I'm considering an 05 LX with 260k and did a Facetime inspection with the current owner. Asked to see AHC work. Owner fully expected that it would, apparently it has functioned fine before although he says he leaves in N all the time. Anyway, at first it did not want to adjust- flashing lights on both H and L. After a couple tries it successfully went into H, vehicle was noticeably higher and H light locked on. But it would not go into L during our call. If what he says is true then it has not been cycled for some time, and the air temperature was very cold. Are either of these causes for AHC misbehavior? Other ideas about what might be wrong? I don't have the detailed records but it sounds like globes were replaced in 2022 so it had at least some kind of service a that time. I did not check fluid level but owner is pretty particular about his fluids, I'd be very surprised if it was low. Also the truck is not rusty.
What could be wrong and how concerned should I be?
What could be wrong and how concerned should I be?