2007 toyota 4 runner heater core

Asked by Jan 06, 2018 at 02:13 PM about the 2007 Toyota 4Runner

Question type: Maintenance & Repair

Bought a 2007 4 runner about 3 months ago.
Inside if windshield keeps getting really dirty/hazy
within about 3 days of cleaning. Cabin filter is
clean. Heat and defrost are working but pretty sure
we smell antifreeze. Any other ideas before I take
my whole dashboard off or paysome way to much
to do it?

6 Answers


Are you losing coolant too? If so it's going to be the heater core. HTH. -Jim


yes make sure your not loosing coolant. but you said you just bought it right? iv'e known of a few cleaners that detailers use when the sun hits it through the windshield the vapors from the chemicals will rise onto the windshield causing a haze. just putting that experience out there.


Definitely heater core leak, due to the film and smell of antifreeze, probably a small one.

1 of 1 people found this helpful.

Ya not seeing coolant leak anywhere else so I wasnt sure. Someone was telling me there was no way it was the heater core is it wasn't leaking on the floorboards. I definitely thought it was something they cleaned with at first, but have cleaned the window 10+ times since I bought it and it just keeps coming back. Using safelight window cleaner since my roommates work there.

So how big of a pain in the butt is it to do yourself? Both roommates have some mechanical experience and I really don't wanna pay like $800


wait to make sure you are leaking. that's a lot of work if your not sure.

Your Answer


Looking for a Used 4Runner in your area?

CarGurus has 529 nationwide 4Runner listings starting at $4,995.

Postal Code:

Toyota 4Runner Experts

  • #1
    Kurt Burton
  • #2
  • #3
View All

Related Models For Sale

Used Toyota Tacoma
30 Great Deals out of 1,345 listings starting at $6,900
Used Toyota Highlander
13 Great Deals out of 1,022 listings starting at $4,950
Used Toyota Tundra
49 Great Deals out of 1,547 listings starting at $5,999
Used Jeep Grand Cherokee
149 Great Deals out of 3,998 listings starting at $2,400
Used Chevrolet Tahoe
5 Great Deals out of 908 listings starting at $8,500
Used Toyota RAV4
46 Great Deals out of 3,142 listings starting at $4,799
Used Toyota Sequoia
8 Great Deals out of 85 listings starting at $5,950
Used Honda Pilot
5 Great Deals out of 606 listings starting at $3,490
Used Toyota FJ Cruiser
3 Great Deals out of 61 listings starting at $10,888
Used Ford F-150
522 Great Deals out of 10,138 listings starting at $3,490
Used Jeep Wrangler Unlimited
144 Great Deals out of 6,420 listings starting at $9,995
Used Ford Explorer
35 Great Deals out of 1,623 listings starting at $4,500
Used Toyota Camry
37 Great Deals out of 1,947 listings starting at $1,995
Used Nissan Pathfinder
19 Great Deals out of 1,359 listings starting at $3,888

Used Cars For Sale

2018 Toyota 4Runner For Sale
209 listings starting at $45,440
2017 Toyota 4Runner For Sale
36 listings starting at $39,900
2016 Toyota 4Runner For Sale
67 listings starting at $34,998
2015 Toyota 4Runner For Sale
71 listings starting at $29,814
2014 Toyota 4Runner For Sale
32 listings starting at $29,988

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.