Question about 2007 Lexus IS 250

Open Question

Mildew smell coming from A/C

There's a weird mildew smell coming from my A/C... the smell is stronger on the passenger side.... what can i do to get rid of the smell? the dealer has tried de-odorizing the car and they also replaced the a/c filter... it helped but the smell is still there

Posted by on

  • Anonymous Jan 16, 2009

    I have the same problem. I think there was a leak in my air conditioning system and it made the car smell like mildew. I have had lexus replace my air conditioning system and evaporator and the smell still persists. I am working on filing a lemon law compliant becuase this has been going on for 2 yrs.

  • okinsnj Mar 20, 2009

    I owned a 2004 SC 430 that had the same odor coming from the A/C. The first thing the dealer did was change the cabin filter, but that did nothing, as that filter ONLY filters the air entering the cabin from the outside, and my problem was coming from recycled air. After about six months of complaining, mold was growing across the climate control to the point where it was unreadable in sunlight.

    By the time Lexus finally changed out the A/C unit (a year later) it was too late, my health was already ruined. Lexus has tried to cover-up the whole thing in my opinion, even going so far as tampering with evidence that in my case, could have possibly improved my chances of recovery.



Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

Burning smell

If it smells like burning a burning plastic/ceramic then your brakes are locking up and burning. Next time it does it, see if the smell is coming from the rear tire. if so, its time for a brake job

Nov 11, 2013 | Acura Cars & Trucks

1 Answer

Drain plug for the A/C on my 2000 Hyundai Accent

Its a hose at the front of where the passengers feet area under the hood. Usually the problem is water holds and leaks on the floor. A repair shop may have a spray that they can coat the evaporator and kill the smell.

May 14, 2010 | 2000 Hyundai Accent

1 Answer

Window fogs up after driving for awile. Just

The mildew smell you refer to could be anti-freeze. When a heater core starts leaking it may allow anti-freeze (which circulates through it for heat) to be blown through the ducts onto the windshield in defrost mode. The repair is to have the heater core replaced. It may wait for the thermostat to open and allow the coolant to circulate before you notice it. Occasionally the carpet on the passenger side may be wet from leakage.

Dec 12, 2009 | 2001 Chrysler 300M

2 Answers

Bad smell in air vent chevy impala


Oct 05, 2009 | 2007 Chevrolet Impala LS Sedan New Cars

5 Answers

2005 Toyota Corolla - car smells after rains

Look under the passenger side of the dash, behind the carpet. Feel the back side of the carpet for dampness. If so, try this: In the same area, look for a black rubber hose that comes from the heater plastic box, and pokes thru the firewall. See if it is plugged up. This is the drain pipe for the AC box, and the cowl panel if the side drains are plugged up. Try that, and please get back to me.

Sep 16, 2009 | 2005 Toyota Corolla

2 Answers

09 sonata with 1000mils on it with a/c off foul smell comes from ventilation system with fan on. no problem when a/c is on

Does it smell like a dead animal? or just moldy mildew smell? If dead animal, get it out. If mold/mildew smell, treat it with an AC ventilation dodorizer.

Sep 07, 2009 | 2009 Hyundai Sonata

1 Answer

2004 Ford Focus - heat is not working

sounds like the blower motor has burned out, that would account for the weird smell as u say, the blower motor is on the passenger side under the dash.

Mar 28, 2009 | 2004 Ford Focus

1 Answer


Your catalytic converter could be your problem. Or you have a family of dead rodents in your engine.

Oct 08, 2008 | 1999 Dodge Grand Caravan

1 Answer

Air Conditioning leaks under carpet filling passenger floor with water

The AC condensate drain hole/tube is plugged, the drain is on the passenger side under the car close to the firewall.

Oct 27, 2017 | 2008 Chevrolet Malibu

Not finding what you are looking for?
2007 Lexus IS 250 Logo

Related Topics:

802 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lexus Experts


Level 3 Expert

77169 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