General signs:
* Delay or slippage when shifting gears
* Jerks or jolts when changing gears
* Increased noise or vibration during shifting or while driving
*Reduced power or acceleration
* Difficulty starting the engine
* Transmission fluid leaks
Specific features for Aisin automatic transmission:
* Delay in shifting to second gear: Typically indicates wear on the second gear clutch pack.
* Slipping while driving: May indicate wear on the forward clutch pack clutches.
* Slipping when shifting into reverse: May be due to wear on the reverse clutch pack clutches.
* Noise when shifting into high gear: Typically indicates a faulty torque converter.
* High noise at idle and while driving: May indicate worn bearings or gears.
* Transmission fluid leaking from the oil pan: May be caused by worn gaskets or seals.
* Burnt oil smell: Indicates that the automatic transmission is overheating, which can be caused by various reasons.
Other possible signs:
*Transmission fault indicator on the dashboard
* Inability to change gears
* Burning or metal smell