U540E

The 4-speed FWD automatic transmission U540E was designed by Aisin in 2000 on the basis of the famous A4LB-1, which went out of fashion by that time. The transmission A4LB-1 also was modified in 2002 and a new modification can be found on different cars worldwide.

This automatic transmission has two names - U540E (according to Aisin Co), and Daihatsu gave different names to its sub-modifications: A4Q, A4P, A4L, A4G, ..., depending on the car model. The U540E was upgraded with several hydraulic control solenoids, the valve body and electrics, and the new filter for the valve body.