| Engine oil & filter | SAE 0W-20 (5W-20 only as a stopgap) · ILSAC GF-6A · ≈5.9 US qt per owners (Toyota-Club lists 5.6 L) | 10,000 mi / 12 months; 5,000 mi / 6 months on dirt or dusty roads | Filter 90915-YZZN1: hand-tight plus ¾ turn after gasket contact. One Trailhunter owner's VIN lookup flagged that filter as a possible misfit — check by VIN on hybrids.Oil filter (Toyota 90915-YZZN1) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Engine air filter | 17801-YZZ11 (standard). TRD Pro / Trailhunter use a reusable conical filter (Toyota PTR03-35241-AA) | Inspect every 5,000 mi on dusty roads | The Pro/Trailhunter filter is meant to be cleaned, not binned.Engine air filter (non-Pro/Trailhunter) (Toyota 17801-YZZ11) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Cabin air filter | 87139-0C010 (standard) or 87139-30110 (carbon) | Check every 15,000 mi | Behind the glovebox; airflow arrows point down.Cabin filter, standard (Toyota 87139-0C010) · ToyotaPartsDeal (Toyota OEM) ↗Cabin filter, carbon (Toyota 87139-30110) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Hybrid battery intake filters (i-FORCE MAX) | G92DH-34010 and G92DJ-34010 | Inspect at every oil change if you drive dusty roads or carry a dog | Behind the second-row seats, one per side. Owners report clogged filters; driving dirt roads with the rear window down makes it worse.Hybrid battery intake filter No. 1 (Toyota G92DH-34010) · ToyotaPartsDeal (Toyota OEM) ↗Hybrid battery intake filter No. 2 (Toyota G92DJ-34010) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Spark plugs | Toyota 90919-01303 is listed for the T24A-FTS (in the NX350) — confirm 4Runner fitment by VIN | Per the maintenance chart confirm in manual | Required service under the emission-control warranty, so keep receipts.Spark plug (T24A-FTS) (Toyota 90919-01303) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Engine (and intercooler / inverter) coolant | Toyota Super Long Life Coolant · gas ≈12.0 L; hybrid 11.4 L engine + 2.3 L inverter (PCU) | First at 100,000 mi / 120 months, then every 50,000 mi / 60 months | Inspect level and freeze point of both loops on hybrids.Toyota Super Long Life Coolant, pre-mixed (Toyota 00272-SLLC2) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Automatic transmission (8-speed) | Toyota ATF WS · 11.5 L (gas) / 12.5 L (hybrid) total | Inspect per chart; replace under severe service (towing, long idling) | Owners report overheating on long low-speed climbs off-road — worth a fluid check on any truck that's been worked hard.Toyota ATF WS (Toyota 00289-ATFWS) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Transfer case | Toyota Transfer Gear Oil LF 75W · 1.1 L (part-time) / 1.4 L (full-time) | Replace on the severe-service schedule (dusty roads, towing) | Fill to 0–5 mm below the fill hole, wait five minutes, recheck. Plugs 27 ft-lb.Toyota Transfer Gear Oil LF (1 L) (Toyota 00279-DGOLF) · ToyotaPartsDeal (Toyota OEM) ↗Transfer case drain/fill gasket (Toyota 90430-A0003) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Front & rear differentials | Toyota Differential Gear Oil LT 75W-85 GL-5 · front 1.3 L (part-time) / 1.2 L (full-time) · rear 5.6 L (6.5 L Trailhunter) | Every 15,000 mi when towing, using a roof carrier or heavily loaded | Many owners do an early break-in change. The rear holds far more than a Tacoma's — buy about 8 qt for both diffs.Toyota Differential Gear Oil LT 75W-85 (qt) (Toyota 00279-DGOLT-01) · ToyotaPartsDeal (Toyota OEM) ↗Crush washer — front fill, rear drain & fill (Toyota 12157-10010) · ToyotaPartsDeal (Toyota OEM) ↗Crush washer — front diff drain (Toyota 90430-24017) · ToyotaPartsDeal (Toyota OEM) ↗ |
| Brake fluid | DOT 3 / DOT 4 (SAE J1703/J1704) | Inspect level/condition per chart | Confirm the squeal TSB pads were fitted if the truck squeals in reverse.Brake fluid · RockAuto ↗ |
| Propshaft grease & bolt torque | NLGI No. 2 grease · five zerks on 4WD (rear slip yoke is booted) | Grease on the dusty-road schedule; the chart also calls for propeller-shaft bolt re-torque | Short pumps on the front slip yoke only.Universal joints · RockAuto ↗ |