Heater not working consistently

SJORENEHAN14

MEMBER
2004 LEXUS ES 330
3.3L
6 CYL
2WD
AUTOMATIC
204,000 MILES

My A/C works great, the heat on the other hand works every now and then and when the temperature drops below 40 degrees it does not work at all. What should I do? And one more the blower works just fine on all adjustments.

Thursday, January 3rd, 2019 AT 2:09 PM

1 Reply

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

It sounds like you're having a problem with the blend door actuator. It's a small electric motor that opens/closes door that lets air flow through specific air ducts. Here is a tutorial showing what's involved in its replacement:

https://www.2carpros.com/articles/replace-blend-door-motor

Below I've attached a picture of its location.It's under the middle of the dash on right side.I circled in red its location (A29). Hope this helps and thanks for using 2CarPros.
Danny-

Image (Click to make bigger)