The LS 600h was Lexus's flagship when it launched, combining a 5.0-litre V8 with hybrid electric motors and permanent AWD. It was the first production V8 hybrid luxury sedan and remains one of the most technically ambitious cars Toyota has built. Build quality is exceptional and the 2UR-FSE engine has proven mechanically robust over high mileages, but the complexity of the air suspension, electronic brake system, and hybrid powertrain means that repairs can be expensive when they arise.· more· less
Robust 2UR-FSE V8 engineExceptional build quality and refinement
Air suspension repairs are costlyBrake actuator is a known weak point
Buy if: You want a refined, powerful luxury sedan with Toyota reliability at its core and can budget for occasional expensive repairs on complex systems.
Avoid if: You cannot absorb surprise repair bills in the €2,000-5,000 range or want a car where every component can be serviced cheaply.
Compressor wears out or air struts develop leaks, causing the car to sag unevenly · more· less
The LS 600h uses a TEMS (Toyota Electronic Modulated Suspension) air suspension system. The air compressor can fail outright or run continuously without achieving target pressure, typically after 100,000-150,000 km. Air struts develop leaks at their rubber bellows, causing individual corners to sag overnight. A Lexus dealer compressor replacement costs around €2,500-3,000. Aftermarket compressors are available for €600-900 but quality varies. Individual OEM air struts cost €1,000-1,800 each. When purchasing, listen for the compressor running continuously and check that all four corners are at the same height after the car has been parked overnight. A conversion to conventional coil springs is possible for approximately €1,500-2,000 but alters the ride character substantially.
Brake actuator assembly failure
€1,200 - 2,5002 of 7
Electronic brake actuator fails, causing hard pedal and cluster of warning lights · more· less
The LS 600h uses an integrated electronic-hydraulic brake actuator rather than a conventional brake booster. This unit is a known weak point, typically failing between 80,000 and 140,000 km. Symptoms include a hard brake pedal, a distinctive bark or squawk noise when pressing or releasing the pedal, and a cluster of warning lights (brake, ABS, VSC). Diagnostic code C1391 is the common flag. The entire actuator assembly must be replaced, and professional bleeding with Lexus Techstream software is required. Dealer replacement costs €2,000-2,500 installed. Rebuilt units from specialists are available for €1,200-1,500. This is not a DIY repair.
Dashboard and interior trim degradation
€1,500 - 5,0003 of 7
Rubberized coating on dashboard and trim becomes sticky and degrades in heat · more· less
This is the widely documented Lexus sticky dashboard problem, affecting the LS 600h particularly on pre-2013 models. The soft-touch rubberized coating on the dashboard, centre console, glove box, and door panels degrades over time due to heat and UV exposure, becoming sticky and eventually melting or cracking. Lexus offered warranty enhancement programs covering dashboard and interior panel replacement on affected models in some markets, but coverage depends on model year and region. Professional refinishing services cost €1,500-3,000 depending on how many panels are affected. Full dashboard replacement at a Lexus dealer can reach €5,000+. Always check every touchable surface during inspection.
Hybrid battery degradation
€2,500 - 5,5004 of 7
NiMH battery pack loses capacity over time, reducing fuel economy and electric assist · more· less
The LS 600h uses a large nickel-metal hydride battery pack to power its hybrid system. Degradation typically becomes noticeable after 150,000+ km or 12+ years, manifesting as reduced fuel economy, weaker electric assist during acceleration, and eventually hybrid system warning lights. The battery cooling fan and duct should be cleaned regularly (every 30,000-40,000 km) to extend battery life, as debris buildup reduces cooling efficiency. OEM replacement from Lexus is very expensive, often exceeding €5,000. Refurbished battery packs from hybrid specialists cost €2,500-3,500. Some owners report the original battery lasting well beyond 200,000 km with proper maintenance.
12V auxiliary battery drain
€200 - 4005 of 7
12V battery drains within days if the car is parked without use · more· less
The LS 600h has numerous electronic systems that draw power even when the car is switched off. If left parked for more than 7-10 days, the 12V auxiliary battery can drain completely, preventing the hybrid system from starting. This is a well-known characteristic rather than a defect. A quality AGM battery costs €200-350, and a trickle charger (CTEK or similar) is recommended for owners who do not drive daily. Replacing the 12V battery is straightforward and does not require dealer tools.
