Toyota A543E 4-Speed FWD Automatic · Toyota/Lexus · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
1995–2003 Lexus ES300 (some variants); 1995–2003 Toyota Avalon; V6 FWD transaxle variant in the A540-family lineage
| Configuration | 4-speed FWD electronic automatic transaxle |
|---|---|
| Gear Ratios | 1st 2.45:1 · 2nd 1.45:1 · 3rd 1.00:1 · 4th 0.72:1 · Rev 2.22:1 |
| Fluid Type | Toyota Type T-IV ATF |
| Fluid Capacity | 8.0 qts total, 4.0 qts service refill |
TCC shudder from T-IV degradation — common in Lexus ES300 applications.
Symptoms: Shudder at 40–55 mph under light throttle
Shift solenoids SL1/SL2 fail at high mileage.
Symptoms: Stuck in gear; OD light flashing; P codes
Valve body wear at 150k+ miles causes shift quality degradation.
Symptoms: Harsh shifts; delayed engagement
TCC inspected. Solenoids replaced. All clutch packs replaced. Valve body rebuilt. Full T-IV soft parts kit.
Toyota T-IV every 30,000 miles. Lexus ES300 owners often first notice shudder — a T-IV flush resolves most cases before rebuild is needed.
Classic TCC shudder. T-IV fluid flush resolves it in most cases. Persistent shudder after fresh fluid points to TCC wear requiring converter service.
Toyota Type T-IV ATF.
$1,500–2,000.
2 days.
Yes — Lexus ES300 transmissions are known for durability with proper T-IV maintenance.
Free diagnostic, written estimate, lifetime warranty. Chicago's A543E rebuild specialists since 1987.
