Drive chain may slip because of a control-unit programming error (2019–2021 Ascent, Outback, Legacy) (2019–2021)
NHTSA recall 21V955 says a programming error in the transmission control unit on 2019–2020 Ascents and 2020 Legacys and Outbacks may let the clutch engage before the drive chain is fully clamped, so the chain may slip and break, causing a loss of drive power. Dealers reprogram the TCU, check its data for chain slip and replace the transmission if damage is found. The recall absorbed earlier recall 19V855, and 22V485 added 2020–2021 Outbacks and Legacys.[7][8][9]
Reported symptoms
- Sudden loss of drive power
- Transmission warning light