Subaru Ascent, Legacy +1 more: Powertrain

Affects Subaru Ascent, Legacy, Outback · 2019–2020 — about 13K vehicles.

The hazard

Issue: On certain vehicles, a software problem in the transmission control unit (TCU) may cause the drive chain to slip or break. If this happens while the vehicle is in motion, there could be a loss of power to the wheels. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Corrective Actions: Subaru will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the transmission chain guide and update the TCU. If necessary, the transmission assembly will be replaced.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational