My Toyota highlander, Toyota certified. Our test drive revea
2012 Toyota highlander, Toyota certified. Our test drive revealed A.C. issues which should have been caught during the 160 point inspection but was passed. Our salesman had someone (not in service department, service department is located 4 blocks away, car never left the sales lot that's how I know) add freon. A.C. worked fine on trip home, 40 minute drive. Next day on a 2 hr trip A.C. ran cool, ran very warm 25 times, 2xs very cold, very intermittent. I'm concerned about the real issue as to what's going on with the A.C.. When I took it back to the dealer they told me the issues was over charged so they adjusted the freon level. It seems to be working fine but still not sure if I won't be hit with expensive repairs down the road. With over 6 hrs of A.C. running on over charged freon can that do any damage to the A.C. system?
I think you will be okay, it depends on 'how much' overcharged it is. If it was a few PSI over then you will be okay. These a/c systems operate on/off to account for the overcharge to prevent it from blowing up. If it ran cool constantly the pressure built up would've destroyed something already. I'd ask the reading they got and compare to factory specs. Personally, I'd ask for a written guarentee since this was a fault on their end to cover your A/C system for a period of time. If its not in writing, then you will battle it down the road if it did indeed damage something.
If it is working now, I wouldn't worry about it. It is possible that the evaporator froze up with ice restricting the flow of air causing it to not properly cool the vehicle. The certified warranty should take care of any issues.