Parts for your 2022 Toyota Land cruiser-Alternator

2022 Toyota Land Cruiser Alternator: What It Does and How to Look After It

Based on Toyota’s service literature for the 300 Series (J300), the 2022 Land Cruiser is fitted with a belt-driven 12‑volt alternator on both engines offered that year—the V35A‑FTS twin‑turbo petrol and the F33A‑FTV twin‑turbo diesel. Toyota’s Electronic Parts Catalogue lists an Alternator Assembly for the J300, and the engine bay fuse/relay box includes ALT/ALT‑S fusing for the charging circuit. The owner’s and repair manuals also describe charging system tests and alternator inspection. So yes, this model uses an alternator.

The alternator’s job is to turn engine rotation into electrical energy, keeping the 12‑volt battery topped up and powering everything from headlights and ECUs to winches and fridges under the bonnet. On the 300 Series it’s an ECU‑controlled “smart” unit, managing voltage to reduce fuel use and heat while still protecting the battery and electronics. Output is high for a modern 4x4, making it happy towing, touring, and running accessories when driven sensibly.

Good servicing keeps it sweet. At every regular service interval, check the serpentine belt for cracks, glazing or frayed edges, and make sure the automatic tensioner is working smoothly. Give the battery terminals and main earths a clean and tug-test the alternator plug and charge cable. With a multimeter at the battery, expect roughly 13.8–14.6 V at idle with some load