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Toyota · Known Issues

2026 Toyota Grand Highlander Problems & Issues

2026 model year · 330+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 330+ owner reports, the 2026 Toyota Grand Highlander has 6 documented known issues, with 2 rated critical. The most serious are Rear Axle Carrier Made With Insufficient Material Strength May Fracture (Recall 26V437000) ($0-$0 repair) and Radiator, A/C Condenser and Hybrid Inverter Cooler Punctured by Road Debris Through the Open Lower Grille ($1,400-$3,500 repair). The most commonly reported issue is 8-Speed Automatic Harsh Shifting and Torque Converter Shudder with 175 owner reports. Across all issues with published estimates, repair costs range from $1,400 to $3,500. DIY maintenance guides at au7o.io.

In This Article

  • Grand Highlander Drivetrain1
  • Grand Highlander Cooling1
  • Grand Highlander Transmission1
  • Grand Highlander Safety/Recalls1
  • Grand Highlander Other1
  • Grand Highlander Electrical1
  • Recalls7
  • FAQ
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In This Article

  • Drivetrain1
  • Cooling1
  • Transmission1
  • Safety/Recalls1
  • Other1
  • Electrical1
  • Recalls7
  • FAQ

All 6 Known Issues

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ALL YEARS202620252024

On the 2026 Toyota Grand Highlander, toyota recalled certain 2026 Grand Highlander and Grand Highlander Hybrid vehicles — along with the platform-mate Lexus TX, TX Hybrid and TX Plug-In Hybrid — because the rear axle carriers may have been manufactured with insufficient material strength and could break. NHTSA campaign 26V437000 was filed July 8, 2026 and covers roughly 5,400 vehicles. A fractured rear axle carrier can produce a sudden loss of vehicle stability and control while driving. Toyota's internal numbers for the campaign are 26TB13 and 26TA13 (26LB08 and 26LA08 on the Lexus side). This is confined to the 2026 model year; NHTSA's records do not place the 2024 or 2025 Grand Highlander in this population.

Common Symptoms

  • Sudden loss of vehicle stability or control
  • Abnormal noise or play from the rear axle area
  • Recall notification letter identifying an affected rear axle carrier sub-assembly code

How to Fix

Free recall remedy. Dealers inspect the rear axle carrier sub-assembly code and replace affected sub-assemblies at no charge under NHTSA campaign 26V437000 (Toyota 26TB13 / 26TA13). Owner notification letters were scheduled to mail August 23, 2026. Owners can confirm applicability by VIN through Toyota at 1-800-331-4331 or the NHTSA recall lookup. Because the consequence is a sudden loss of stability, do not defer the inspection.

Typical repair cost:$0 - $0

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2024-2026 Toyota Grand Highlander, nHTSA opened investigation 11754975 covering roughly 87,000 model year 2024-2026 Grand Highlanders after owners reported that the lower fascia uses large open apertures with no protective mesh screen or secondary baffle, letting highway rocks and road debris pass straight through and puncture the heat exchangers stacked behind the grille — the engine radiator, the A/C condenser, and, on hybrid models, the hybrid inverter cooler. Owners describe no sensation of impact at the time; the failure surfaces as a rapid coolant loss followed within seconds by a hybrid-system or engine warning cascade and a severe reduction in drive power at highway speed. One owner reported the loss of propulsion at 62 mph with traffic behind them; another lost propulsion at 16,755 miles with simultaneous engine, hybrid system and AWD warnings. When the condenser is the part hit, the symptom is instead a total loss of A/C. Toyota dealers have described the grille design as a known pattern, but warranty claims are commonly denied as road-hazard damage, leaving owners with the bill.

