Does anyone have this problem in your 03/04 4Runner?

[pwanghk]

Greetings:

There seems to be a problem on the fan - position control on my 04, 4x4, V6, 4Runner (2700miles purchase on November 03). Effectively, when the car is cold (usually overnight in parking space or during working hour where the car hasn't been driven for at least 7~8hours) with the fan set to III, Air flow toward Cabin / Feet, later on switch to Defogger then Defogger / Feet. The fan noise run very quietly at first like in II position. After awhile, the fan noise (or may be the air noise ) increases, like switching fan speed from II to III. I haven't found all the sequence and other combination to make sure it's the only position function this way. The tech said it does that when the the Auto is engaged. The problem is I never use the Automatic setting and recycle. I always adjust fan speed and air flow position manually.

I already record this phenomenon to an electronic recorder. I will also take a picture of my settings as well. This way I probably have some proof that I am not crazy.

Your feedback is greatly appreciated.

 

[4Runner4UGA]

I actually believe that there are more speeds for the fan to be in than 1,2,3,or 4, on auto sometimes it will change pitch and the speed will increase/decrease slightly but will still show the original speed on the indicator. And I think that even though you are not in auto mode, it might still change your fan speed slightly. Hope this helps.

 

[03RoadRunner]

That's TOYOTA for YA!!!

Build a great car, but they do stupid things like "making "auto" climate control a puzzle to figure out".

I still love my runner...but have to admit the "AUTO" climate control drives me nutz...especially while driving and adjusting it.

Oh well.
03RR

 

[pwanghk]

Thank you for your input.

So, it's pretty much normal operation, I guess.

If so, how come it happens only in this sequence (Cabin / Feet - Defogger - Defog / Feet), the car is cold started then approx 1/2H later, it increases the fan speed or open the flap duct toward the windshield. I hear the air flow noise increases toward the windshield and just guessing that either the fan speed in increased or a conduit flap has been opened to let the air flow more. I will try different combination and see if it still does the same thing.

Anyway, will keep you posted if I find out something.