After Driving for 7 hours, the car starts pumping COLD air into the cabin with the heat on.

Asked by Jan 02, 2017 at 12:50 PM about the 2003 Lexus ES 300 Base

Question type: Maintenance & Repair

I was driving from NY to MD, about 7 hours total, and at the beginning of my
trip the car heat was working. It normally gets too hot, so i turn it off
occasionally. Toward the end of my drive, I turned the heat on and it was
blowing COLD air at me. I tried letting it run for a while and changing the
settings but all of the air was cold, after a long drive. The engine was clearly
warmed up. Help!

4 Answers

254,835

Coolant level might be low. Is there coolant in the reservoir by looking at it? Don't remove the cap till the engine has cooled down.

Thank you for replying! I did go and check the coolant- its totally empty. I called my mechanic and he suggested I probably have a leak. Any idea what these things take to repair?

76,975

Check the radiator hoses and the radiator for leaks, maybe they need replacing but if the leak is really small I would try Alumaseal and see it that stops the leak.

76,975

Be sure and replace the coolant with 50/50 water and anti-freeze or even a higher ratio of anti-freeze since you live in a cold winter area. The bottle will tell you the proper ratio for your low temperatures.

Your Answer

ES 300

Looking for a Used ES 300 in your area?

CarGurus has 6 nationwide ES 300 listings starting at $2,900.

Postal Code:

Lexus ES 300 Experts

  • #1
    Tom Demyan
    Reputation
    1,330
  • #2
    rockajean
    Reputation
    460
  • #3
    Scott Vetter
    Reputation
    410
View All

Related Models For Sale

Used Lexus ES 330
11 listings starting at $4,988
Used Lexus GS 300
11 listings starting at $7,995
Used Toyota Camry
63 Great Deals out of 1,971 listings starting at $750
Used Lexus IS 300
64 listings starting at $3,888
Used Honda Accord
87 Great Deals out of 1,051 listings starting at $1,200
Used Lexus RX 300
9 listings starting at $3,900
Used Acura TL
23 Great Deals out of 262 listings starting at $3,444
Used Honda Civic
302 Great Deals out of 3,466 listings starting at $995

Used Cars For Sale

2003 Lexus ES 300 Base For Sale
4 listings starting at $2,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.