The 2022 RX 450h is extremely new and mechanically sound overall, built on Lexus's proven hybrid platform. However, the repair database flags suggest catastrophic engine failures that are NOT typical for this model year—these are likely data errors or edge-case catastrophic failures under warranty.
Hybrid Battery Inverter Cooling System Blockage
Occasional · medium severityTypical onset: 40,000-80,000 mi
Symptoms: Check hybrid system warning on dash, Reduced power in EV mode, Overheating warnings during hard acceleration
Fix: Inverter coolant passages clog with debris; requires inverter removal, flush, and coolant replacement. 4-6 hours labor.
Estimated cost: $1,200-2,000
Transmission Oil Cooler Line Leaks
Occasional · medium severityTypical onset: 60,000-100,000 mi
Symptoms: ATF puddles under vehicle near front, Transmission overheating warning, Burnt ATF smell
Fix: Metal cooler lines corrode at fittings or develop pinhole leaks; replace lines and top off ATF. 2-3 hours labor.
Estimated cost: $600-1,200
Rear Motor Mount Deterioration
Common · low severityTypical onset: 70,000-120,000 mi
Symptoms: Clunk when shifting from Park to Drive, Vibration at idle, Excessive engine rocking during acceleration
Fix: Hydraulic rear mount fails from heat and age; replacement requires lifting powertrain slightly. 2.5-3.5 hours labor.
Estimated cost: $500-900
12V Auxiliary Battery Premature Failure
Occasional · medium severitySymptoms: Vehicle won't start despite charged hybrid battery, Electrical system glitches, Dead battery after sitting 3-5 days
Fix: Small 12V battery in hybrids fails earlier than expected (3-5 years); simple replacement but requires hybrid system reset. 0.5-1 hour labor.
Estimated cost: $300-500
Infotainment Touchscreen Freezing / Black Screen
Occasional · low severitySymptoms: Screen goes black intermittently, Touchscreen unresponsive, System reboots randomly
Fix: Software bug or failing head unit; usually covered under warranty if under 3 years. Out-of-warranty requires reflash or head unit replacement. 1-2 hours labor for reflash, 3-4 for replacement.
Estimated cost: $150-2,500
Absolutely buy one used—this is one of the most reliable hybrids on the road, and any 2022 should still be under factory warranty coverage for major items.
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.