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2024 LEXUS LS 500

3.5L V6 Twin Turbo•RWD•AUTOMATIC•gas•turbo
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5-Year Cost of Ownership
$27,836 maintenance + known platform issues
~$5,567/yr · 460¢/mile equivalent · $7,131 maintenance + $2,355 expected platform issues

Common Problems & Known Issues

The 2024 LS 500 uses Lexus's 3.5L twin-turbo V6 (V35A-FTS) paired with a 10-speed automatic. While generally reliable, this platform has shown carbon buildup issues on direct-injection engines and some early transmission cooler/mount failures that need monitoring.

Carbon Buildup on Intake Valves (Direct Injection)

Common · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: rough idle when cold, hesitation on acceleration, misfires under load, reduced fuel economy
Fix: Walnut blasting the intake valves is the proper fix. Requires removing intake manifold. 4-6 hours labor depending on access. Some shops use chemical induction cleaners as temporary measures but walnut blasting is definitive.
Estimated cost: $600-1,200

Transmission Oil Cooler Line Leaks

Occasional · high severity
Typical onset: 30,000-70,000 mi
Symptoms: transmission fluid puddles under vehicle, burnt transmission fluid smell, slipping shifts when fluid level drops, check engine light with transmission codes
Fix: The quick-connect fittings on cooler lines can crack or O-rings fail. Replace affected lines and top off fluid. If caught early, transmission isn't damaged. 2-3 hours labor. If transmission overheated from low fluid, you're looking at rebuild territory.
Estimated cost: $400-800

Transmission Mount Deterioration

Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: clunk when shifting from park to drive, excessive vibration at idle in gear, visible sag or cracking in rubber mount, harsh engagement into reverse
Fix: The hydraulic transmission mount wears faster than expected on these. Replacement is straightforward but requires supporting the transmission. 2-3 hours labor. OEM mount recommended over aftermarket.
Estimated cost: $500-900

Fuel Injector Carbon Fouling

Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: cylinder misfires, rough running especially when cold, fuel smell from exhaust, check engine light with misfire codes
Fix: Direct injection puts high demands on injectors. Carbon can clog the tips or internals wear out. Diagnosis requires flow testing. Individual injector replacement takes 3-4 hours on this V6 due to turbo packaging. Full set replacement recommended if one fails at high mileage.
Estimated cost: $800-2,000

Turbocharger Wastegate Rattle

Rare · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: rattling noise on cold start that disappears when warm, whistling under boost, reduced power output, overboost or underboost codes
Fix: Wastegate actuator arms can develop play or the wastegate valve itself can stick. Requires turbo removal and rebuild or replacement. Each turbo is 8-12 hours labor due to tight engine bay. Most shops replace rather than rebuild at this price point.
Estimated cost: $3,000-5,500

High-Pressure Fuel Pump Failure

Rare · high severity
Typical onset: 80,000-130,000 mi
Symptoms: hard starting especially when hot, loss of power under acceleration, engine stalling at idle, fuel pressure codes, metallic ticking from engine bay
Fix: The mechanical high-pressure fuel pump driven off the camshaft can fail. When it does, metal debris contaminates the fuel system requiring injector replacement and system flushing. Pump replacement alone is 4-6 hours, but contamination cleanup adds significant time and cost.
Estimated cost: $2,000-6,000
Owner tips
  • Use Top Tier gasoline religiously and consider periodic fuel system cleaning to combat direct injection carbon
  • Check transmission fluid color and level every oil change — early detection of cooler leaks saves transmissions
  • Avoid extended idling in gear which accelerates transmission mount wear on these heavy sedans
  • If buying used, get a borescope inspection of intake valves to assess carbon buildup before purchase
Solid luxury sedan if maintained properly, but the direct-injection carbon issue and transmission cooler weakness mean you want full service records and should budget $1,500/year for the quirks after 60k miles.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.

Labor Times — 2024 Lexus LS 500

481 jobs across 17 categories

body (31)

brakes (36)

cooling (21)

drivetrain (24)

electrical (75)

engine (71)

exhaust (22)

hvac (23)

interior (24)

maintenance (31)

suspension (47)

transmission (30)

🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.
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