The 2019 Toyota Crown is a Japan-market executive sedan with strong hybrid powertrain reliability, but the 8AR-FTS turbo four has documented valvetrain issues and the transmission oil cooler is a known weak point across all variants. Overall a well-built platform with isolated but potentially expensive problem areas.
8AR-FTS Turbo Engine Carbon Buildup and Valvetrain Noise
Common · medium severityTypical onset: 40,000-80,000 mi
Symptoms: rough idle and hesitation on cold starts, ticking or tapping noise from valvetrain at idle, reduced power and fuel economy, check engine light with misfire codes
Fix: Direct injection causes intake valve carbon buildup requiring walnut blasting (3-4 hours). Persistent ticking often requires lifter replacement which means camshaft removal and timing chain work (8-12 hours labor). Some cases need full top-end refresh.
Estimated cost: $800-3,500
Transmission Oil Cooler Leaks
Occasional · high severityTypical onset: 60,000-100,000 mi
Symptoms: transmission fluid puddles under vehicle, low transmission fluid warning, overheating transmission in hot weather or towing, mixing of coolant and ATF causing milky fluid
Fix: External cooler lines corrode at connections or the internal cooler in the radiator develops pinhole leaks allowing coolant/ATF cross-contamination. External cooler replacement is 2-3 hours; internal requires radiator replacement and full fluid flush (4-6 hours). Contamination cases need transmission rebuild.
Estimated cost: $600-5,000
Hybrid System Inverter Cooling Pump Failure (Hybrid Models)
Occasional · high severityTypical onset: 70,000-120,000 mi
Symptoms: hybrid system warning light with turtle mode, reduced power and EV mode unavailable, whining or grinding noise from under hood, overheating warnings during hot weather driving
Fix: The inverter cooling pump circulates coolant through the hybrid power electronics. Failure causes immediate limp mode to protect expensive components. Pump replacement requires partial hybrid system disassembly (4-5 hours). Toyota often covers under extended hybrid warranty to 10yr/150k.
Estimated cost: $1,200-2,000
Transmission Mount Deterioration
Common · low severityTypical onset: 50,000-90,000 mi
Symptoms: clunking when shifting from park to drive, excessive vibration at idle in gear, shuddering during acceleration, visible sagging or cracking of rubber mount
Fix: Hydraulic transmission mount breaks down faster than expected, especially on turbo models with more torque. Replacement is straightforward with proper support (2-3 hours labor). Often done with engine mount refresh for best results.
Estimated cost: $400-800
Harmonic Balancer Deterioration (8AR-FTS)
Rare · high severityTypical onset: 80,000-130,000 mi
Symptoms: chirping or squealing from front of engine, visible wobble of crankshaft pulley, serpentine belt repeatedly throwing or wearing unevenly, rough vibration at specific RPM ranges
Fix: The rubber insulator in the harmonic balancer separates causing severe vibration and potential crankshaft damage if ignored. Requires removal of accessories and careful extraction (3-4 hours). Critical to address immediately when symptoms appear to prevent internal engine damage.
Estimated cost: $600-1,200
Fuel Injector Carbon Fouling (All Engines)
Occasional · medium severityTypical onset: 60,000-100,000 mi
Symptoms: rough idle and stumbling under light throttle, misfires on one or more cylinders, difficult cold starts requiring extended cranking, check engine light with fuel trim or misfire codes
Fix: Direct injection systems are prone to injector tip carbon buildup. Often corrected with professional cleaning service (2-3 hours) but stubborn cases need injector replacement. Hybrid models less affected due to lower engine runtime. Use top-tier fuel to slow progression.
Estimated cost: $400-1,800
Solid buy if you find a well-maintained hybrid with service records, but avoid high-mileage turbo four models unless valvetrain work is documented—the hybrids are far more bulletproof long-term.
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.