POWER TRAIN
**VEHICLE:** 2020 Toyota RAV4 LE **VIN:** [XXX] **CURRENT MILEAGE:** 126,776 miles **PURCHASE DATE:** October 2020 **COMPONENT:** Automatic Transmission (Power Train) **PROBLEM DESCRIPTION:** On XXX, I took my 2020 Toyota RAV4 LE to a transmission specialty shop (TJ'S Transmission Service Inc., Bedford, PA) because the automatic transmission was slipping while driving. The professional diagnosis (Invoice #XXX) confirmed the following stored fault codes: P2681, P2816, P08BA, P2713 The technician also confirmed that the transmission fluid was black and contained metal debris, indicating significant internal wear of clutch/band components. While researching these codes, I found that Toyota previously issued Technical Service Bulletin (TSB) T-SB-0160-18, titled "Transaxle Whine Noise, Harsh Shift, MIL ON, or Reduced Power," which acknowledges these SAME fault codes (P2816, P08BA, P2713, among others) as a known problem in the 8-speed automatic transmission (UA80/UB80 family, manufactured by Aisin). This TSB was officially issued only for the 2017-2018 Highlander and Sienna models, but the 2019 and later RAV4 uses the same transmission family (UB80E/UB80F) for the 2.5L engine, suggesting this is the same design or manufacturing defect that has not been officially acknowledged for this model. This issue represents a safety risk, as unexpected loss of power or transmission slippage while driving (for example, when merging onto a highway or passing) can create a dangerous situation for the driver and other vehicles on the road. I am requesting that NHTSA investigate whether a similar failure pattern exists in other 2019-2021 RAV4 vehicles equipped with this transmission, and that consideration be given to whether Toyota should extend coverage of TSB T-SB-0160-18 (or issue a specific one) to include the RAV4. No repair was performed at this time due to the high estimated cost without warranty coverage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)