The Aisin AW90-40LS 4-speed automatic transmission was produced from 1997 to 2012 and was installed in the very popular Lexus RX300 crossovers and EC300 sedans. In front-wheel drive and all-wheel drive Toyota models, this automatic transmission was designated U140E and U140F.
Specifications
| Type | automatic transmission |
| Number of gears | 4 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 3.0 |
| Torque output, Nm | up to 300 |
| Recommended oil | Toyota ATF Type T-IV since 2006 Toyota ATF WS |
| Oil capacity, liter | 8.9 |
| Partial replacement, liter | 4.0 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~300 000 km |
| Weight, kg | 101 |
Gear ratios Aisin AW90-40LS
Using the example of a 2001 Lexus RX300 with a 3.0 liter engine:
| Main | 3.291 |
| 1st | 3.938 |
| 2nd | 2.194 |
| 3rd | 1.411 |
| 4th | 1.019 |
| Reverse | 3.141 |
Using
The transmission was installed on:
- Lexus ES300 3 (XV20) in 1997 – 2001
- Lexus RX300 1 (XU10) in 1998 – 2003
- Toyota Caldina 2 (T210) in 1997 – 2002
- Toyota Caldina 3 (T240) in 2002 – 2007
- Toyota Camry 5 (XV30) in 2001 – 2004
- Toyota Corolla Altis 2 (CE140) in 2008 – 2010
- Toyota Estima 2 (XR30) in 2000 – 2005
- Toyota Estima 3 (XR50) in 2006 – 2019
- Toyota Harrier 1 (XU10) in 1997 – 2003
- Toyota Highlander 1 (XU20) in 2000 – 2003
- Toyota Ipsum 2 (XM20) in 2001 – 2010
- Toyota Matrix 2 (E140) in 2008 – 2012
- Toyota RAV4 2 (XA20) in 2000 – 2005
- Toyota RAV4 3 (XA30) in 2005 – 2011
- Toyota Windom 2 (XV20) in 1997 – 2001
Disadvantages of the Aisin AW90-40LS gearbox
- This automatic transmission operates without any particular problems with four-cylinder engines;
- However, with V6 engines, transmission life is highly dependent on operating conditions;
- With vigorous driving, the Teflon ring quickly clogs the groove in the rear cover;
- Then, the lubrication pressure in the system drops, and the clutch packs begin to burn;
- Frequent abrupt starts also quickly destroy the rear planetary gear set of the transmission.
