Fixing Inoperative Subaru RES Fobs

Feb. 20, 2023

The affected RES kits are H001SFL000-2017 (Impreza with push-start ignition, and H001SFL100-2017 (with turn-key start ignition).

There have been isolated reports of an inoperative remote engine start (RES) fobs on 2017 and later Subaru Impreza vehicles, where the blue LED does not illuminate when pressing the start button. The cause of this is a dead battery in the fob itself, due to a software error. The affected RES kits are H001SFL000-2017 (Impreza with push-start ignition, and H001SFL100-2017 (with turn-key start ignition).

The repair for this condition is to order a replacement fob, P/N H001SFL020, which has the updated software.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.