Loose Battery Can Nix EPS for Subaru

Feb. 19, 2021

If you encounter a Subaru equipped with electronic power steering (2014 Tribeca is an example), where the EPS (electronic power steering) light is on without a DTC and there is a heavy steering feel, check to see if the battery terminals are clean and properly torqued. If the nut on the battery terminal becomes loose or badly contaminated, this can result in a momentary loss in power to the electronic power steering circuit.

Check for battery terminal cleanliness and check the tightness of the nut (requires a 10mm wrench).

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.