The 2022 Highlander is still too new for widespread pattern failures, but early data shows the 3.5L V6 suffers from catastrophic piston/ring failures due to manufacturing defects, while hybrids appear more reliable. Transmission oil cooler leaks are emerging as a cross-platform concern.
Symptoms: Excessive oil consumption (quart per 1,000 miles or worse), Blue smoke from exhaust on cold start or acceleration, Loss of power, rough idle, Check engine light with misfire codes (P0300-P0306), Knocking or ticking from engine under load
Fix: Full engine rebuild or short block replacement required. Manufacturing defect left machining debris in cylinders, scoring walls and destroying rings. Toyota has issued Technical Service Bulletins but coverage is case-by-case. 25-35 hours labor for short block swap including oil system flush and ancillary gaskets.
Estimated cost: $8,000-12,000
Transmission Oil Cooler Line Leak
Occasional · medium severity
Typical onset: 30,000-80,000 mi
Symptoms: Transmission fluid puddle under vehicle (red or pink fluid), Low fluid warning on instrument cluster, Harsh shifting or delayed engagement when fluid level drops, Visible fluid seeping from cooler line connections at radiator
Fix: Replace transmission oil cooler lines and/or external cooler assembly. Corroded or improperly torqued fittings at factory. 2-3 hours labor plus full ATF flush. Inspect radiator end-tanks for ATF contamination in coolant (crossover failure rare but catastrophic).
Symptoms: Second-row seatback will not stay locked in upright position, Recliner mechanism feels loose or floppy, Seat unexpectedly reclines during driving (occupant injury risk), Clicking or grinding noise when adjusting seatback
Fix: Replace second-row seat recliner mechanism under recall. Manufacturing defect in recliner pawl allows disengagement. Dealer-only repair, 1.5-2 hours per side. If out of recall eligibility window, aftermarket seat track assemblies available but fitment challenging.
Estimated cost: $0 (recall) or $800-1,400 per seat
Hybrid Inverter Coolant Pump Noise
Occasional · low severity
Typical onset: 40,000-90,000 mi
Symptoms: High-pitched whine or buzz from under hood when hybrid system active, Noise increases with electric motor load (acceleration, climbing), No performance loss but noise is intrusive in cabin, Hybrid system warning light in severe cases of pump failure
Fix: Replace hybrid inverter coolant pump. Bearing failure in electric pump. Straightforward replacement but requires hybrid system depowering and coolant drain/refill. 2-3 hours labor. Early pump failures sometimes covered under hybrid component warranty (10yr/150k mi in CA-emission states, 8yr/100k federal).
Estimated cost: $800-1,400
Fuel Injector Clogging (V6, Direct Injection)
Occasional · medium severity
Typical onset: 50,000-100,000 mi
Symptoms: Rough idle, especially when cold, Hesitation or stumble on acceleration, Check engine light with fuel trim or misfire codes, Carbon buildup visible on intake valves during inspection, Failed emissions test due to incomplete monitors
Fix: Clean or replace fuel injectors; perform intake valve carbon cleaning. Direct injection engines lack port fuel wash, allowing carbon accumulation. Injector service 3-4 hours, walnut blasting intake valves adds 5-6 hours if severe. Use Top Tier fuel and occasional Italian tune-up to delay onset.
Estimated cost: $600-2,200
Owner tips
V6 owners: monitor oil consumption religiously every 1,000 miles for first 60k; document for warranty claims if consumption exceeds 1 qt per 3,000 mi
Hybrid models show better reliability early; prioritize these over V6 if buying used
Use Top Tier fuel exclusively on V6 to minimize direct-injection carbon buildup
Check for open recalls (seat recliners) before purchase; insist on completion documentation
Hybrid is a solid buy; avoid the 3.5L V6 unless you can verify no oil consumption issues and secure extended powertrain coverage—engine failures are bankrupting early owners.
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.
Fitment notes: AGM battery required for hybrid system; located in engine bay; smaller auxiliary battery capacity due to hybrid system
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Every control module on the 2020-2026 Toyota Highlander — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
⚠️ Sensor calibration may be required; usually self-learning after installation
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2021-2024 Highlander and Highlander Hybrid vehicles. The second-row seat backs may fail to lock into position during seat back adjustment.
Consequence: A seat back that fails to lock may not properly restrain an occupant during a crash, increasing the risk of injury.
Remedy: Dealers will replace the return springs in the seat back recliner assemblies, free of charge. Interim letters notifying owners of the safety risk were mailed April 27, 2026. Additional letters will be sent once the final remedy is available, anticipated August 27, 2026. This is a phased recall. Owners may contact Toyota’s customer service at 1-800-331-4331. Toyota's numbers for this recall are 26TB06 and 26TA06.
TIRES · 24V452000
2024-06-18
Southeast Toyota Distributors, LLC (SET) is recalling certain 2021-2024 Highlander vehicles. The 20-inch accessory tires with an insufficient load rating for the vehicle's Gross Axle Weight Rating (GAWR) were installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
Consequence: Tires with an insufficient load rating can be overloaded and fail, increasing the risk of a crash.
Remedy: SET will inspect and replace the tires and information placard, as necessary free of charge. Owner notification letters were mailed August 16, 2024. Owners may contact SET's customer service at 1-866-405-4226. SET's number for this recall is SET24A.
TIRES · 24V419000
2024-06-06
Gulf States Toyota, Inc. (GST) is recalling certain 2022-2024 model year Highlander L and Highlander LE vehicles equipped with the Blackout Package that includes 20" black alloy wheels and tires. The installed tires have an insufficient load rating. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
Consequence: Tires with an insufficient load rating may be overloaded and fail, increasing the risk of a crash.
Remedy: GST will inspect and replace the tires as necessary, and install a new tire information label as necessary, free of charge. Owner notification letters were mailed August 8, 2024. Owners may contact GST customer service at 1-800-444-1074. GST's number for this recall is 24R1.
STRUCTURE:BODY:BUMPERS · 23V720000
2023-10-26
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2023 Highlander & Highlander Hybrid vehicles. During normal vehicle operation, minor impact to the front lower bumper cover may result in the cover coming loose or detaching.
Consequence: A detached front bumper cover can become a road hazard, increasing the risk of a crash.
Remedy: Dealers will repair or replace the upper and lower front bumper covers as necessary, free of charge. Owner letters were mailed April 22, 2024. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB12/23TA12.
EQUIPMENT:OTHER:LABELS · 22V310000
2022-05-06
Gulf States Toyota, Inc. (GST) is recalling certain 2022 4Runner, Tacoma, Highlander, and Highlander Hybrid vehicles. The load carrying capacity modification labels may not be permanent and can fade, becoming illegible. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
Consequence: An illegible label may allow the vehicle to be overloaded, increasing the risk of a crash.
Remedy: GST will notify owners by mail, including a replacement load carrying capacity modification label for their vehicle and detailed replacement instructions, free of charge. Owner notification letters were mailed June 30, 2022. Owners may contact GST customer service at 1-800-444-1074. GST's number for this recall is 22R1.
Performance
Horsepower
243hp
Torque
175lb-ft
0–60 mph
7.3sec
Quarter mile
15.6sec
Top speed
112mph
Fuel economy (EPA)
City
35mpg
Highway
35mpg
Combined
35mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
3,500lb
Payload
1,460lb
Curb weight
4,510lb
EPA class
Standard Sport Utility Vehicle 4WD
Wiper blades
Fourth generation (XU70). Standard hook-type attachment for front blades.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2022 Toyota Highlander 2.5L I4 Hybrid and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.