MyCarTSB

2024 Toyota Grand Highlander Engine Problems

5 owner-reported engine complaints from NHTSA data

5
Complaints
Feb 2025Oct 2025
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (5)

criticalENGINE
Filed: Feb 2025

Your 2024 Grand Highlander displayed a hybrid malfunction warning on the dashboard at just 2,300 miles. When the dealer inspected the engine, they found metal fragments in two cylinders and severe internal damage to a third cylinder. The hybrid system likely shut down to prevent further engine damage. The dealer will need to perform a complete engine inspection and likely replace the engine or affected cylinder components.

Parts you may need:

As an Amazon Associate, MyCarTSB earns from qualifying purchases.

NHTSA #: 11644234
highENGINE
Filed: Oct 2025

Your dashboard lights and warning alerts suddenly illuminated, including a hybrid system malfunction warning. Upon inspection at the dealership, a stone entered through a gap in the front grille and punctured the radiator, which the dealer determined was not warranty-covered. The large gap in the front grille design appears to allow road debris to damage the radiator directly.

Parts you may need:

As an Amazon Associate, MyCarTSB earns from qualifying purchases.

NHTSA #: 11694480
highENGINE
Filed: Aug 2025

Your AC condenser is leaking, causing your air conditioning to blow hot air instead of cold, making the interior of your vehicle very hot. Toyota is saying the damage came from road debris and won't cover it under warranty, pointing to the front grill not providing enough protection. You're concerned this is a design flaw in how the grill protects the condenser, and that Toyota has no solution to prevent this from happening repeatedly.

Parts you may need:

As an Amazon Associate, MyCarTSB earns from qualifying purchases.

NHTSA #: 11680783
mediumENGINE
Filed: Jul 2025

Your car has difficulty shifting smoothly when you first start it, especially during those initial moments. This is most noticeable during cold starts before the engine has warmed up. Getting the transmission to engage properly during startup may require a transmission fluid check or servicing.

Parts you may need:

As an Amazon Associate, MyCarTSB earns from qualifying purchases.

NHTSA #: 11674893
mediumENGINE,FUEL/PROPULSION SYSTEM
Filed: Jul 2024

When you accelerate from a stop, your car hesitates or feels sluggish until you release the accelerator and press it again. You may also notice the engine revving high at low speeds before shifting to the next gear. This could involve checking fuel delivery, spark plugs, or transmission shift programming.

NHTSA #: 11603100

Other 2024 Toyota Grand Highlander Issues