Blower motor air flow control

Jlanning13
0

Asked by Nov 17, 2012 at 03:16 AM about the 1999 Lexus RX 300 Base AWD

Question type: Maintenance & Repair

I replaced my blower motor controller today.  The air conditioner and heat is now blowing, but only from below where the feet vents are, there is no air flowing to the dash or vents by the windshield. I am unable to control the airflow.  I can control the air speed via the mode control knob, but not where it is going. I am unable to change the area to which it is to flow.  The arrows do change to different areas being the feet, chest, or windshield or both pertaining to the stick figure via the control knob showing where the air is to go, but it doesn't actually change levels or vents.  Also I see a site on the internet for a chip that is available to increase my gas mileage by 7 mpg's and slight increase in horsepower.  Is this true for the price of $65 per chip or will it cause issues with my fuel injection or other problems.

2 Answers

jwhalen70
930

Im not sure about how ur lexus is set up, but the vehicles i have worked on, all of the doors in ur heat system, are ran off vacumn controls, i had one that was not working like that, would only blow air from the floor, well it turned out that one of the vacumn tubes got pinched off under a bolt, from a different repair, so somewhere to start. Im not sure if thats possible with what you had to do to replace ur switch, but if u had a lot of bolts to remove or somehow lines are pinched, that could be ur issue. Good luck.

Sparky222
2,925

I helped a co-worker with her 99's climate system. This is elaborate mechanically, accessed behind the glove box. The mode servo (floor/vent/defrost/mix), is likely, since air direction is the issue here. Lexus does not use vacuum lines, but electronics and motors to open and close those air doors. The servos run over $100, and while the repair is not difficult, access is, and quite involved. A Toyota dealer can repair it, or Toyota independent specialist, and for way less than a Lexus dealer.

5 out of 5 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Lexus RX 300 Questions

Lexus RX 300 Experts

#1 Rx300_21001
Rx300_21001
Reputation 1,460
#2 John Orlando
John Orlando
Reputation 820
#3 mrsvirtuous
mrsvirtuous
Reputation 490
View All

Related Models For Sale

Used Toyota Camry"
926 Great Deals out of 75,436 listings starting at $900
Used Lexus ES 300"
19 Great Deals out of 1,343 listings starting at $2,000
Used Honda CR-V"
578 Great Deals out of 61,297 listings starting at $1,495
Used Toyota 4Runner"
222 Great Deals out of 13,104 listings starting at $2,000
Used Toyota RAV4"
445 Great Deals out of 38,859 listings starting at $1,850
Used Jeep Grand Cherokee"
780 Great Deals out of 67,087 listings starting at $900
Used Honda Accord"
599 Great Deals out of 71,690 listings starting at $999
Used BMW X5"
261 Great Deals out of 10,517 listings starting at $2,799
Used Mercedes-Benz M-Class"
239 Great Deals out of 7,030 listings starting at $2,995

Used Cars For Sale

2003 Lexus RX 300 Base AWD For Sale
5 Great Deals out of 98 listings starting at $995
2002 Lexus RX 300 Base AWD For Sale
144 listings starting at $2,000
2001 Lexus RX 300 Base AWD For Sale
150 listings starting at $3,500
2000 Lexus RX 300 Base AWD For Sale
6 Great Deals out of 189 listings starting at $2,495
1999 Lexus RX 300 Base AWD For Sale
139 listings starting at $2,800