Common Symptoms

  • Sudden loss of drive power or propulsion at highway speed with no prior warning
  • Cascade of engine, hybrid system and AWD warning messages instructing the driver to pull over
  • Coolant puddle or rapid coolant loss with no collision
  • Air conditioning stops cooling entirely after refrigerant leaks out
  • Punctured radiator, condenser or inverter cooler found by the dealer with a rock strike through the grille

How to Fix

No recall exists — investigation 11754975 is open and unresolved, so watch for a future campaign. The repair is replacement of whichever heat exchanger was punctured (radiator, condenser, or hybrid inverter cooler) plus coolant or refrigerant recharge; owners report roughly $1,450 for a condenser and materially more for a radiator or inverter cooler. Warranty is usually denied as road-hazard damage, so claim it through comprehensive insurance. An aftermarket mesh grille screen behind the lower fascia opening is the only preventive measure available, and it should be fitted without blocking airflow. If drive power drops or a hybrid-system warning appears, pull over — continuing to drive after coolant loss risks engine or inverter damage. Report the failure to NHTSA to feed the open investigation.

Typical repair cost:$1,400 - $3,500

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
175 owners

On the 2024-2026 Toyota Grand Highlander, the 8-speed automatic transmission in the turbocharged Grand Highlander exhibits harsh 1-2 and 2-3 shifts during light throttle driving, along with torque converter shudder at highway speeds between 40-60 mph. The issue is more pronounced when the transmission is cold.

This issue also affects: Toyota 4Runner, Toyota Corolla Hatchback, Toyota Highlander

Common Symptoms

  • Harsh or jerky shifts at low speeds
  • Shudder or vibration at 40-60 mph
  • Delayed engagement from Park to Drive
  • Transmission hunting between gears on hills
  • Clunk when shifting from Reverse to Drive

How to Fix

Toyota has released updated transmission calibration software (TSB-0065-24) to address shift quality. A transmission fluid flush with Toyota WS fluid and TCM reprogramming resolves most cases. Severe shudder may require torque converter replacement.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Toyota 00289-ATFWS genuine Automatic Transmission Fluid WS, 1 quart

    correct-spec drain-and-refill fluid when Toyota diagnosis or the applicable service procedure calls for fluid replacement—not a blanket flush or guaranteed torque-converter cure Fitment/availability: Toyota World Standard ATF consumable;…

    Longo Toyota of Prosper Parts

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipRequest TSB-0065-24 transmission reprogramming at your dealer - covered under powertrain warranty.
Typical repair cost:$0 - $2,800

Research This Issue

Based on 175 owner reports

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Community Reported
Medium Confidence175 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2024-2026 Toyota Grand Highlander, the 2024-2026 Toyota Grand Highlander is named in NHTSA recall 25V744000 when built with the Panoramic View Monitor system. Toyota found a software error that can cause the rearview camera to freeze or display a blank screen once the three-row SUV is put in reverse, leaving the vehicle out of compliance with Federal Motor Vehicle Safety Standard 111, "Rear Visibility." This is separate from the Grand Highlander's earlier instrument-panel blanking recall - here the fault sits in the parking assist software that feeds the camera view. NHTSA lists about 1,024,407 vehicles for the campaign as a whole across the Toyota, Lexus, and Subaru Solterra models included.

Common Symptoms

  • Backup camera image freezes when reverse is selected
  • Blank screen instead of the rear camera view
  • Panoramic View Monitor shows no live image behind the vehicle

How to Fix

Toyota dealers perform a free parking assist software update to restore the rear camera image; no parts are needed and there is no charge. Toyota's numbers for the recall are 25TB13 and 25LB06, with owner letters mailed January 2, 2026. Enter your Grand Highlander's VIN at nhtsa.gov/recalls to confirm whether it is included and whether the update has already been applied, or call 1-800-331-4331.

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
155 owners

On the 2024-2026 Toyota Grand Highlander, the Grand Highlander exhibits excessive wind noise at highway speeds, particularly from the driver-side A-pillar and side mirror area. The large windshield and tall greenhouse design create aerodynamic noise that enters the cabin through door seal gaps. Some owners also report noise from the panoramic roof seals.

Common Symptoms

  • Whistling noise at speeds above 55 mph
  • Wind noise louder on driver side
  • Noise increases with crosswinds
  • Noise from A-pillar or mirror area
  • Reduced noise when pressing on door panel

How to Fix

Have the dealer inspect and reseat the door weatherstripping. Apply additional foam tape to the inner door seal channel per Toyota TSB guidance. Aftermarket door seal kits from WeatherTech can provide supplemental wind noise reduction. Check panoramic roof alignment if noise comes from overhead.

