Parts for your 2018 Toyota Crown-Starter motor

2018 Toyota Crown starter motor: what’s fitted and how to look after it

On the 2018 Toyota Crown (S220 series), whether a conventional starter motor is relevant depends on the powertrain. Technical sources such as Toyota’s New Car Features (NCF) manuals and Hybrid System descriptions note that the hybrid Crowns (2.5-litre A25A-FXS THS II and 3.5-litre 8GR-FXS Multi Stage Hybrid) don’t use a traditional 12‑volt starter or alternator. Instead, the hybrid motor‑generator (MG1) cranks the engine using the high‑voltage battery, while the 12‑volt battery mainly powers ECUs and relays. This design is detailed across Toyota/Lexus hybrid technical literature and service manuals. By contrast, the non‑hybrid 2.0‑litre turbo petrol Crown (8AR‑FTS with an 8‑speed auto) is equipped with a conventional 12‑volt starter motor mounted to the bellhousing, per Toyota service information for the 8AR‑FTS engine and its RWD driveline.

For hybrid owners: there’s no separate starter motor to service or replace. If the engine won’t “ready” or start, diagnosis focuses on the 12‑volt battery state, HV system, hybrid relays, and MG1 control—typical of Toyota’s THS II/Multi Stage Hybrid architecture documented in NCF guides.

For the 2.0‑litre turbo petrol Crown, the starter motor’s job is simple but critical: it spins the engine fast enough for the ECU to deliver fuel and spark, getting the 8AR‑FTS to fire quickly and cleanly. A healthy starter means snappy cold starts, less strain on the battery, and fewer dramas on frosty mornings. During regular servicing, it’s smart to check cranking speed and listen for tell‑tales like a slow, laboured turn, a single click, or a harsh grinding noise. Those can point to weak battery/earths, worn brushes or solenoid, or a mis‑engaging pinion and ring gear.

Basic care goes a long way. Keep the 12‑volt battery in good nick, clean the terminals, and make sure the main starter cable and engine earths are tight and corrosion‑free. If the starter is tired, replacement is usually more sensible than a backyard rebuild. Quality OEM or reputable aftermarket units from the original supplier tier (such as Denso) tend to crank faster and last longer. A workshop will disconnect the negative terminal, safely raise the car, remove intake ducting or undertrays as needed, then unbolt the starter from the bellhousing and transfer any heat shields or brackets. While in there, they’ll eyeball the ring gear and check for oil leaks that can shorten a starter’s life.

Drivers can help extend life by avoiding long, repeated crank attempts. If it doesn’t catch within a few seconds, pause, check battery voltage, and try again. After fitting a new unit, confirm clean, strong engagement and that the engine fires without chatter or drag. Done right, a good starter on the 8AR‑FTS should deliver years of hassle‑free service across Aussie and Kiwi conditions.

• Common symptoms of a failing starter on the 2.0T: slow crank, click with no spin, intermittent no‑start, burning smell after start attempts, or grinding at engagement.
• Helpful checks: battery test under load, voltage drop on starter positive and earth leads, and inspection of the starter relay/fuse.

FAQs

Does the 2018 Toyota Crown hybrid have a conventional starter motor?
No. The hybrid models use the motor‑generator (MG1) and the high‑voltage battery to start the engine. This is documented in Toyota’s Hybrid System (THS II and Multi Stage Hybrid) technical materials and NCF manuals. The 12‑volt battery still matters for powering control units and relays, but it doesn’t spin the engine.

Where is the starter motor on the 2018 Toyota Crown 2.0 turbo?
On the 8AR‑FTS petrol Crown, the starter is bolted to the transmission bellhousing on the engine side. Access is typically from underneath after removing an undertray, and sometimes from the top by moving intake ducting, depending on workshop setup.

Can a weak 12‑volt battery stop a hybrid Crown from “starting” even without a traditional starter?
Yes. Even though the engine is cranked by MG1, the hybrid system needs a healthy 12‑volt supply to boot the ECUs, close relays, and enable “Ready” mode. A tired 12‑volt battery can leave a hybrid Crown lifeless. Jump‑starting should follow the manufacturer’s hybrid‑specific procedure for safety.