This is the complete reference for Toyota and Lexus automatic transmission maintenance. Fluid specs, service intervals, common codes, and what to watch for — all in one place. U660E: 6-speed, FWD/AWD. Camry, Avalon, ES350, RX350, Highlander (2007–2017). Fluid: Toyota WS. Capacity: ~3.7 qts drain-and-fill, ~9.8 qts total. Most common issue: TCC shudder from degraded WS. Watch for P0770, P0741. Service interval: 60,000 miles normal, 40,000 towing/heat.
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Toyota WS ATF
Search AmazonThe foundation of every Toyota transmission maintenance plan. Toyota part number 00289-ATFWS. Buy genuine Toyota OEM and verify the part number on the label. Keep 4–5 quarts on hand and service on a mileage schedule that reflects how you actually use the vehicle — not Toyota's warranty-oriented "lifetime" guidance.
Check Price on AmazonBlueDriver Bluetooth OBD2 Scanner
$89.95Read Toyota-enhanced codes, monitor live TCC slip and TFT, and verify adaptive relearn after every service. Every Toyota or Lexus owner who manages their own maintenance needs a scanner that reads Toyota protocol — the generic layer tells you almost nothing useful. BlueDriver gives you the full picture for $90.
Check Price on AmazonLucas Oil Transmission Fix
$14.87Add to any Toyota fluid service where shudder, cold-shift harshness, or early slip codes are present. Conditions TCC clutch surfaces, restores solenoid seal compliance, and supports a clean adaptive relearn on fresh WS. A consistent addition to any Toyota service where symptoms point to fluid degradation as the root cause.
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