Toyota Sienna owners have reported 4 problems related to defogger heater (under the visibility category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Toyota Sienna based on all problems reported for the Sienna.
2017 Toyota Sienna. Consumer writes in regards to transmission issues. Consumer sent additional correspondence. The consumer stated the steering was imprecise. The vehicle wandered on the road. The heater/ac fan had an annoying noise. The vehicle would not accelerate immediately upon depressing the pedal. The transmission would constantly shift up and down on very small highway inclines.
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all problems of the 2017 Toyota Sienna
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In winter time, only rear vents blow cold air even if the rear thermostat switch on red color. Dealer inspected and said that is normal. Leave the van running for 25 to 40 minutes until get warm air. All last winter I had to turn off rear vents.
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all problems of the 2004 Toyota Sienna
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Coolant dripping under the muffler when the brand new van was driven 955 miles and the dealer still fixing it. This is the third time the van is in the dealer for the same problem and totoally they has spent 15 days. They said it was becasue something was wrong with the rear heater core.
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all problems of the 2005 Toyota Sienna
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Outside vent hose won't stay closed.
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all problems of the 2000 Toyota Sienna
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| Problem Category | Number of Problems |
|---|---|
| Wiper problems | |
| Windshield problems | |
| Power Window problems | |
| Side/rear Glass problems | |
| Visibility problems | |
| Sun Roof problems | |
| Windshield Wiper/washer problems | |
| Interior Rearview Mirror problems | |
| Defogger problems | |
| Defogger Heater problems |