Automatic transmission: control module (tcm/pcm/tecm)Recall 21V-955 · Subaru vehicles
Subaru of America, Inc. recall 21V-955 covers 198,255 Subaru vehicles for a automatic transmission: control module (tcm/pcm/tecm) problem, reported to NHTSA on December 9, 2021. The manufacturer's latest report (2024 Q2) shows 95% of affected vehicles repaired.
Source: NHTSA recall 21V955000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The risk
An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
The fix
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
95%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA. 177 vehicles were listed as unreachable.
Vehicles in this recall
Built from February 22, 2018 to August 13, 2020. Not every vehicle in these model years is included; check by VIN.