8AT Aisin UA80F
The 8AT Aisin UA80F gearbox is fitted to 1 generation(s): Toyota Highlander.
Common problems and what to check
Gearbox: Aisin (Toyota/Lexus 4–8-speed automatic)
- shift shocks at high mileage
- solenoid wear from old oil
What to check when buying: shift smoothness with a warmed-up gearbox.
Tip: Reliable gearboxes; despite being "maintenance-free", it's better to change the oil every 60–80k km.