2021 Toyota Highlander Transmission Fluid & Service
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick answer
- Transmission Make/Model: Toyota U881F (Direct Shift-8AT)
- OEM Fluid Spec: Toyota WS (World Standard) Automatic Transmission Fluid
- Drain & Fill Capacity: Approximately 4.5 – 5.0 quarts (4.3 – 4.7 liters)
- Full Overhaul Capacity: Approximately 7.1 quarts (6.7 liters)
- Filter OEM Part Number: Verify with dealer or service manual (typically a non-serviceable internal filter for the life of the transmission or requires significant disassembly).
- Recommended Service Interval: Inspect every 60,000 miles or 72 months; replace only if primarily used for towing, heavy usage, or off-road, or for preventative maintenance around 90,000 – 100,000 miles.
Fluid type explained
The 2021 Toyota Highlander, when equipped with the standard internal combustion engine, utilizes the Toyota U881F Direct Shift-8AT automatic transmission. This advanced 8-speed automatic requires a very specific fluid to ensure proper operation, longevity, and fuel efficiency. Toyota specifies the use of Toyota WS (World Standard) Automatic Transmission Fluid.
Do not substitute other types of ATF. Toyota WS is a low-viscosity, long-life fluid engineered precisely for the internal components and operational temperatures of Toyota's modern transmissions. Using an incorrect fluid, even one that claims to be
More specs for the 2021 Toyota Highlander
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2021 Toyota Highlander Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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