Parts for your 2017 Subaru Legacy-Batteries

2017 Subaru Legacy (Liberty) batteries — what they do and how to look after them

Based on technical sources such as the 2017 Subaru Legacy/Liberty Owner’s Manual, Subaru Service Manual (Starting/Charging System – Battery), and Subaru parts catalogues, the 2017 Subaru Legacy is absolutely fitted with a 12‑volt battery. It’s central to starting the engine, powering lights and accessories, and supporting the vehicle’s control modules under the bonnet and in the cabin.

In this model, the battery’s job is to deliver a strong burst of current to the starter motor, then stabilise voltage while the alternator keeps things topped up. Even with the engine off, it looks after essentials like the remote locking, security system, and memory for seats and audio. Some markets feature Subaru’s Auto Stop-Start