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

102,725

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.
915

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 23,836 nationwide Sienna listings starting at $999.

ZIP:

Toyota Sienna Experts

  • #1
    Mik00000
    Reputation
    1,620
  • #2
    Tom Demyan
    Reputation
    1,200
  • #3
    dandyoun
    Reputation
    980
View All

Related Models For Sale

Used Honda Odyssey
437 Great Deals out of 31,100 listings starting at $1,950
Used Toyota Highlander
602 Great Deals out of 36,088 listings starting at $1,500
Used Toyota Camry
1,051 Great Deals out of 87,036 listings starting at $1,296
Used Honda Pilot
672 Great Deals out of 41,181 listings starting at $300
Used Dodge Grand Caravan
473 Great Deals out of 29,264 listings starting at $2,233
Used Toyota RAV4
834 Great Deals out of 51,464 listings starting at $1,600
Used Kia Sedona
165 Great Deals out of 7,265 listings starting at $2,750
Used Chrysler Town & Country
346 Great Deals out of 13,445 listings starting at $1,999
Used Toyota 4Runner
348 Great Deals out of 26,295 listings starting at $1,800
Used Toyota Corolla
972 Great Deals out of 63,761 listings starting at $1,850
Used Nissan Quest
100 Great Deals out of 2,928 listings starting at $2,500
Used Toyota Tacoma
698 Great Deals out of 45,608 listings starting at $2,500
Used Toyota Sequoia
136 Great Deals out of 5,229 listings starting at $1,500
Used Honda CR-V
858 Great Deals out of 59,622 listings starting at $1,495

Used Cars For Sale

2018 Toyota Sienna For Sale
1,793 listings starting at $30,163
2017 Toyota Sienna For Sale
30 Great Deals out of 9,348 listings starting at $21,500
2016 Toyota Sienna For Sale
108 Great Deals out of 1,979 listings starting at $15,895
2015 Toyota Sienna For Sale
99 Great Deals out of 2,640 listings starting at $11,900
2014 Toyota Sienna For Sale
73 Great Deals out of 1,614 listings starting at $10,900

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.