2023 LEXUS LC 500

Typical onset: 20,000-60,000 mi

Symptoms: Sudden loud knocking or ticking from lower engine block, Metal shavings in oil, oil pressure warning light, Severe loss of power, engine seizure in worst cases, Often preceded by slightly elevated oil consumption

Fix: Complete engine rebuild or short block replacement required. 40-60 labor hours for removal, disassembly, machining inspection, replacement of pistons, rings, bearings, reassembly, and reinstallation. Early 2UR-GSE engines had piston-to-bore clearance issues causing ring flutter under high RPM cold starts. Lexus issued updated pistons but never a formal recall.

Estimated cost: $18,000-28,000

Typical onset: 40,000-80,000 mi

Symptoms: Transmission fluid spots under vehicle, typically pink/red, Burnt transmission fluid smell after highway driving, Transmission temperature warning on gauge cluster, Slipping or delayed shifts when fluid level drops

Fix: The steel hardlines to the external cooler can corrode at crimp points or develop pinhole leaks from road salt and debris. Replace affected lines and top off ATF, flush if contaminated. 3-5 hours labor depending on which line fails—some require subframe lowering for access.

Estimated cost: $800-1,500

Typical onset: 50,000-90,000 mi

Symptoms: Clunk or thud when shifting from Park to Drive/Reverse, Vibration through center console at idle, Excessive driveline movement visible under acceleration, Rubbing or scraping noise over bumps

Fix: The 10-speed automatic sits on hydraulic mounts that crack and weep fluid, especially the rear mount. Inspect all mounts; typically replace rear and one side mount together. 2-3 hours labor, requires trans support and partial exhaust removal.

Estimated cost: $600-1,100

Symptoms: Rough idle, stumbling on acceleration, especially under load, Check engine light with lean fuel trim codes (P0171/P0174), Hard starting or extended cranking when hot, Loss of power at higher RPMs

Fix: In-tank fuel pump module includes a non-serviceable filter. Contaminated fuel (bad gas, water intrusion, tank sediment) can clog it prematurely. Requires fuel tank drop, pump module replacement, tank cleaning. If caught early, sometimes fuel system flush and injector cleaning suffice. 4-6 hours for pump replacement.

Estimated cost: $1,200-2,200

Typical onset: 60,000-100,000 mi

Symptoms: Oil weeping visible at cylinder head mating surface, Slight oil smell from engine bay after spirited driving, No coolant loss, no overheating, no white smoke, Primarily cosmetic but can worsen over time

Fix: Some 2UR-GSE engines develop minor external head gasket oil seepage (not internal coolant failure). Labor-intensive fix due to DOHC layout: cam timing reset, valve adjustment verification. 18-24 hours labor for both banks if addressing proactively. Many owners defer until other work justifies heads-off.

Estimated cost: $4,500-7,000