The official notice
Defect
On certain vehicles, the engine control module (ECM) may have been programmed incorrectly. As a result, the internal temperature of the ignition coils may increase. This could cause a short circuit and a blown fuse. This may result in a sudden loss of engine power with an inability to immediately restart. Note: This recall replaces WUQ-02 (Transport Canada recall 2019-526). Vehicles that were repaired under that recall also require this repair.
Safety Risk
A sudden loss of engine power could increase the risk of a crash.
Remedy
Subaru will notify owners by mail and instruct you to take your vehicle to a dealer to reprogram the ECM if necessary, and replace the ignition coils. On vehicles with ignition coil damage, if a certain trouble code (DTC) is stored, the front exhaust pipe will also be replaced.