Parts for your 2017 Subaru Exiga-Batteries

2017 Subaru Exiga batteries: what they do and how to look after them

Batteries are absolutely relevant to the 2017 Subaru Exiga. Technical sources including the Subaru Exiga/Exiga Crossover 7 Owner’s Manual (2017 JDM) and the YA-series service manual specify a 12‑volt starting/lighting/ignition (SLI) battery, with start‑stop equipped trims requiring an EFB or AGM type in JIS sizes such as Q85 or 55D23L. These align with JIS D5301 battery standards used by Subaru across late‑model petrol platforms.

In this Exiga, the battery’s main job is cranking the engine and keeping the vehicle’s electronics happy when the engine’s off or idling. It stabilises voltage for the ECU, infotainment, lighting, and safety systems (including EyeSight on applicable trims). On start‑stop variants, it also copes with frequent restarts, so the right spec battery is critical.

When it’s time for servicing, a quick battery health check is smart. A technician will measure open‑circuit voltage, perform a load or conductance test, and confirm the alternator is charging around 13.8–14.6 V. They’ll also inspect terminals, the hold‑down clamp, and any signs of swelling or electrolyte seepage. For start‑stop Exigas, replacing like‑for‑like (EFB with EFB or AGM) matters—don’t downgrade to a conventional flooded unit or start‑stop performance and battery life will suffer.

Replacement tips owners will appreciate:

• Match the JIS size, terminal orientation (typically left‑positive), and cold cranking rating to Subaru’s spec.
• Use a memory saver if possible