Toyota Motor Corporation's U family is a family of automatic front-wheel drive/rear-wheel drive/four-wheel drive transmissions found in later vehicle models.
Applications
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
3.938 | 2.194 | 1.411 | 1.019 | 3.141 | 3.480 |
Applications
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
3.938 | 2.194 | 1.411 | 1.019 | 3.141 | 3.080 |
5 speed automatic transaxle
Gear ratios for this transmission
1st | 2nd | 3rd | 4th | 5th | Reverse | Final |
---|---|---|---|---|---|---|
3.938 | 2.194 | 1.411 | 0.973 | 0.703 | 3.141 | 3.478 |
Applications
5 speed automatic transaxle
Gear ratios
1st | 2nd | 3rd | 4th | 5th | Reverse | Final |
---|---|---|---|---|---|---|
4.235 | 2.360 | 1.517 | 1.047 | 0.756 | 3.378 | Varies |
Applications
U151E Final Drive Ratios
Camry/Solara | Highlander | Sienna/Rav4 |
---|---|---|
3.291 | 3.478 | 3.080 |
5 speed automatic transaxle (4x4)
Application
4 speed automatic transaxle
Gear ratios for this transmission.
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
3.943 | 2.197 | 1.413 | 1.020 | 3.145 | 3.120 |
Applications
Gear ratios
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
3.943 | 2.197 | 1.413 | 1.020 | 3.145 | 2.740 |
Applications
The U250E is a 5-speed version of the U241E.
Gear ratios
1st | 2nd | 3rd | 4th | 5th | Reverse | Final |
---|---|---|---|---|---|---|
3.943 | 2.197 | 1.413 | 0.975 | 0.703 | 3.145 | 3.391 |
Applications
4 speed automatic transaxle
Gear ratios
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
2.847 | 1.552 | 1.000 | 0.700 | 2.343 | 4.237 |
Application
Gear ratios
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
2.847 | 1.552 | 1.000 | 0.700 | 2.343 | 4.237 |
Application
1st | 2nd | 3rd | 4th | Reverse | Final |
---|---|---|---|---|---|
2.847 | 1.552 | 1.000 | 0.700 | 2.343 | 4.237 |
Application
Production of the U660E and U660F commenced in January 2006, Toyota's first 6-speed automatic transaxles for front-wheel-drive vehicles; transaxles feature a compact gear train that achieves six speeds using a single axis to produce a high torque of 400 Nm, and are as low cost, compact, and light as 4-speed automatic transaxles [1] The transaxle is a Lepelletier design which uses a simple gear set to drive a Ravigneaux planetary gear set (with long and short pinion gears in the same planet carrier). [2]
6 speed automatic transverse (V6) 6 speed version of the U151E and F
Application
1st | 2nd | 3rd | 4th | 5th | 6th | Reverse | Final |
---|---|---|---|---|---|---|---|
3.300 | 1.900 | 1.421 | 1.000 | 0.713 | 0.609 | 4.148 | Varies |
u660e Final Drive Ratios
Avalon 08-12 | Avalon 13-15 | Blade 07-12 | Camry 08-11 | Camry 12-15 | Highlander 14-15 | Sienna 11-15 | Venza 09-15 | Zio 07-13 | Lotus Evora |
---|---|---|---|---|---|---|---|---|---|
3.685 | 3.238 | 3.685 | 3.685 | 3.458 | 4.154 | 3.935 | 4.398 | 3.685 | 3.685 |
Application
6 speed automatic communicates with engine to calculate torque with reduced-friction clutch and thrust bearings multi-mode automatic transmission, electronically controlled transmission with intelligence (ECT-i)
1st | 2nd | 3rd | 4th | 5th | 6th | Reverse | Final FWD | Final AWD |
---|---|---|---|---|---|---|---|---|
3.300 | 1.900 | 1.420 | 1.000 | 0.713 | 0.608 | 4.148 | 3.888 | 4.117 |
2WD | AWD |
---|---|
3.888 | 4.117 |
6 speed automatic transaxle (I4) 6 speed version light duty version of the U660E/F
Application
1st | 2nd | 3rd | 4th | 5th | 6th | Reverse | Final |
---|---|---|---|---|---|---|---|
3.300 | 1.900 | 1.420 | 1.000 | 0.713 | 0.608 | 4.148 | 3.815 |
Application
Application
8 speed automatic transaxle (V6)
Application
8 speed automatic transaxle (V6)
Application
Production of the UA80E and UA80F commenced in August 2016. This transaxle features a compact gear train that achieves eight speeds using a single axis allowing for input torque up to 430Nm. It is a more compact and optimized version of the U880 automatic transmission structure with additional features for improved performance and efficiency. The marketing name for the transmission is the "Direct Shift – 8AT 8-speed automatic transmission" [3] [4] Unlike the U880 transmission, which was developed for Toyota by Aisin AW, the UA80 was developed in a joint venture between Toyota and Aisin AW. Due to global application, development was done in a global fashion involving engineering resources in both Japan and the US. The UB80E/F transmissions are used for lower torque applications, 4 cylinder engines, and rated at 280Nm. [5]
The UA80 family of 8 speed transmissions has had some issues which has led to class action lawsuits, Customer Support Program and TSBs. 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. [6] [7]
Additional issues arose when 2017 & 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. [8] 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 60K mile powertrain warranty. [9]
More whine or grind issues have been documented in 2021 Avalon, Camry and Highlanders equipped with the UA80E or UA80F transmission prompting T-SB-0008-21. [10]
Gear Teeth and Ratios | Planetary Gear Set: Teeth [lower-alpha 1] | Count | Total | Avg. | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Ravigneaux | Ravigneaux | ||||||||||
Model Type | Version First Delivery | [lower-alpha 2] [lower-alpha 3] | [lower-alpha 4] [lower-alpha 5] | [lower-alpha 6] [lower-alpha 7] | [lower-alpha 8] [lower-alpha 9] | Brakes Clutches | Ratio Span | Gear Step | |||
Gear | R 1 | R 2 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Final Drive |
TBD | 0 N⋅m (0 lb⋅ft ) · TBD | 38 (58) | (58) 78 | 36 44 | 44 96 | 2 4 | 7.5833 | 1.3357 | |||
Ratio | –4.2545 | –2.1818 | 5.2000 | 2.9714 | 1.9500 | 1.4700 | 1.2235 | 1.0000 | 0.8175 | 0.6857 | TBD |
TBD | 0 N⋅m (0 lb⋅ft ) · TBD | 38 (58) | (58) 78 | 26 34 | 34 70 | 2 4 | 7.8000 | 1.3410 | |||
Ratio | –4.0147 | –2.0588 | 5.2500 | 3.0288 | 1.9500 | 1.4570 | 1.2209 | 1.0000 | 0.8086 | 0.6731 | TBD |
UA 80E | 430 N⋅m (320 lb⋅ft ) 2016 | 42 (62) | (62) 82 | 26 34 | 34 70 | 2 4 | 8.2000 | 1.3507 | |||
Ratio | –4.2206 | –2.0588 | 5.5192 | 3.1842 | 2.0500 | 1.4920 | 1.2349 | 1.0000 | 0.8008 | 0.6731 | TBD |
8 speed direct shift automatic transverse for high torque (430 Nm) applications (V6)
Application
Application
8 speed direct shift automatic transverse for low torque (280 Nm) applications
Application
CVT automatic transaxle
Application
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