The Aisin TS40-SN 4-speed automatic transmission has been assembled at a plant in China since 2010 and is installed in popular local models such as the Dongfeng S30 and Changan CS35. This automatic transmission was installed in Asian-spec Toyota Vitz, Yaris, and Vios models under the designation U442E.
Specifications
| Type | automatic transmission |
| Number of gears | 4 |
| Type of drive | front |
| Engine volume, l | up to 1.6 |
| Torque output, Nm | up to 130 |
| Recommended oil | Aisin ATF AW-1 |
| Oil capacity, liter | 4.8 |
| Partial replacement, liter | 2.5 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 54 |
Gear ratios Aisin TS-40SN
Using the example of the 2015 Changan CS35 with a 1.6 liter engine:
| Main | 4.277 |
| 1st | 2.875 |
| 2nd | 1.568 |
| 3rd | 1.000 |
| 4th | 0.697 |
| Reverse | 2.300 |
Using
The transmission was installed on:
- Changan CS35 I (S101) in 2012 – 2022
- Changan Eado 1 (C201) in 2012 – 2018
- Chevrolet Spark 3 (M300) in 2010 – 2023
- Dongfeng H30 Cross I (BF) in 2010 – 2017
- Dongfeng S30 I (BF) in 2009 – 2017
- Ravon R2 1 (M300) in 2016 – 2020
- Toyota Etios 1 (AK10) in 2012 – 2021
- Toyota Vios 3 (XP150) in 2013 – 2016
- Toyota Vitz 3 (XP130) in 2010 – 2017
- Toyota Yaris 3 (XP130) in 2011 – 2016
Disadvantages of the Aisin TS-40SN gearbox
- The gear selector on the automatic transmission used to constantly break in the early years, but that was later fixed;
- And now the most common problem is the main thrust bearing slipping;
- It slips due to a loose locking pin, and then the vibrations destroy the planetary gear;
- Also, at high mileage, the oil pump seal often leaks, which is dangerous for the transmission;
- A well-known problem with the rear cover is inherited from the U-series automatic transmissions.
