Question about 1997 Lexus LS 400

1 Answer

Controls say air is on full blast but no air is coming out.

From the control panel it appears that it should be blasting out cold air but there is absolutly nothing coming out of the vents at all. also tried hot air but still no luck.

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 33 Answers

Control panel and or switch may be at fault

Posted on Jul 21, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Turned the heater and car off but fan keeps blowing - now cold air - at full blast. had to disconnect battery to get it to stop

car has electronic issues
tow to an auto electrician or impala specific workshop

burnt out fan motor
faulty climate control wiring or sensor
faulty relay
check if direction flap motors or actuators are working



Apr 05, 2017 | 2004 Chevrolet Impala

2 Answers

Air conditioner/Heater

bad hacks, your car is not stock
now you get to find someone that wants to touch a hacked up car.
good luck with that.
bad wiring, or bad hacked in parts.
a motivated tech can find it but will be costly.
$100 hr, here.

Sep 19, 2013 | 2004 Honda Accord

1 Answer

2000 chevy silverado not blowing hot air

1: not enough liquid in the system (air in the heater core)
2: inoperative heater valve not allowing hot liquid into the core
3: hot/cold blend door in the heater box stuck on cold
4: clogged heater core
A clogged heater core will have one hot hose and one significantly cooler hose at the firewall connection; easily tested by hand. a good core will have both hoses very hot to the touch when the heater is on full blast.
Make sure that the system is full and at operating temperature, and the heater controls set on full heat. Feel the hoses at the firewall; if they are both too hot to touch then the problem is in the heater box or controls.

Mar 03, 2013 | Cars & Trucks

1 Answer

Fuel/temp gauges not working. blows hot/cold air full blast all the time. once in awhile digitals start flashing like a strobe.

i just got a 93 deville doing the same thing. I ordered a new body control module online for under $100 so I am hoping that is the problem. It is behind the glove box and control much of the dash information system.

Oct 27, 2011 | 1992 Cadillac DeVille

1 Answer

Heat and aircondition.My heat and air only work on number 5

Sounds like a "fan motor speed controller" or FMSC.
Either that module has gone out...or we're not getting the signal from the control panel sometimes called the EATC.

Lincoln has an EATC (for electronic air temp control)...GMC has something similar.
There is a way to run a diagnostic test of the EATC but am having trouble finding it for GM models.

If EATC test is done and will tell you it failed and would need replacing.
If EATC will tell you it passed and the fan motor speed controller would be at fault.

Usually, when a speed controller fails, the blower motor either doesn't turn OR it runs full blast.
Both parts EATC and the FMSC are expensive.
Since yours is running full least its providing air.
I'd try to run a diagnostic check to be for sure and maybe your parts might be less expensive and available at your local parts store.

Hope this helps...

Aug 13, 2011 | 2004 GMC Envoy

1 Answer

Heater problem, 2 left front vents on dash board are blowing ice cold air + right 2 vents are blowing hot air. is this a possible dial setting/button problem or actual haeater problem. heat was set @...

Most likly this van has seperate controls for driver and passenger heat and ac controls.If its blowing hot air your heat is working.These controls operate differant dampers that are electonicly controlled.If the dials arent working they would cause this problem.

Feb 12, 2011 | 2004 Ford Freestar

1 Answer

Air/heat blower is not working unless it is on high.

The heater resistor is probably faulty, its located near the blower fan

May 23, 2010 | 2000 Toyota Camry

1 Answer

A/C is on and rear heater blows full blast from vent on the sliding doors

I had the same problem and the gear box that opens and closes the valve for the water flow through the heater core was stripped. I had it replaced because it is a bear to get to. Hope this helps.

Oct 08, 2008 | 2001 Ford Windstar

Not finding what you are looking for?
1997 Lexus LS 400 Logo

Related Topics:

157 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lexus Experts


Level 3 Expert

77202 Answers


Level 3 Expert

911 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Are you a Lexus Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides