Aisin–Toyota 8-speed automatic transmission

Last updated
AA 80E/F · AE 80E/F · AL 80E/F
TR-80SD · TR-81SD · TR-82SD
AW F8 F35 · AW F8 F45
Aisin AW AWF8F35.jpg
Cutaway of an AW F8 F35
Overview
Manufacturer Toyota · Aisin AW
Also calledBMW/Mini GA 8F 22AW
Volvo TG-81SC/SD
GM AW F8 F45 & AF50-8
VW AQ 450
PSA EAT8
Production2006–present
Body and chassis
Class 8-speed automatic transmission
Related ZF 8HP · GM 8L · MB 9G-Tronic · ZF 9HP
Chronology
Predecessor AWTF-80 SC transmission

Aisin and Toyota offer various 8-speed automatic transmissions for use in both longitudinal [lower-alpha 1] [1] and transverse [lower-alpha 2] [2] engine vehicles, based on a common, globally patented gearset concept. [lower-alpha 1] [1] [lower-alpha 2] [2]

Contents

The Aisin TL-80SN (Toyota AA 80E/AA 80F/AA 81E) series is the world's first 8-speed automatic transmission for passenger cars. [3] It is designed for longitudinal engines [lower-alpha 1] [1] and was first used in the 2007 model year Lexus LS  460.

Beginning with the AW F8 transmission Aisin and Toyota derived a transverse engine variant [lower-alpha 2] [2] by adapting this globally patented gearset concept to fit into the same space as the previous generation U6xx Lepelletier gear mechanism-based 6-speed transmissions to increase the overall ratio spread, reduce gear steps, and increase the torque capacity for transverse engine vehicles as well. [4]

The Aisin AW F8 F45 (Toyota UA 80E/UA 80F) series is the world's first 8-speed automatic transmission designed for use in transverse engine [lower-alpha 2] [2] applications. [5] It is also called EAT8 (PSA), GA 8F 22AW (BMW/Mini), TG-81SC (Volvo), [6] AF50-8 (Opel/Vauxhall), [7] AW F8 F45 (Cadillac), [8] and AQ 450 (Volkswagen Group). [9] First usage was in the 2013 model year Lexus RX  350 F Sport.

Toyota’s marketing name for the transmission is "Direct Shift – 8AT 8-speed automatic transmission". [10] [11] In contrast to the UB 80E/F transmission, which was developed by Aisin AW for Toyota, the UA 80E/F was developed in a joint venture between Toyota and Aisin AW. Due to its worldwide application, development was carried out in a global manner involving R&D resources in Japan and the US. The Aisin AW F8 F35 (Toyota UB 80E/F) transmissions are used for lower torque applications, such as 4-cylinder engines, and rated for 300  N⋅m (221  lb⋅ft ). [12]

Gear Ratios [lower-alpha 3]
Aisin Toyota
Gear
Year
R2 [lower-alpha 4] R112345678Total
Span
Span
Center
Avg.
Step
Compo-
nents
Longitudinal engines [lower-alpha 1] [1] 3
Gearsets
2
Brakes
4
Clutches
TL-80SNAA 80E/F2006−2.176−4.0564.5972.7241.8641.4641.2311.0000.8240.6856.7091.7751.312
AB 80E/F2015−2.053−3.7864.7962.8111.8441.4291.2141.0000.8180.6727.1321.7961.324
TR-80SDAE 80E/F2010−2.053−3.8254.8452.8401.8641.4371.2171.0000.8160.6727.2061.8051.326
TR-81SD2010−2.182−4.0664.9702.8401.8641.4371.2101.0000.8250.6867.2471.8461.327
TR-82SD2010−2.182−4.0244.9192.8111.8441.4291.2071.0000.8270.6867.1731.8361.325
AL 80E/F2023−1.870−3.6464.4132.8081.9501.5111.2741.0000.7930.6526.7741.6961.314
Transverse engines [lower-alpha 2] [2]
AW F8 F45UA 80E/F2016−2.059−4.2215.5193.1842.0501.4921.2351.0000.8010.6738.2001.9271.351
AW F8 F35UB 80E/F2017−2.059−4.0155.2503.0291.9501.4571.2211.0000.8090.6737.8001.8801.341
TG-80LSUB 80E/F2017−2.053−4.0035.0702.9721.9501.4701.2311.0000.8080.6727.5401.8461.335
TBDTBDTBD−2.182−4.2555.2002.9711.9501.4701.2241.0000.8170.6867.5831.8881.336
  1. 1 2 3 4 See also Toyota A transmission
  2. 1 2 3 4 5 See also Toyota U transmission
  3. Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
  4. Logically, the gearset concept (layout) provides for this 2nd reverse gear, but it will most likely not be used in the transmissions that the car manufacturers eventually bring to market. In some data sheets, the gear ratio of R2 is given, presumably a careless error [1] [13] [14]

Specifications

Layout (Gearset Concept)

All 8-speed automatic transmissions from Aisin and Toyota for passenger cars are based on the same layout [lower-alpha 1] [1] [lower-alpha 2] [2] in both engines orientations. [lower-alpha 1] [1] [lower-alpha 2] [2] For transverse installation, [lower-alpha 2] [2] the layout of the longitudinal installation [lower-alpha 1] [1] was merely mirrored. [lower-alpha 1] [1] [lower-alpha 2] [2] Gearset 1 is not an ordinary one, but a reversed one. It consists of 2 pinions that mesh with each other. One of these pinions meshes with the sun gear, the other with the ring gear. As a results, the gearset generates different ratios and the sun gear rotates in the same direction as the ring gear when the planetary gear carrier is stationary. This made it possible to manage 8 speeds with 3 gearsets. As a result, the transmission is more compact than 8-speed transmissions from competitors. This means that an 8-speed automatic transmission was also possible for transverse engines.

Progress

Smaller parts and a hydraulic circuit with fewer components allow the transmission to maintain the same size as the previous LS 430's 6-speed transmission. The aluminum die-cast case is 10 % lighter, yet 30 % more rigid, even with two additional gears and a 22 % greater torque capacity the new transmission weighs 95  kg (209  lb ) or 10 % more than the previous unit. With new micro-laser technology gear tooth production tolerances have been reduced 50 %. Aluminum has also replaced steel on gear tooth surfaces. Shift times are as low as 350 milliseconds or 41 % faster than the previous LS 430's unit.

The Lexus IS  F and LS  460 (with sport package) use Sport Direct Shift (SPDS) which allows for faster shift times. The torque converter can lockup from 2nd to 8th gears.

Two Possible Reverse Gears R1 and R2 (R2 Shaded Gray)

The gearset concept offers 2 reverse gears. Due to the increasing electronic control of automatic transmissions and engines, a fast reverse gear (i.e. designed to reduce wheel spin) is no longer necessary for problem-free starting in icy conditions (winter mode). It is therefore unlikely that car manufacturers will make use of this special option of a dedicated winter mode with an additional reverse gear R2. For this reason, the representation of R2 in the tables is shaded gray throughout. In some data sheets, the gear ratio of R2 is given, presumably a careless error. [1] [13] [14]

The direction is reversed in gearset 3, the outer one of the Ravigneaux gearset. In the fast reverse gear R2, this part of the Ravigneaux gearset is directly connected to the input (turbine) side. To reduce the shaft speed for an appropriate reverse gear R1, the input (turbine) is put through gearset 1 first. This reduction corresponds to the ratio of the 3rd gear. Therefore, the gear step between the two reverse gears reflects the ratio of the 3rd gear.

