels to find and replace the door actuator.
blend door actuator

Test the door shaft

Remove the screws and lift off the mix door actuator. Twist the door shaft or revolve the link to check out if the door opens and also closes smoothly.

Car not blowing warm air?

Most late-model cars use electrical motors (called actuators) to readjust the air temperature and also direction the the air flow by opening and closing flaps in the heater crate under the dash. If her battery has gone dead, or you’ve disconnected that to occupational on your vehicle and also now girlfriend can’t adjust the wait temperature, girlfriend probably simply need to execute a recalibration.

Find the procedure in a shop hand-operated (at auto components stores for about $20). However if your car heater blows cold air and also you’ve confirm both heater main point hoses to make sure they’re hot, you likely have actually a bum blend door actuator. You can usually diagnose and fix the problem yourself in around an hour. A brand-new door actuator costs less than $100. All you require is a shop manual, a 1/4-in.-drive socket set and screwdrivers. Here’s how.

Consult the repair hands-on to recognize which actuators regulate the defrost-vent-floor “mode door” and also the temperature-regulating “blend door.” then peer under the dash and also locate the doubt actuator top top the heater box. Have actually a girlfriend switch in between modes or temperatures while you watch the actuator. If the actuator doesn’t move, it’s more than likely bad.

There’s a possibility the setting or blend door actuator may be good but the door or affiliation is binding, so examine it before you change the actuator (photo above). If the door binds, take it to a agree for replacement. However, if it moves smoothly, purchase a new blend door actuator from the dealer or auto components store. Download it and also test the operation. In some cases, you’ll have to perform a calibration.

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Required tools for this Project

Have the vital tools because that this DIY project lined up before you start—you’ll conserve time and also frustration.Socket/ratchet set You’ll likewise need a flat-blade screwdriver and also a Philips-head screwdriver.