Gearbox Aisin TL-80SN

The 8-speed automatic transmission Aisin TL-80SN or AWR8L55 has been produced in Japan since 2006 and is installed on the rear or all-wheel drive Toyota and Lexus models under the designations AA80E and AA80F. This automatic transmission was also installed on the third generation of the Cadillac CTS model with LFX and LGX units.

TL-80 family: TL‑80NF, TL‑80SD, TL‑80SN.

Specifications

Production years since 2006
Type automatic transmission
Number of gears 8
Type of drive all wheel / rear
Engine volume, l up to 5.0
Torque output, Nm up to 550
Recommended oil Toyota ATF WS
Oil capacity, liter 10.7
Replacing the oil every 50,000 km
Replacing the filter every 50,000 km
Gearbox lifespan, km ~300 000
Weight, kg 112

Gear ratios Aisin TL-80SN

Using the example of a Cadillac CTS 2014 with a 3.6 liter engine:

Main 2.85
1st 4.596
2nd 2.724
3rd 1.863
4th 1.464
5th 1.231
6th 1.000
7th 0.824
8th 0.685
Reverse 4.056

The transmission was installed on:

  • Cadillac CTS III (A1LL) in 2013 – 2016;
  • Lexus GS460 3 (S190) in 2007 – 2011;
  • Lexus GS-F 4 (L10) in 2015 – 2020;
  • Lexus IS-F 2 (XE20) in 2007 – 2014;
  • Lexus IS500 3 (XE30) since 2021;
  • Lexus LS460 4 (XF40) in 2006 – 2017;
  • Lexus RC-F 1 (XC10) since 2014;
  • Toyota Crown Majesta 5 (S200) in 2009 – 2013.

Disadvantages of the TL-80SN gearbox

  • At first, on specialized forums they often complained about vibrations and jerks when switching;
  • Several new firmwares were released and this helped the majority of owners;
  • However, in some cases, only increasing the level of lubrication with adaptation helps;
  • Other problems are standard and are associated with contamination of the valve body with wear products;
  • If the torque converter clutch wears heavily, the oil pump bushing breaks and leaks appear.

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