I have a 2010 Toyota Sienna and the heater is not heating as it should. What may be the problem?

Asked by Jan 08, 2013 at 10:24 PM about the 2010 Toyota Sienna CE

Question type: Maintenance & Repair

After a period of time the air is still cool and not much heat is coming out of the heater vents.

3 Answers

104,725

Is the engine up to temperature? If not, it could be a open thermostat. If it is hot, your water pump may not be pushing enough coolant or the heater core is clogged.

1 of 1 people found this helpful.

or...the valve that allows hot water in to heater core is faulty, not opening, either because of the linkage to it or the valve itself. 2010? Warranty? But is seems you have two problems...cold air and not enough flow..both...makes me wonder if something is obstructing the heater core air flow, like a piece of paper even, big enough to cover all or most of the core. Try the A/C for a minute see what happens

2 of 2 people found this helpful.
945

Both of the above answers are good advice. The other area to check is the control box usually under the dash which has flaps which control where the air goes, and some method of controlling those flaps. Even if your heater core is getting warm water from engine, if the air is not directed over the appropriate area, this could also be an issue. Fan is working right?

2 of 2 people found this helpful.

Your Answer

Sienna

Looking for a Used Sienna in your area?

CarGurus has 20,533 nationwide Sienna listings starting at $1,695.

ZIP:

Toyota Sienna Experts

  • #1
    Mik00000
    Reputation
    1,660
  • #2
    Tom Demyan
    Reputation
    1,220
  • #3
    dandyoun
    Reputation
    990
View All

Related Models For Sale

Used Honda Odyssey
386 Great Deals out of 31,585 listings starting at $1,990
Used Toyota Highlander
516 Great Deals out of 42,668 listings starting at $2,009
Used Toyota Camry
1,061 Great Deals out of 77,381 listings starting at $1,100
Used Honda Pilot
583 Great Deals out of 37,480 listings starting at $1,995
Used Dodge Grand Caravan
196 Great Deals out of 34,797 listings starting at $1,900
Used Toyota RAV4
638 Great Deals out of 62,260 listings starting at $1,995
Used Kia Sedona
103 Great Deals out of 7,453 listings starting at $700
Used Nissan Quest
62 Great Deals out of 2,732 listings starting at $2,500
Used Toyota 4Runner
335 Great Deals out of 29,411 listings starting at $1,500
Used Chrysler Town & Country
163 Great Deals out of 13,768 listings starting at $1,496
Used Toyota Corolla
904 Great Deals out of 70,313 listings starting at $1,479
Used Toyota Tacoma
550 Great Deals out of 41,422 listings starting at $2,500
Used Honda CR-V
712 Great Deals out of 62,461 listings starting at $1,495
Used Toyota Sequoia
113 Great Deals out of 4,956 listings starting at $2,499

Used Cars For Sale

2018 Toyota Sienna For Sale
5,960 listings starting at $29,313
2017 Toyota Sienna For Sale
20 Great Deals out of 2,860 listings starting at $20,495
2016 Toyota Sienna For Sale
57 Great Deals out of 1,800 listings starting at $15,499
2015 Toyota Sienna For Sale
81 Great Deals out of 2,413 listings starting at $12,923
2014 Toyota Sienna For Sale
47 Great Deals out of 1,159 listings starting at $9,995

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.