R1 And R2
GearRatio · Algebra
R2 [lower-alpha 1] [1] [lower-alpha 2] [2] [14] [13]
3
R2 x 3
R1

Ratios

Gear Ratios
With AssessmentPlanetary Gearset: Teeth [lower-alpha 1] CountTotal [lower-alpha 2]
Center [lower-alpha 3]
Avg. [lower-alpha 4]
Reversed Ravigneaux
Aisin
Toyota
Version
First Delivery
S1 [lower-alpha 5]
R1 [lower-alpha 6]
S2 [lower-alpha 7]
R2 [lower-alpha 8]
S3 [lower-alpha 9]
R3 [lower-alpha 10]
Brakes
Clutches
Ratio
Span
Gear
Step [lower-alpha 11]
Gear
Ratio
R2 [lower-alpha 12]
R1
1
2
3
4
5
6
7
8
Step [lower-alpha 11] [lower-alpha 13] [lower-alpha 14]
Δ Step [lower-alpha 15] [lower-alpha 16]
Shaft
Speed
Δ Shaft
Speed [lower-alpha 17]
Longitudinal engines [lower-alpha 18] [1]
TL-80SN
AA 80E/F
550  N⋅m (406  lb⋅ft ) · 200638
82
30
34
34
74
2
4
6.7091
1.7748
1.3125 [lower-alpha 11]
Gear
Ratio
−2.1765 [lower-alpha 12] [1]
[13] [14]
−4.0561 [lower-alpha 13]
4.5970
2.7241 [lower-alpha 14]
1.8636
1.4642 [lower-alpha 11] [lower-alpha 17]
1.2313 [lower-alpha 16] [lower-alpha 17]
1.0000
0.8245
0.6852
Step1.86360.8824 [lower-alpha 13] 1.00001.6875 [lower-alpha 14] 1.46171.2728 [lower-alpha 11] 1.18911.23131.21291.2033
Δ Step [lower-alpha 15] 1.15451.14841.07040.9657 [lower-alpha 16] 1.01521.0080
Speed–2.1121-1.13331.00001.68752.46673.13963.73334.59705.57586.7091
Δ Speed0.97881.13331.00000.68750.77920.6729 [lower-alpha 17] 0.5938 [lower-alpha 17] 0.86360.97881.1333

AB 80E/F

550  N⋅m (406  lb⋅ft ) [15]  · 2015
38
83
30
38
38
78
2
4
7.1319
1.7957
1.3240 [lower-alpha 11]
Gear
Ratio
−2.0526 [lower-alpha 12]
−3.7860 [lower-alpha 13]
4.7956
2.8112 [lower-alpha 14] [lower-alpha 16]
1.8444
1.4294 [lower-alpha 11] [lower-alpha 17]
1.2137 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8176
0.6724
Step1.84440.7895 [lower-alpha 13] 1.00001.7059 [lower-alpha 14] 1.52411.2904 [lower-alpha 11] 1.17771.21371.22301.2160
Δ Step [lower-alpha 15] 1.1192 [lower-alpha 16] 1.18111.09570.9703 [lower-alpha 16] 0.9924 [lower-alpha 16] 1.0058
Speed–2.3363-1.26671.00001.70592.60003.35503.95114.79565.86537.1319
Δ Speed1.06961.26671.00000.70590.89410.7550 [lower-alpha 17] 0.5961 [lower-alpha 17] 0.84441.06961.2667
TR-80SD
AE 80E/F
550  N⋅m (406  lb⋅ft ) [16]  · 201038
82
30
38
38
74
2
4
7.2061
1.8050
1.3260 [lower-alpha 11]
Gear
Ratio
−2.0526 [lower-alpha 12]
−3.8254 [lower-alpha 13]
4.8455
2.8404 [lower-alpha 14] [lower-alpha 16]
1.8636
1.4369 [lower-alpha 11] [lower-alpha 17]
1.2169 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8158
0.6724
Step1.86360.7895 [lower-alpha 13] 1.00001.7059 [lower-alpha 14] 1.52411.2970 [lower-alpha 11] 1.18081.21691.22581.2133
Δ Step [lower-alpha 15] 1.1192 [lower-alpha 16] 1.17511.09840.9703 [lower-alpha 16] 0.9928 [lower-alpha 16] 1.0103
Speed–2.3606-1.26671.00001.70592.60003.37223.98184.84555.93947.2061
Δ Speed1.09391.26671.00000.70590.89410.7722 [lower-alpha 17] 0.6096 [lower-alpha 17] 0.86361.09391.2667
TR-81SD
600  N⋅m (443  lb⋅ft ) [17]  · 2010
38
82
36 [lower-alpha 19]
44
44 [lower-alpha 19]
96
2
4
7.2475
1.8460
1.3270 [lower-alpha 11]
Gear
Ratio
−2.1818 [lower-alpha 12]
−4.0661 [lower-alpha 13]
4.9697
2.8398 [lower-alpha 14] [lower-alpha 16]
1.8636
1.4370 [lower-alpha 11] [lower-alpha 17]
1.2103 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8248
0.6857
Step1.86360.8181 [lower-alpha 13] 1.00001.7500 [lower-alpha 14] 1.52381.2969 [lower-alpha 11] 1.18731.21031.21241.2028
Δ Step [lower-alpha 15] 1.1484 [lower-alpha 16] 1.17501.09230.9810 [lower-alpha 16] 0.9983 [lower-alpha 16] 1.0079
Speed–2.2778-1.22221.00001.75002.66673.45834.10614.96976.02537.2475
Δ Speed1.05561.22221.00000.75000.91670.7917 [lower-alpha 17] 0.6477 [lower-alpha 17] 0.86361.05561.2222
TR-82SD
850  N⋅m (627  lb⋅ft ) [18]  · 2010
38
83
36 [lower-alpha 19]
44
44 [lower-alpha 19]
96
2
4
7.1728
1.8365
1.3251 [lower-alpha 11]
Gear
Ratio
−2.1818 [lower-alpha 12]
−4.0242 [lower-alpha 13]
4.9185
2.8106 [lower-alpha 14] [lower-alpha 16]
1.8444
1.4295 [lower-alpha 11] [lower-alpha 17]
1.2073 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8266
0.6857
Step1.84440.8181 [lower-alpha 13] 1.00001.7500 [lower-alpha 14] 1.52381.2903 [lower-alpha 11] 1.18411.20731.20981.2054
Δ Step [lower-alpha 15] 1.1484 [lower-alpha 16] 1.18101.08970.9808 [lower-alpha 16] 0.9979 [lower-alpha 16] 1.0037
Speed–2.2543-1.22221.00001.75002.66673.44074.07414.91855.95067.1728
Δ Speed1.03211.22221.00000.75000.91670.7741 [lower-alpha 17] 0.6333 [lower-alpha 17] 0.84441.03211.2222

