Toyota Highlander Common Problems & Reliability Guide
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Overview
The Toyota Highlander is a midsize crossover SUV known for reliability and family-friendly features. Common issues across generations include catalytic converter problems, VVT-i system failures, transmission concerns, and oxygen sensor issues. The hybrid models (introduced in 2006) may experience battery and inverter cooling problems. Overall, the Highlander maintains Toyota's reputation for durability with fewer problems than competitors.
Quick Summary
By Generation
Available Engines
Common OBD2 Codes
Known Problems
Premature catalytic converter failure (P0420/P0430) - especially 2001-2003 models
Knock sensor failure (P0325/P0330) requiring intake manifold removal for replacement
EVAP system problems - charcoal canister and purge valve failures
Transmission fluid leaks from cooler lines and seals
Lower ball joint wear causing clunking noises
Dashboard cracking in hot climates
Oxygen sensor failures (P0135/P0155) on high-mileage vehicles
VVT-i oil line leaks on 3.3L V6 engines
Recalls
2005-2007: Windshield wiper motor linkage failure
2001-2003: Front suspension lower ball joint separation risk
2004-2006: Steering intermediate shaft replacement
Available Engines
Common OBD2 Codes
Known Problems
Catalytic converter failures (P0420/P0430) - common on 2008-2010 models
Ignition coil failures (P0351-P0356) causing misfires on V6 engines
VVT-i oil control valve failures causing rough idle and hesitation
Transmission slipping or delayed engagement (especially 2008-2009)
Hybrid battery cooling fan failures on hybrid models
Water pump leaks on 2GR-FE engines (around 100k miles)
Evaporative emission system leaks (P0441/P0446)
Rear differential noise on AWD models
Recalls
2008-2010: Floor mat entrapment and sticky accelerator pedal
2011-2013: Airbag inflator replacement (Takata)
2008-2011: Spare tire carrier cable corrosion
Available Engines
Common OBD2 Codes
Known Problems
Oxygen sensor heater circuit failures (P0037/P0057) on 2014-2016 models
Catalytic converter efficiency below threshold (P0420/P0430)
EVAP system small leak detection (P0456) - often gas cap or purge valve
8-speed automatic transmission shuddering or harsh shifting (2017-2019)
Carbon buildup on direct injection engines causing misfires
Hybrid inverter coolant pump failures
Headlight condensation issues (2014-2016)
Touchscreen infotainment freezing or black screen
Recalls
2014-2015: Airbag inflator replacement (Takata)
2018-2019: Engine stalling due to fuel pump failure
2014-2019: Brake booster vacuum pump inspection
Available Engines
Common OBD2 Codes
Known Problems
Fuel system too lean (P0171/P0174) - often PCV valve or vacuum leaks
EVAP system leaks (P0456/P0455) - canister or purge valve issues
8-speed automatic transmission delayed shifting when cold (2020-2023)
Hybrid battery cooling system issues on early 2020-2021 models
Infotainment system software glitches requiring updates
Catalytic converter theft (particularly 2020-2022 models)
Turbo wastegate rattle on 2024+ turbo models
Paint peeling on lower trim and bumpers (2020-2022)
Recalls
2020-2022: Fuel pump failures causing engine stalling
2021-2023: Hybrid system software update for potential stalling
2024: Turbo engine oil cooler pipe inspection
2020-2021: Backup camera display delay