Owner tips & cautions

  • TipTry the tape test first - mask off sections of the door seal with painters tape to isolate the leak point.
Typical repair cost:$0 - $300

Research This Issue

Based on 155 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence155 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2024-2026 Toyota Grand Highlander, as a new model, the Grand Highlander has experienced various infotainment software bugs including touchscreen freezes, navigation glitches, wireless Apple CarPlay/Android Auto connectivity drops, and occasional display blackouts. Toyota has addressed many of these through over-the-air (OTA) and dealer-applied software updates. These are typical first-model-year software issues that improve over time with updates.

Common Symptoms

  • Touchscreen freezes or becomes unresponsive
  • Wireless CarPlay/Android Auto connection drops
  • Navigation display glitches
  • Screen goes black momentarily
  • Audio system cuts out briefly

How to Fix

First verify the concern by checking the multimedia head unit for stored diagnostic trouble codes and confirming the current software/calibration version with Toyota Techstream or the vehicle’s built-in update menu. If the symptoms match known software-related behavior, perform all available over-the-air updates or have the dealer apply the latest multimedia firmware and telematics/software patches, then reset and re-pair all phones for wireless Apple CarPlay/Android Auto. If blackouts or audio loss continue after updates, inspect the head unit connectors, USB hub, and battery voltage/ground integrity, and replace the display/audio head unit only if Toyota diagnostics confirm hardware failure; software updates are often free under warranty, while out-of-warranty diagnosis typically runs about $150-$250 and head unit replacement can exceed $1,200-$2,500.

Typical repair cost:$0 - $0

Research This Issue

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Community Reported
Medium Confidence
NHTSA Recalls7 recalls

BACK OVER PREVENTION:DISPLAY FUNCTION

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2022-2026 Toyota, Lexus, and Subaru Solterra vehicles equipped with a Panoramic View Monitor (PVM) system. Please see the recall report for a complete list of models. A software error may cause the rearview camera to freeze or display a blank screen when the vehicle is in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

Campaign #25V74400030/10/2025

POWER TRAIN:AXLE ASSEMBLY

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2026 Lexus TX Plug-In Hybrid, TX Hybrid, TX, Toyota Grand Highlander Hybrid, and Grand Highlander vehicles. The rear axle carriers may have been manufactured with insufficient material strength and could break.

Campaign #26V43700008/07/2026

STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2026 Lexus TX350, RX350 Hybrid, RX350, RX500 Hybrid, TX500 Hybrid, Toyota Grand Highlander, and Grand Highlander Hybrid vehicles. Due to a manufacturing error, the front steering knuckles may crack and break, which can result in a loss of vehicle steering control.

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Other Toyota Models

Toyota RAV460Toyota Corolla54Toyota Camry54Toyota Highlander51Toyota 4Runner47Toyota Tacoma46

Frequently Asked Questions

What are the most common Toyota Grand Highlander problems?

According to Au7o's analysis of 330+ owner reports, the 2026 Toyota Grand Highlander has 6 documented issues. The most frequently reported are: Rear Axle Carrier Made With Insufficient Material Strength May Fracture (Recall 26V437000), Radiator, A/C Condenser and Hybrid Inverter Cooler Punctured by Road Debris Through the Open Lower Grille, 8-Speed Automatic Harsh Shifting and Torque Converter Shudder. Of these, 2 are rated critical and should be addressed promptly.

Is the Toyota Grand Highlander reliable?

The 2026 Toyota Grand Highlander has 6 known issues documented across 330+ owner reports. 2 issues are rated critical: Rear Axle Carrier Made With Insufficient Material Strength May Fracture (Recall 26V437000) and Radiator, A/C Condenser and Hybrid Inverter Cooler Punctured by Road Debris Through the Open Lower Grille. 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.

How much does it cost to fix common Toyota Grand Highlander problems?

