Having problems with your 2003 Toyota 4Runner ?
Why does my 03 4runner blow heat on drivers side vents and cold on pass. side vents when a/c is on?
Check your freon. I just had the same problem and when the dealership told me that, I thought it didn't make sense. Well after having my dash apart and nothing wrong was found... charged the freon and guess what.... it works great now!
Repair Help & Product Troubleshooting for 2003 Toyota 4Runner
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