Parts for your 2017 Subaru Exiga-Starter motor

2017 Subaru Exiga starter motor — what it does and when to replace it

Based on technical references including the Subaru Global Service Manual (Starting/Charging System chapter for the 2015–2018 Exiga/Exiga Crossover 7 with the FB25 engine), Subaru’s FAST parts catalogue for MY2017 Exiga, and Denso’s OE application guidance for Subaru FB-series engines, the 2017 Subaru Exiga uses a conventional 12‑volt starter motor with an integrated solenoid. So yes, a starter motor is fitted and absolutely relevant to this model.

On the 2017 Subaru Exiga, the starter motor’s whole job is to spin the FB-series flat‑four fast enough for the engine to fire. When the driver presses the Start/Stop button or turns the key, the solenoid throws a small pinion gear into the flywheel ring gear and the electric motor cranks the engine. Once it’s running, the pinion retracts and the starter sits idle until the next start. It’s a tough little unit that draws big current, so healthy battery voltage, clean earths, and solid connections matter just as much as the motor itself.

For servicing, the basics go a long way. Keep the battery in good nick, terminals clean and tight, and check for any corrosion on the main starter cable and engine earth strap. If cranking is slow, there’s a single click with no spin, or a grinding sound on start, it’s time to test. An auto sparky can run voltage‑drop checks across the positive and earth paths, confirm the starter relay is doing its thing, and bench‑test the motor if needed. Many Exiga variants don’t use idle stop/start, but if yours does (you’ll see a dash icon or a note in the owner’s manual), make sure any replacement is the correct heavy‑duty spec.

Replacement isn’t a massive drama for a trained tech. Under the bonnet, the starter sits at the rear of the engine near the bellhousing. Typical steps are to disconnect the battery negative, move the intake ducting for access, unplug the control connector, remove the battery cable from the solenoid, then undo the mounting bolts and lift the unit out. Refitting a quality OEM or OE‑equivalent (often Denso) starter with fresh hardware where specified helps avoid repeat issues. Expect around one to two hours of labour depending on tools and access.

Handy tips to maximise starter life:

• Use a battery that meets the car’s spec, replace weak batteries early.
• Avoid long cranking, if it doesn’t fire in 5–10 seconds, pause and re‑try.
• Keep engine earths clean and tight to minimise voltage drop.

Where is the starter motor on a 2017 Subaru Exiga?

It’s mounted at the rear of the engine, where the engine meets the transmission bellhousing. On most cars it’s accessible from above with the intake ducting moved aside, though some techs prefer access from underneath on a hoist.

Does the 2017 Exiga have idle stop/start, and does that change the starter?

Many 2017 Exiga Crossover 7 variants are conventional (non‑hybrid) without idle stop/start. If yours has an Idling Stop feature (look for an “A” in a circular arrow on the dash or a mention in the owner’s manual), it will use a heavy‑duty starter and a battery designed for frequent restarts. Always match replacements to the build spec.

What are common signs the starter needs attention?

Slow or laboured cranking, a single click with no rotation, intermittent starting that improves when the battery is freshly charged, or grinding noises as the engine starts. Before condemning the starter, rule out a weak battery, corroded terminals, or a tired engine earth strap.