Inverter coolant pump failure
€400 - 1,2006 of 7
Electric coolant pump for the hybrid inverter fails, risking inverter overheating · more· less
The hybrid system has a separate coolant loop for the inverter, with its own electric water pump. If this pump fails, the inverter can overheat and trigger a Check Hybrid System warning, potentially causing the car to shut down. The pump itself costs approximately €200-400, plus €200-300 in labor. The key is correct diagnosis: some workshops incorrectly diagnose inverter failure and quote €4,000+ for a full inverter replacement when only the coolant pump or its relay has failed. Check for coolant circulation in the inverter reservoir with the car in Ready mode.
Mark Levinson amplifier failure
€800 - 1,8007 of 7
Premium audio amplifier fails, causing no sound or distorted output · more· less
The Mark Levinson premium audio system's amplifier unit can fail, resulting in complete loss of sound or severely distorted output from some or all speakers. Replacement from Lexus costs approximately €1,500-1,800 including installation. Specialist electronics repair shops can often rebuild the amplifier for €400-600. During inspection, test the audio system at various volume levels and check all speaker zones.
Solid powertrain but complex luxury systems need budget headroom
The 2UR-FSE V8 is one of the most reliable luxury-car engines of its era, and many LS 600h examples exceed 200,000 km without major powertrain issues. However, the air suspension, electronic brake actuator, and hybrid-specific components represent significant potential repair costs. The dashboard degradation issue affects most pre-2013 cars to some degree. Budget for specialist maintenance and verify that all applicable recalls have been completed before purchase.
Pre-Purchase Inspection Checklist
General checks
Service history
Complete Lexus dealer or specialist records essential. Verify oil changes, coolant flushes, and hybrid system inspections.
Tires
Check tread depth, age (date codes), and uneven wear. Uneven wear may indicate suspension problems.
Cold start
Start the car completely cold. The hybrid system should engage silently. Listen for any unusual sounds from the engine bay.
Test drive
Minimum 30 minutes including highway speeds. Pay attention to ride quality, braking feel, and any warning lights.
Specific for this vehicle
Check air suspension ride height overnight
Ideally inspect the car after it has been parked overnight. All four corners should be at equal height. A sagging corner indicates a leaking strut.
Test brake pedal feel and listen for squawk
Press and release the brake pedal repeatedly. A hard pedal, bark/squawk noise, or ABS/VSC warning lights indicate brake actuator failure.
Inspect all interior surfaces for sticky coating
Touch the dashboard, centre console, door panels, and glove box. Any sticky or melting surfaces indicate the known trim degradation issue.
+ 4 more checksShow less
Check hybrid battery health via diagnostic scan
Request a diagnostic readout of the hybrid battery. Look at individual cell voltages. Significant variation between cells indicates degradation.
Verify inverter coolant pump operation
With the car in Ready mode, check the inverter coolant reservoir for visible circulation. No movement suggests pump failure.
Test Mark Levinson audio at all volume levels
Play audio through all speakers. Listen for distortion, crackling, or dead zones that indicate amplifier failure.
Check for fuel pump and steering recall completion
Contact Lexus with the VIN to verify all applicable recalls have been completed.
Recalls and Technical Service Bulletins
Fuel pump assembly defect (vehicles with pumps manufactured from September 2013)Verify completed
Contact Lexus with the VIN to verify all recalls and technical service bulletins have been completed.
Warranty Status
Factory warranty (3 years)Expired on all LS 600h models
Hybrid battery warranty (5 years / 100,000 km)Expired on all models
All LS 600h XF40 models are outside their original 3-year factory warranty and 5-year/100,000 km hybrid battery warranty. Contact your local Lexus dealer with the VIN to check for any applicable warranty enhancement programs.
Sources: Research draws on model-specific owner forums and owner communities, recall information from official authorities, German automotive press, and multiple workshop cost references cross-checked against each other.
This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.
