2023 Toyota Highlander Transmission Problems

Your transfer case failed suddenly while you were stopped at a red light, even though your Highlander had only 65,000 miles and was within the first 3 years of ownership. The failure has left your vehicle unable to operate, and repair estimates have been very expensive. A transfer case replacement or rebuild will likely be necessary to get your car back on the road.

Your vehicle accelerated on its own without you pressing the accelerator pedal. When you lifted your foot slightly from the brake at a stoplight, your car suddenly lurched forward and triggered the automatic safety stop system. This has happened more than once. The issue likely involves the accelerator pedal sensor, throttle body, or engine control computer needing inspection and possible replacement.

Your car is experiencing delayed acceleration when you press the gas pedal, jerking movements when shifting between gears, and a whining noise coming from the transmission area. These issues together suggest a transmission problem that should be inspected soon. A transmission fluid check, filter replacement, or internal transmission service may be needed to resolve the jerking and noise.

Your Highlander is experiencing significant acceleration problems, including engine lag, hesitation at stop lights, and rough bucking when you press the gas pedal. The engine RPMs jump erratically at idle, and the transmission struggles to shift smoothly, especially into second gear, making it difficult to safely merge with traffic. Even though Toyota issued a special campaign update, the problem persists. Resolving this will likely require a comprehensive fuel system and transmission diagnostic, possibly including fuel injector cleaning, transmission fluid service, or engine control module reprogramming.

Your Highlander feels sluggish and hesitates for several seconds when accelerating from a stop, requiring you to push the gas pedal much farther than normal before it lurches forward. The transmission seems to struggle finding the right gear, causing the vehicle to buck and stutter while driving with unpredictable, jerky shifts that make the driving experience unpredictable. Additionally, your cruise control has trouble reaching and maintaining the speed you set. These issues started around 2,000 miles and may require transmission fluid service, a software update, or internal transmission inspection by a dealer.

Your Highlander hesitates and jerks when you accelerate from a stop or low speed (0-10 mph), even with the auto start/stop feature turned off. This delay in engine response creates a safety risk, especially when turning left across traffic. The issue started around 1,000 miles and persists at 20,000 miles with no warning lights. Diagnosis and repair may involve checking fuel injectors, throttle response sensors, or engine control module reprogramming.

Your 2023 Highlander has trouble starting and jerks when you use 87 octane fuel, but runs better with 93 octane. You may also notice the engine RPMs jump around when switching between ECO and normal driving modes. These issues could cause unexpected acceleration that poses a safety risk. The fix may involve a software update or fuel system recalibration from Toyota.

When you accelerate, especially from a complete stop, your engine hesitates briefly then surges forward unexpectedly. This problem started around 2,000 miles and continues during acceleration up to 50 mph, making it unsafe to merge into traffic. Your Toyota dealer couldn't identify the cause, and other owners have reported the same issue.

Your Highlander's engine has inconsistent acceleration when starting from a stop — it may not respond immediately when you press the gas pedal, then surge forward unpredictably. This delayed and uneven response makes it difficult to predict how the car will accelerate, which is especially concerning when crossing traffic. The issue likely involves the fuel or ignition system's response to your throttle input.

Your Highlander hesitates or stutters when you press the gas pedal, meaning it doesn't accelerate smoothly—especially problematic when merging into traffic or turning. This appears to be a widespread issue affecting multiple 2023 Highlanders with the 2.4L turbo engine. The fix will likely require a software update or engine control module reprogramming through a Toyota dealership, possibly via a Technical Service Bulletin (TSB).

Your 2023 Highlander has been shuddering while driving since you bought it with just 7 miles on the odometer. You've noticed a loss of power that makes it harder to turn, accelerate on highways, and respond in traffic—creating safety concerns, especially with children in the car. You've taken the vehicle to the shop at least 4 times to address this issue. This may involve a transmission fluid flush, transmission filter replacement, or internal transmission service to correct the shuddering and power loss.

Your 2023 Highlander hesitates noticeably when you accelerate from a complete stop, which creates a safety concern when merging into traffic. This delay happens in all drive modes (eco, normal, and sport) and has been present since you bought the vehicle. The issue likely stems from the fuel or engine management system and may require a software update or fuel system inspection.

Your vehicle hesitates or delays when you accelerate from a stop. The dealership has confirmed they noticed this hesitation during testing, but no diagnostic codes were found to pinpoint the exact cause. Getting to the bottom of this may require further diagnostic testing or a software update to the engine control system.