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fairly significant
Typical Repair Cost:
No data
Average Mileage:
36,488 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2004 Toyota Sienna AC / heater problems

AC / heater problem

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2004 Toyota Sienna Owner Comments

problem #1

Apr 272007

Sienna XLE V6

  • Automatic transmission
  • 36,488 miles


Each summer when the A/C is running, there is a noise coming from the mid rear of the mini-van. It is sometimes very loud and sometimes very soft. It can last a few seconds. It can be short sessions. There is really no consistency except occurs in the summertime only when the A/C is running. It can be considered a hum, whooshing, or a poor instrument sound. We even recorded the sound for the dealership and they have yet to find out what the problem is. Parts that have been replaced are the motor sub assy b x 2 and cabin air filter replacement. They say if there is every a "trouble-shooting" log of it, they will replace it for free since the car is no longer under warranty. We'll wait and see. We now have more noise coming through the A/C unit so we assume, the noise will stop when the A/C blows up. If anyone has this problem and has found a resolution, please let us know.

- , Gastonia, NC, USA

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