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Wow, exactly the same problem we are having, 2008 sienna, last year under warranty we had one ac line replaced...this summer, due to corrosion of lines, we have 3 lines needing replacement..toyota and th dealer offered a good will plan and paid 50% of the cost, it still cost us over $1900.00 in parts and repairs...can't imagine paying the full $4,000.00.. But, for a 3 year old van with only 52,000 kms on it, this is obviously a design flaw. Apparently these connections are behind a wheel hub, that, obviously allows debris, salt, snow to corrode these lines. I contacted Toyota Canada and Toyota U.S. to no avail, they claim that this is not an issue with many Siennas?! I explained we have had Toyotas in the same house, driving on the same roads for the past 20 years, and, have never had this issue...we were thrilled with Toyota....until now....Report it
It sounds like that dealership more than ripped you off. That repair would never cost $4,000. In fact even $1000 would be a lot. What your describing is a common problem area of the A/C system in this model from 2006-2009. To fix you have to clean off the corrosion around the fitting, then replace the o rings(which cost a couple of dollars), and recharge the system with 134a coolant. Cleaning the corrosion off, however, can take four or five hours.Report it
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