AL 80E/F

TBD · 2023
38
78
38
46
46
86
2
4
6.7737
1.6957
1.3143 [lower-alpha 11]
Gear
Ratio
−1.8696 [lower-alpha 12]
−3.6457 [lower-alpha 13]
4.4132
2.8084 [lower-alpha 14] [lower-alpha 16]
1.9500
1.5112 [lower-alpha 11] [lower-alpha 17]
1.2743 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.7933
0.6515
Step1.95000.8261 [lower-alpha 13] 1.00001.57141.44021.2904 [lower-alpha 11] 1.18591.27431.26061.2176
Δ Step [lower-alpha 15] 1.0911 [lower-alpha 16] 1.11611.08810.9306 [lower-alpha 16] 1.0109 [lower-alpha 16] 1.0353
Speed–2.3605-1.21051.00001.57142.26322.92033.46324.41325.56326.7737
Δ Speed1.15001.21051.00000.57140.69170.6571 [lower-alpha 17] 0.5429 [lower-alpha 17] 0.95001.15001.2105
Transverse engines [lower-alpha 20] [2]
AW F8 F35
UB 80E/F
300  N⋅m (221  lb⋅ft ) [12]  · 201338
78
26
34
34
70
2
4
7.8000
1.8798
1.3410 [lower-alpha 11]
Gear
Ratio
−2.0588 [lower-alpha 12]
−4.0147 [lower-alpha 13]
5.2500
3.0288 [lower-alpha 14] [lower-alpha 16]
1.9500
1.4570 [lower-alpha 11] [lower-alpha 17]
1.2209 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8086
0.6731
Step1.95000.7647 [lower-alpha 13] 1.00001.7333 [lower-alpha 14] 1.55331.3384 [lower-alpha 11] 1.19331.22091.23661.2014
Δ Step [lower-alpha 15] 1.1159 [lower-alpha 16] 1.16051.12150.9774 [lower-alpha 16] 0.9873 [lower-alpha 16] 1.0293
Speed–2.5500-1.30771.00001.73332.69233.60334.30005.25006.49237.5833
Δ Speed1.24231.30771.00000.73330.95900.9110 [lower-alpha 17] 0.6967 [lower-alpha 17] 0.95001.24231.3077
AW F8 F45
UA 80E/F
430  N⋅m (317  lb⋅ft ) · 2013 [8] 42
82
26
34
34
70
2
4
8.2000
1.9274
1.3507 [lower-alpha 11]
Gear
Ratio
−2.0588 [lower-alpha 12]
−4.2206 [lower-alpha 13]
5.5192
3.1842 [lower-alpha 14] [lower-alpha 16]
2.0500 [lower-alpha 16]
1.4920
1.2349 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8008
0.6731
Step2.05000.7647 [lower-alpha 13] 1.00001.7333 [lower-alpha 14] 1.55331.37401.20821.23491.24881.1897
Δ Step [lower-alpha 15] 1.1159 [lower-alpha 16] 1.1305 [lower-alpha 16] 1.13720.9783 [lower-alpha 16] 0.9889 [lower-alpha 16] 1.0496
Speed–2.6808-1.30771.00001.73332.69233.69924.46925.51926.89238.2000
Δ Speed1.37311.30771.00000.73330.95901.00690.7700 [lower-alpha 17] 1.05001.37311.3077
TG-80LS
UB 80E/F
350  N⋅m (258  lb⋅ft ) · 201738
78
30
38
38
78
2
4
7.5400
1.8464
1.3346 [lower-alpha 11]
Gear
Ratio
−2.0526 [lower-alpha 12]
−4.0026 [lower-alpha 13]
5.0700
2.9721 [lower-alpha 14] [lower-alpha 16]
1.9500
1.4698 [lower-alpha 11] [lower-alpha 17]
1.2306 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8082
0.6724
Step1.95000.7895 [lower-alpha 13] 1.00001.7059 [lower-alpha 14] 1.52411.3267 [lower-alpha 11] 1.19441.23061.23731.2019
Δ Step [lower-alpha 15] 1.1192 [lower-alpha 16] 1.14881.11080.9706 [lower-alpha 16] 0.9945 [lower-alpha 16] 1.0295
Speed–2.4700-1.26671.00001.70592.60003.44944.12005.07006.27337.5400
Δ Speed1.20331.26671.00000.70590.89410.8494 [lower-alpha 17] 0.6706 [lower-alpha 17] 0.95001.20331.2667
TBDTBD · TBD38
78
36 [lower-alpha 19]
44
44 [lower-alpha 19]
96
2
4
7.5833
1.8883
1.3357 [lower-alpha 11]
Gear
Ratio
−2.1818 [lower-alpha 12]
−4.2545 [lower-alpha 13]
5.2000
2.9714 [lower-alpha 14] [lower-alpha 16]
1.9500
1.4700 [lower-alpha 11] [lower-alpha 17]
1.2235 [lower-alpha 16] [lower-alpha 17]
1.0000 [lower-alpha 16]
0.8175
0.6857
Step1.95000.8181 [lower-alpha 13] 1.00001.7500 [lower-alpha 14] 1.52381.3266 [lower-alpha 11] 1.20141.22351.22331.1921
Δ Step [lower-alpha 15] 1.1484 [lower-alpha 16] 1.14861.10420.9819 [lower-alpha 16] 1.0002 [lower-alpha 16] 1.0261
Speed–2.3833-1.22221.00001.75002.66673.53754.25005.2006.36117.5833
Δ Speed1.16111.22221.00000.75000.91670.8708 [lower-alpha 17] 0.7125 [lower-alpha 17] 0.95001.16111.2222
Ratio
R & Even
[lower-alpha 12]
Ratio
R & Odd
Algebra And Actuated Shift Elements
Brake A
Brake B [lower-alpha 12]
Clutch C
Clutch D
Clutch E
Clutch F [lower-alpha 12]
  1. Layout
    • Input and output are on opposite sides
    • Planetary gearset 1 is on the input (turbine) side
    • Input shafts are C1 (planetary gear carrier of reversed gearset 1) and, if actuated, C2 and C3 (the compound planetary gear carrier of the Ravigneaux gearset)
    • Output shaft is R3 (ring gear of outer Ravigneaux gearset)
  2. Total Ratio Span (Total Ratio Spread · Total Gear Ratio)
    • A wider span enables the
      • downspeeding when driving outside the city limits
      • increase the climbing ability
        • when driving over mountain passes or off-road
        • or when towing a trailer
  3. Ratio Span's Center
    • The center indicates the speed level of the transmission
    • Together with the final drive ratio
    • it gives the shaft speed level of the vehicle
  4. Average Gear Step
    • With decreasing step width
      • the gears connect better to each other
      • shifting comfort increases
  5. Sun 1: sun gear of gearset 1: reversed gearset
  6. Ring 1: ring gear of gearset 1 reversed gearset
  7. Sun 2: sun gear of gearset 2: inner Ravigneaux gearset
  8. Ring 2: ring gear of gearset 2: inner Ravigneaux gearset
  9. Sun 3: sun gear of gearset 3: outer Ravigneaux gearset
  10. Ring 3: ring gear of gearset 3: outer Ravigneaux gearset
  11. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Standard 50:50
     50 % Is Above And 50 % Is Below The Average Gear Step 
    • With steadily decreasing gear steps (yellow highlighted line Step)
    • and a particularly large step from 1st to 2nd gear
      • the lower half of the gear steps (between the small gears; rounded down, here the first 3) is always larger
      • and the upper half of the gear steps (between the large gears; rounded up, here the last 4) is always smaller
    • than the average gear step (cell highlighted yellow two rows above on the far right)
    • lower half: smaller gear steps are a waste of possible ratios (red bold)
    • upper half: larger gear steps are unsatisfactory (red bold)
  12. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Logically, the gearset concept (layout) provides for this 2nd reverse gear, but it will most likely not be used in the transmissions that the car manufacturers eventually bring to market. In some data sheets, the gear ratio of R2 is given, presumably a careless error [1] [13] [14]
  13. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Standard R:1
     Reverse And 1st Gear Have The Same Ratio 
    • The ideal reverse gear has the same transmission ratio as 1st gear
      • no impairment when maneuvering
      • especially when towing a trailer
      • a torque converter can only partially compensate for this deficiency
    • Plus 11.11 % minus 10 % compared to 1st gear is good
    • Plus 25 % minus 20 % is acceptable (red)
    • Above this is unsatisfactory (bold)
  14. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Standard 1:2
     Gear Step 1st To 2nd Gear As Small As Possible 
    • With continuously decreasing gear steps (yellow marked line Step)
    • the largest gear step is the one from 1st to 2nd gear, which
      • for a good speed connection and
      • a smooth gear shift
    • must be as small as possible
      • A gear ratio of up to 1.6667:1 (5:3) is good
      • Up to 1.7500:1 (7:4) is acceptable (red)
      • Above is unsatisfactory (bold)
  15. 1 2 3 4 5 6 7 8 9 10 11 From large to small gears (from right to left)
  16. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 Standard STEP
     From Large To Small Gears: Steady And Progressive Increase In Gear Steps 
    • Gear steps should
      • increase: Δ Step (first green highlighted line Δ Step) is always greater than 1
      • As progressive as possible: Δ Step is always greater than the previous step
    • Not progressively increasing is acceptable (red)
    • Not increasing is unsatisfactory (bold)
  17. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Standard SPEED
     From Small To Large Gears: Steady Increase In Shaft Speed Difference 
    • Shaft speed differences should
      • increase: Δ Shaft Speed (second line marked in green Δ (Shaft) Speed) is always greater than the previous one
    • 1 difference smaller than the previous one is acceptable (red)
    • 2 consecutive ones are a waste of possible ratios (bold)
  18. See also Toyota A transmission
  19. 1 2 3 4 5 6 36/44 and 44/96 or 27/33 and 33/72
  20. See also Toyota U transmission

