So if the heater works great when the engine is working and blows cold air when it's not running does that mean that something is wrong with the electric coils are supposed to take over heating?

50

Asked by Nov 11, 2014 at 11:35 PM about the 2006 Toyota Highlander Hybrid Base AWD

Question type: Maintenance & Repair

The heaters works great as long as the engine is running, but the moment the engine stops and the electric takes over it changes to cold air - almost like the A/C takes over.  So does that mean the coils, that someone mentioned should take over heating the cab when running electric, are bad or the circuit are broke?

10 Answers

38,245

The engine heats up the inside of the car but only when it's running. There's no electrical coils, know what I mean Vern?

1 people found this helpful.
50

BoholMark - your answer puzzles me and here is why: Last night I read part of another question about the heater system in the Toyota Highlander Hybrid and one of the answers they received spoke about an electric heater system. As a matter of fact here's what they had to say about it - FordNut answered about a week ago - Yes, dandyoun is right. The hybrid uses engine heat, just like any water-cooled car, to heat the cabin. But in the hybrid, there are electric heating elements in the heater core, to help hold heat when engine is not running and car moving. Also a ceramic-shrouded electric heat element in the dash for defrost, but still, it will take a few minutes. These electric heaters draw a lot of power, and operate off the same batteries and generating system that powers the car, and will be heated for only a short time if engine is not running. Regardless, there will never be instant cabin heat - This is why I asked about the heater core system. So if you are telling me there is no electric heater core system then can you help me understand why when I'm driving and the actual gas engine is operating I have heat and all of a sudden there is no heat and cold air was all that was coming out (almost like the A/C was on). I looked and notices the suv was running on electric only. So if I'm no a long trip and the heater system is fluctuating between hot and cold, then that could be a pretty miserable trip. So do you have any idea why it keeps going from hot and cold? Also any idea of how to keep it from going from hot to cold so the temp will be a little more stable? Know what I mean?

5 people found this helpful.

LOL. "Know what I mean Vern - it works because its from Newhart and your name is Vern! Classic. Anyway, I play an expert on TV, and it sounds like you took offense to the first answer. Here's where you're misunderstanding -- The "coils" offer supplimental heat when the gas engine is "off" as in, the electrical system is propelling the vehicle and the gas is coasting. When that happens, there is no engine heat to blow into the car (that's how the heater works, its just the waste heat off the engine block) so the coils activate to take over the load. They are able to recharge by starting the engine for energy and by taking brake regeneration power. But they would not work when the car is actually "Off". Because there is no gas engine running to recharge battery. Otherwise the heating elements would completely drain your juice in a matter of minutes. Since a regular car does not heat up unless it is on, the designers of the hybrid system probably reasoned that there was no need to fully drain the battery to provide 10 minutes of heat when the engine was off. (In other words, you need to turn on the car, and expect the gas engine to kick in if you are using the heater while idling. If that's not happening, then you have a completely different problem.)

Upon rereading the problem, it sounds like a different problem. There should probably be heat coming in when the car is "on" but the electric is the propellant. Hope you got it fixed. Let us know what it was and how much it cost!

Vern, did you get it fixed? And if so, what was the issue and how much was it? I drive an 08 Camry Hybrid that does the same thing. Heat works great while driving around, but as soon as I come to a stop or park (when car goes into E mode), the heater starts blowing cold air. I live in Alaska - this is NOT acceptable!!

I am having the same problem! I have not seen an answer yet. Trying to avoid going to dealer and paying tons of money.

20

Jen17969 did you figure it out on your car? we have an 09 Camry Hybrid and it is doing the exact same thing and we also live in Alaska.

Josh, no answer yet :(

I'M AT WORK BEFORE THE HEAT STARTS WORKING ON MY HYBRID HIGHLNDER. IT TAKE AT LEAST 15 -20 MINUTES BEFORE THE FAN GOES ON.

20

Alright guys and gals I felt like an idiot on this issue. My car is now fixed but it cost me almost $500 from the dealership. Don't worry you can do it yourself for a fraction of the cost. Because it is a hybrid I didn't know that there were two different reservoir tanks for coolant. I just looked under the hood and saw the "hybrid coolant system on top". The main engine coolant was tucked away on the passenger side and was nearly empty. So they flushed my coolant system and heater works great. I would have done this myself had I known and had a heated garage to work in.

2 people found this helpful.

Your Answer:

Highlander Hybrid

Looking for a Used Highlander Hybrid in your area?

CarGurus has 2,474 nationwide Highlander Hybrid listings starting at $3,850.

ZIP:

Toyota Highlander Hybrid Experts

  • #1
    F_O_R
    Reputation
    130
  • #2
    Markw1952
    Reputation
    100
  • #3
    dandyoun
    Reputation
    80
View All

Related Models For Sale

Used Toyota Highlander
389 Great Deals out of 51,407 listings starting at $2,000
Used Honda Pilot
374 Great Deals out of 44,331 listings starting at $1,900
Used Toyota 4Runner
268 Great Deals out of 34,349 listings starting at $1,995
Used Toyota Camry
761 Great Deals out of 72,913 listings starting at $1,000
Used Toyota RAV4
518 Great Deals out of 78,882 listings starting at $1,995
Used Toyota Sienna
242 Great Deals out of 22,649 listings starting at $2,490
Used Honda CR-V
629 Great Deals out of 77,126 listings starting at $1,192
Used Acura MDX
295 Great Deals out of 16,043 listings starting at $1,990
Used Toyota Prius
145 Great Deals out of 17,767 listings starting at $1,000
Used Lexus RX 350
345 Great Deals out of 17,462 listings starting at $3,000
Used Ford Explorer
874 Great Deals out of 67,607 listings starting at $800
Used Toyota Sequoia
84 Great Deals out of 5,151 listings starting at $2,950

Used Cars For Sale

2018 Toyota Highlander Hybrid For Sale
1,793 listings starting at $35,305
2017 Toyota Highlander Hybrid For Sale
73 listings starting at $37,954
2016 Toyota Highlander Hybrid For Sale
60 listings starting at $32,680
2015 Toyota Highlander Hybrid For Sale
65 listings starting at $27,995
2014 Toyota Highlander Hybrid For Sale
23 listings starting at $27,993

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.