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2009 LEXUS IS F

5.0L V8•RWD•AUTOMATIC•gas
5-Year Cost of Ownership
$31,609 maintenance + known platform issues
~$6,322/yr · 530¢/mile equivalent · $5,159 maintenance + $6,500 expected platform issues
Common Problems & Known Issues

The 2009 IS F is a hand-built performance sedan with Yamaha-tuned 5.0L V8 (2UR-GSE) that's mechanically stout but plagued by carbon buildup issues and a few expensive weak points. The 8-speed automatic transmission and differential are generally solid, but when things break on this low-production model, parts and labor aren't cheap.

Carbon Buildup on Intake Valves (Direct Injection)

Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: rough idle, especially cold start, hesitation or stumble during light throttle, reduced fuel economy, occasional misfire codes (P030X)
Fix: Walnut blasting intake valves requires removing intake manifold and plenum. 6-8 hours labor. Some shops use chemical spray treatments as temporary band-aid, but physical cleaning is the real fix. This is inherent to all direct-injection engines without port injection.
Estimated cost: $800-1,400

Transmission Oil Cooler Lines Leaking

Occasional · high severity
Typical onset: 80,000-130,000 mi
Symptoms: transmission fluid spots under vehicle, typically passenger side, burnt transmission fluid smell, low fluid level on dipstick, transmission slipping or delayed engagement if leak progresses
Fix: Metal cooler lines corrode where they pass near exhaust or rub against frame rails. Requires replacing hardlines and sometimes external cooler itself. 3-5 hours labor depending on line routing complexity. Flush and refill required.
Estimated cost: $600-1,200

Rear Differential Bushing Failure

Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: clunking from rear on hard acceleration or deceleration, vibration through chassis under load, visible differential movement when rocking car in gear, chirping or squeaking over bumps
Fix: Rear subframe differential mount bushings crack and separate, especially on cars driven hard. Requires dropping exhaust and sometimes entire rear subframe depending on which mounts failed. OEM bushings recommended over poly. 4-6 hours labor for both sides.
Estimated cost: $800-1,600

Valve Spring Recall Fallout and Secondary Damage

Occasional · high severity
Symptoms: sudden catastrophic misfire, metallic rattling from engine bay, complete loss of power, check engine light with multiple misfire codes, metal debris in oil
Fix: Early 2UR-GSE engines had defective valve springs that could break and drop into cylinder, destroying piston, cylinder wall, and requiring complete engine rebuild or replacement. Recall addressed springs, but some engines were damaged before fix. If buying used, verify recall completion (Toyota ZE6/Lexus ELD). Engine rebuild: 30-40 hours. Short block swap: 20-25 hours.
Estimated cost: $8,000-15,000

Water Pump Bearing Failure

Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: squealing or grinding from front of engine, coolant seepage from weep hole, rough bearing feel when spinning pump pulley, overheating in severe cases
Fix: Water pump runs off accessory belt (not timing chain), but replacement requires removing fan shroud and potentially radiator for access. 3-4 hours labor. Always replace thermostat and coolant at same time. Not an interference engine, so failure won't bend valves, but will strand you.
Estimated cost: $600-1,000

Fuel Injector Seals and Coil Pack Degradation

Occasional · low severity
Typical onset: 100,000-150,000 mi
Symptoms: fuel smell in cabin or engine bay, rough running when hot, intermittent misfire on specific cylinder, hard starting when heat-soaked
Fix: Direct injection fuel injector O-rings harden and leak, causing raw fuel smell. Coil packs also degrade from heat cycles. Injector seal replacement: 4-5 hours (must remove intake plenum). Individual coil replacement: 0.5 hour each. Do all seals if doing the job, but coils can be done individually as they fail.
Estimated cost: $800-1,400 (all injector seals + plenum gaskets); $150-250 per coil
Owner tips
  • Run Top Tier fuel and occasional Italian tune-up (high RPM runs) to minimize carbon buildup, but walnut blasting is inevitable by 80k.
  • Verify valve spring recall (ELD/ZE6) was completed before purchasing — check service history or VIN with Lexus dealer.
  • Change rear differential fluid every 30k-40k mi (especially if tracked) and use OEM 75W-85 GL-5 to prolong bushing life.
  • Inspect transmission cooler lines annually on lift for corrosion — catching early can prevent expensive transmission damage.
  • Keep up with 5k-mile oil changes using 0W-20 synthetic — this engine has tight bearing tolerances and sludge will kill it.
Buy one with verified recall completion and full service records under 80k miles — after that, budget $2k/year for the carbon cleaning and wear items that come with a high-strung V8, but the platform is otherwise bulletproof if maintained.
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.
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