UA 80E/F Failures And Problems

The UA 80E/F family of 8-speed transmissions has had some issues which led to class action lawsuits, a Customer Support Program and numerous technical service bulletins. Starting in 2017, some Highlander and Sienna customers starting complaining of harsh or delayed shifting, delayed acceleration, hesitation, jerking, unintended acceleration, lurching and excessive revving before upshifting. [19] [20]

Additional issues arose when 2017 and 2018 Highlander and Sienna customers experienced whining, master warning lights/check engine lights and transmission failures. This prompted Toyota to initiate a Customer Support Program (ZJC). This program covered certain 2017 and early 2018 built Highlanders and Sienna under specific VIN parameters and transmission build dates. [21] However, this issue has been problematic beyond the scope of the ZJC program. This is causing out of pocket costs for customers outside of the standard 6 yrs./60K mls. powertrain warranty. [22]

More whine or grind issues have been documented in 2021 Avalon, Camry and Highlanders equipped with the UA 80E/F transmission prompting T-SB-0008-21. [23]

Applications

Longitudinal Engines

Toyota & Lexus: AA 80E

8-speed automatic RWD transmission.

Toyota & Lexus: AA 80F

8-speed automatic AWD transmission.

Toyota & Lexus: AA 81E

Pairs with Toyota 2GR-FSE and 2GR-FKS V6 engines.

Toyota & Lexus: AE 80F

Toyota & Lexus: AL 80E

Toyota & Lexus: AL 80F

Aisin TL-80SN

Audi

  • 2010–2015 Q7 1st generation (type 4L) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI [16]
  • 2010–2015 Q7 1st generation (type 4L) 3.0 L TDi [17]
  • 2010–2015 Q7 1st generation (type 4L) 4.2 L TDi [18]

Hongqi

  • 2019–2023 HS7 1st generationI [16]
  • 2023–present HS7 2nd generation [16]

Porsche

  • 2010–2017 Cayenne 2nd generation (type E2 92A) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI [16]
  • 2010–2018 Cayenne 2nd generation (type E2 92A) 3.0 L TDi [17]
  • 2010–2017 Cayenne 2nd generation (type E2 92A) 4.2 TDi · 4.8 L Turbo [18]
  • 2013–2017 Panamera 1st generation (type G1 970) facelift 3.0 L TDi [18]

Volkswagen

  • 2010–2018 Touareg 2nd generation (type 7P) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI [16]
  • 2010–2018 Touareg 2nd generation (type 7P) 3.0 L TDi [17]
  • 2010–2015 Touareg 2nd generation (type 7P) 4.2 L TDi [18]

Transverse Engines

Toyota (UA 80E/F)

Lexus (UA 80E/F)

  • 2012–present Lexus RX (V6 AL10 F-Sport, AL20 & AL30 non Hybrids)
  • 2018–present Lexus ES (non-hybrid engines)
  • 2020–present Lexus LM (LM350)
  • 2022–present Lexus NX (non-hybrid engines)
  • 2024–present Lexus LBX (Morizo RR)

Toyota & Lexus (UB 80E/F)

Toyota & Lexus (UB 81E/F)

BMW/MINI

Changan

Chery

Citroën

DS Automobiles

  • 2018–present DS 7
  • 2019–present DS 3
  • 2020–present DS 9
  • 2021–present DS 4

Exeed

Geely

GM

Jaguar

Land Rover

Lynk & Co

  • 2017–present 01
  • 2018–present 03
  • 2020–present 05 [28]
  • 2021–present 02
  • 2021–present 09

Mitsubishi

Opel/Vauxhall

Peugeot

Polestar

Škoda

Volkswagen/MAN

Volvo (TG-81SC/SD)

See also

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