Subaru Reports Software Glitch
In the interest of customer satisfaction, Subaru is initiating a service program to reprogram the ECM on certain 2019-2020 Ascent and 2020 Legacy and Outback vehicles.
In some vehicles, the current software may cause the sub learning value control to operate improperly during the wake-up mode of the ECM. This could cause repeated erroneous learning of the accelerator position, which can result in the disabling of the VDC function.
When the VDC function is disabled, EyeSight, Reverse Automatic Braking (RAB) and Electronic Parking Brake (EPB) auto release functions are disabled by the VDC fail signal, causing the VDC, EyeSight, RAB and EPB warning lights to illuminate.
ECM reprogramming will be required.
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 MavrigianMike 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.