Repair costs for known Toyota Grand Highlander issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Rear Axle Carrier Made With Insufficient Material Strength May Fracture (Recall 26V437000), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2026 Toyota Grand Highlander Rear Axle Carrier Made With Insufficient Material Strength May Fracture (Recall 26V437000)?

Toyota recalled certain 2026 Grand Highlander and Grand Highlander Hybrid vehicles — along with the platform-mate Lexus TX, TX Hybrid and TX Plug-In Hybrid — because the rear axle carriers may have been manufactured with insufficient material strength and could break. NHTSA campa… Repairs typically run $0-$0. Severity: high.

What is the 2024-2026 Toyota Grand Highlander Radiator, A/C Condenser and Hybrid Inverter Cooler Punctured by Road Debris Through the Open Lower Grille?

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.

Data sourced from 330+ owner reports, NHTSA recalls, TSBs, and automotive forums.

Campaign #26V59800017/09/2026

ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023-2024 Toyota Venza, 2023-2025 RAV4 Prime, RAV4, Highlander, GR Corolla, Crown, 2024-2025 Lexus TX, LS, Toyota Tacoma, Grand Highlander, and 2025 Lexus RX, Toyota Crown Signia, Camry, RAV 4 Plug-in Hybrid (PHEV), and 4 Runner vehicles. Due to an error in the instrument panel software at vehicle startup, the instrument panel may fail to display vehicle speed, brake system, and tire pressure warning lights.

Campaign #25V59500011/09/2025

EQUIPMENT:OTHER:LABELS

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2024-2025 Toyota Tundra, Tacoma Hybrid, Tacoma, RAV4 Hybrid, Land Cruiser Hybrid, Lexus GX550, 2024-2026 Tundra Hybrid, 2025 Sequoia Hybrid, Crown Signia, Grand Highlander, Lexus TX500 Hybrid, Lexus NX350 Hybrid, 2025-2026 Grand Highlander Hybrid, and Lexus TX350 vehicles. The load carrying capacity modification label may display inaccurate added weight values. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."

Campaign #26V17900024/03/2026

+ 2 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

NHTSA opened investigation 11754975 covering roughly 87,000 model year 2024-2026 Grand Highlanders after owners reported that the lower fascia uses large open apertures with no protective mesh screen or secondary baffle, letting highway rocks and road debris pass straight through… Repairs typically run $1,400-$3,500. Severity: high.

What is the 2024-2026 Toyota Grand Highlander 8-Speed Automatic Harsh Shifting and Torque Converter Shudder?

The 8-speed automatic transmission in the turbocharged Grand Highlander exhibits harsh 1-2 and 2-3 shifts during light throttle driving, along with torque converter shudder at highway speeds between 40-60 mph. The issue is more pronounced when the transmission is cold. Repairs typically run $0-$2,800. Severity: medium.

What is the 2024-2026 Toyota Grand Highlander Panoramic View Monitor Software Error Kills the Reverse Camera Image (Recall 25V744000)?

The 2024-2026 Toyota Grand Highlander is named in NHTSA recall 25V744000 when built with the Panoramic View Monitor system. Toyota found a software error that can cause the rearview camera to freeze or display a blank screen once the three-row SUV is put in reverse, leaving the v… Severity: medium.

What is the 2024-2026 Toyota Grand Highlander Excessive Wind Noise from A-Pillar and Mirror Area?

The Grand Highlander exhibits excessive wind noise at highway speeds, particularly from the driver-side A-pillar and side mirror area. The large windshield and tall greenhouse design create aerodynamic noise that enters the cabin through door seal gaps. Some owners also report no… Repairs typically run $0-$300. Severity: low.

What is the 2024-2026 Toyota Grand Highlander Infotainment Software Bugs and Display Issues?

As a new model, the Grand Highlander has experienced various infotainment software bugs including touchscreen freezes, navigation glitches, wireless Apple CarPlay/Android Auto connectivity drops, and occasional display blackouts. Toyota has addressed many of these through over-th… Repairs typically run $0-$0. Severity: low.