Drive chain may break causing loss of drive power
Defect Summary
Subaru of america, inc. (subaru) is recalling certain 2019-2020 ascent, 2020 legacy and outback vehicles. a programming error in the transmission control unit (tcu) may allow the clutch to engage before the drive chain is completely clamped.
Safety Consequence
An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
Corrective Action
Dealers will reprogram the tcu, inspect tcu data for chain slip, and visually inspect the chain guide. if evidence of chain slippage or damage is found, the transmission will be replaced. repairs will be performed free of charge. owner notification letters were mailed august 19, 2022. this recall includes all vehicles previously recalled under 19v-855. vehicles previously recalled under 19v-855 will need to have the new remedy performed for this recall once available. owners may contact subaru customer service at 1-844-373-6614. subaru's number for this recall is wrk-21.
Similar Recalls
Other recalls from Subaru Of America, Inc. or involving Power Train.
FAQ: Recall 21V955000
Your rights, the repair process, and what each field on this page means.
What is recall 21V955000?
NHTSA recall 21V955000 was issued by Subaru Of America, Inc. on December 9, 2021. It addresses: Drive chain may break causing loss of drive power. The recall affects approximately 198,255 vehicles, with the defect involving the Power Train component.
How do I get this recall repaired?
Contact any authorized Subaru Of America, Inc. dealer and reference NHTSA recall ID 21V955000 or the manufacturer campaign number WRK-21. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.