Toyota · Known Issues
2007 Toyota Highlander Problems: 10 Known Issues
2007 model year · 1,200+ owner reports · Updated September 2026
2007 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2007 model year · 1,200+ owner reports · Updated September 2026
2007 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 1,200+ owner reports, the 2007 Toyota Highlander has 10 documented known issues, with 8 rated critical. The most serious are Hybrid Battery Pack Degradation and Failure ($1,500-$5,500 repair), 2.4L 2AZ-FE Head Gasket and Head Bolt Thread Failure ($2,500-$5,000 repair), Hybrid Inverter Coolant Pump Failure (Inverter Overheat) — P0A05 / P0A93 ($700-$1,100 repair), Radiator Internal Transmission-Cooler Failure — ATF/Coolant Cross-Contamination ("Strawberry Milkshake") ($400-$4,500 repair), Hybrid Brake Booster / ABS Actuator Assembly Failure (Accumulator Leak) — C1391 ($1,600-$3,500 repair), 2GR-FE VVT-i Oil Supply Hose Rupture — Sudden Oil Loss (Service Campaign LSC 90K) ($250-$900 repair), V6 Engine Oil Sludge / Gelling (1MZ-FE / 3MZ-FE) — Oil Pump Pickup Starvation ($500-$6,000 repair) and Hybrid Inverter Intelligent Power Module (IPM) Transistor Solder Failure — Hybrid System Shutdown/Stall (Recall 13V396000) ($0-$4,500 repair). The most commonly reported issue is Hybrid Battery Pack Degradation and Failure with 1,200 owner reports. Across all issues with published estimates, repair costs range from $60 to $6,000. DIY maintenance guides at au7o.io.
ELECTRICAL SYSTEM
Fujian Wanda Automobile Glass Industry (Wanda) is recalling certain aftermarket Replacement Windshields sold for use in 2014-2018 Toyota Highlander vehicles. The windshields have an attached wire harness that water may leak into, possibly causing damage to the vehicle's Engine Control Module (ECM).
EQUIPMENT
Gulf States Toyota, Inc. (GST) is recalling certain 2017 Toyota Highlander and Highlander Hybrid vehicles equipped with accessory roof rail cross bars. The fasteners for the roof rails may not be torqued properly.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus IS350, 2018-2020 Lexus LC500, 2018 Lexus LS500, 2019 Lexus LS500h, 2018-2019 Lexus LX570, 2017 Lexus RC200t, 2019 Lexus RC300, RC350, 2017 and 2019-2020 Lexus RX350, 2018-2020 RX350L, 2019 Lexus UX200, 2018-2019 Lexus NX300 vehicles. The low-pressure fuel pump inside the fuel tank may fail.
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018 Toyota Camry and Highlander vehicles, 2017 Toyota Sienna and Tacoma vehicles and 2017 Lexus RX350 vehicles. During the manufacturing process, the oil galley in the rotor for the brake booster vacuum pump assembly may have been improperly machined possibly resulting in a sudden loss of brake assist.
TIRES:TEMPORARY/EMERGENCY SPARE TIRE
Gulf States Toyota, Inc. (Gulf States) is recalling certain 2017 4Runner , 86, Avalon, Camry, Camry Hybrid, Corolla, Corolla iM, Highlander, Highlander Hybrid, Prius, Prius C, RAV4, RAV4 Hybrid, Sienna and Yaris vehicles. The spare tire air pressure was not adjusted to the proper pressure as stated on the Tire Pressure Label.
+ 6 more recalls. Check all on NHTSA.gov
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According to Au7o's analysis of 1,200+ owner reports, the 2007 Toyota Highlander has 10 documented issues. The most frequently reported are: Hybrid Battery Pack Degradation and Failure, 2.4L 2AZ-FE Head Gasket and Head Bolt Thread Failure, Hybrid Inverter Coolant Pump Failure (Inverter Overheat) — P0A05 / P0A93. Of these, 8 are rated critical and should be addressed promptly.
The 2007 Toyota Highlander has 10 known issues documented across 1,200+ owner reports. 8 issues are rated critical: Hybrid Battery Pack Degradation and Failure and 2.4L 2AZ-FE Head Gasket and Head Bolt Thread Failure and Hybrid Inverter Coolant Pump Failure (Inverter Overheat) — P0A05 / P0A93 and Radiator Internal Transmission-Cooler Failure — ATF/Coolant Cross-Contamination ("Strawberry Milkshake") and Hybrid Brake Booster / ABS Actuator Assembly Failure (Accumulator Leak) — C1391 and 2GR-FE VVT-i Oil Supply Hose Rupture — Sudden Oil Loss (Service Campaign LSC 90K) and V6 Engine Oil Sludge / Gelling (1MZ-FE / 3MZ-FE) — Oil Pump Pickup Starvation and Hybrid Inverter Intelligent Power Module (IPM) Transistor Solder Failure — Hybrid System Shutdown/Stall (Recall 13V396000). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Toyota Highlander issues range from $0 to $6,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Hybrid Battery Pack Degradation and Failure, typically costs $1,500-$5,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Highlander Hybrid NiMH battery packs degrade over time, with individual cells failing after 8-12 years or 150,000+ miles. Failed cells cause reduced fuel economy, loss of hybrid assist, and eventual inability to start the vehicle. Repairs typically run $1,500-$5,500. Severity: high.
The 2001-2007 Highlander with the 2.4L 2AZ-FE 4-cylinder engine suffers from a design flaw where the aluminum head bolt threads strip out of the engine block. The plastic intake manifold traps heat against the block, causing thermal fatigue of the aluminum threads. This leads to… Repairs typically run $2,500-$5,000. Severity: high.
The Highlander Hybrid uses a dedicated electric water pump to circulate coolant through the power inverter/converter, which runs separately from the engine cooling system. The electric pump wears out and stops circulating coolant, allowing the inverter and hybrid electronics to o… Repairs typically run $700-$1,100. Severity: high.
Automatic-transmission Highlanders route ATF through a cooler integrated into the main radiator end tank. When the internal separator corrodes/cracks, engine coolant and transmission fluid mix, producing a pink 'strawberry milkshake' emulsion. Coolant in the ATF destroys the clut… Repairs typically run $400-$4,500. Severity: high.
The regenerative-braking brake actuator (the integrated ABS/booster/accumulator pump module) is a known weak spot on the Highlander Hybrid. The accumulator develops an internal leak and the pump runs constantly, triggering a loud, repetitive whirring/buzzing and warning lights; i… Repairs typically run $1,600-$3,500. Severity: high.
On 2GR-FE 3.5L V6 engines (built up through roughly April 2008), the rubber center section of the oil supply hose that feeds the VVT-i actuator degrades from exposure to corrosive PCV gases. A pinhole forms and expands, then the hose bursts, dumping engine oil rapidly. Owners rep… Repairs typically run $250-$900. Severity: high.
The early Highlander 3.0L 1MZ-FE (and successor 3.3L 3MZ-FE) V6 is prone to engine oil sludge/gelling. Blow-by gases and moisture that fail to burn off (aggravated by short-trip driving, extended oil intervals and a PCV valve that clogs) turn the oil to a gel that coats the valve… Repairs typically run $500-$6,000. Severity: high.
On the first- and second-generation Highlander Hybrid (2GR-FXE / 3MZ-FE hybrid), the Intelligent Power Module inside the hybrid inverter assembly carries control-board transistors whose operating temperature can exceed what the solder beneath them tolerates. The solder degrades,… Repairs typically run $0-$4,500. Severity: high.
A very common Highlander check-engine complaint is P0420 (Catalyst Efficiency Below Threshold, Bank 1) and its Bank 2 twin P0430. The downstream oxygen sensor readings track the upstream sensor too closely, indicating the catalytic converter is no longer scrubbing exhaust efficie… Repairs typically run $200-$2,500. Severity: medium.
The Highlander Hybrid cools its high-voltage battery by drawing cabin air through an intake located under the cargo floor, past a filter, through a blower and across the pack. Dust, lint and pet hair progressively clog the filter and cake the fan blades. Airflow drops, cells run… Repairs typically run $60-$400. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.