2021 Toyota Highlander Maintenance Schedule

“My 2021 Toyota Highlander makes a whining sound when driving. Took vehicle to dealership and was told it is a $10,000 repair and repair is critical.”

“60k miles on the car and the transmission needs to be replaced out of pocket due to a gear pinon wearing down. This is a 10k dollar repair and just happens to be after the warranty has expired.”

“Known transmission failure.whining noise when accelerating. T-SB-0008-21”

“Rear lift gate doesn't fully open or close sometimes. I have to manually assist in opening or closing after trying the key fob, inside push button and rear switch above the license plate. I have attempted to reset the height adjustment thinking it would fix it, with no success.…”

“Trunk has stopped working. It loudly beeps and will not open on its own. Trunk has to be manually opened and shut with great force to be used.”

“Rear liftgate motors no longer functioning.”

“Under braking conditions, typically at higher speeds or while going downhill, vehicle will lurch or accelerate momentarily before braking again. This has caught 3 drivers in our family off-guard as it is intermittent and sudden. This is unpredictable and causes the braking…”

“My 2021 Toyota Highlander Hybrid has a braking issue identified in Toyota Service Bulletin T-SB-0059-23, Hybrid Regenerative Brake Transition Feeling Improvement. When going downhill and applying the brake, the vehicle lurches forward temporarily as the braking system…”

“As your braking coming to a stop, the vehicle surges forward, feels like you lost your brakes and then it stops. If the car in front of you were to stop suddenly, you would hit them from behind. It…”

“Recall remedy is not a available in timely manner. Recall # 23ta15”

“The contact owns a 2021 Toyota Highlander. The contact received notification of NHTSA Campaign Number: 23V865000 (AIR BAGS). However, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a…”

“The contact owns a 2021 Toyota Highlander. The contact received notification of NHTSA Campaign Number: 23V865000 (Air Bags); however, the part for the recall repair was not yet available. The dealer was contacted; however, the contact was informed that the parts were not yet…”

“Air conditioning lines eroded and needed to be repaired after 26,000 miles/ 3 or 4 years. A/C line repair cost was $2500. Vehicle is garage kept and cleaned regularly during winter, it should not be having rusting problems, especially in this good of condition.”

“My 2021 Toyota Highlander, purchased with 16k miles, has a leak in the AC system in the rear of the vehicle (as of May 2025, at 3 years 10 months into the vehicle's service, with 28k miles). This pipe runs the length of the car and costs $2000-$3000 to repair. This was…”

“While driving westbound on I-8 at approximately 70 MPH in the left lane, a warning message suddenly appeared on my dashboard stating that a malfunction in the hybrid system had been detected. Immediately after the alert, the vehicle lost power and stopped accelerating. I was…”

“This appears to be a fuel pump or something with the fuel issue on a 2021 Toyota Highlander L series. While driving it would stop and switch off at stop lights and stop sign. The codes that come up have to do with fuel being lean. However this also affects the braking system…”

“Failed seals on roof rack that allowed water to enter the A pillars. Unknown potential damage to air bag system, and electrical wiring. Smaller leaks can go undetected and damage components over time without owners knowledge. Dealer confirmed water intrusion, Toyota refused to…”

“During rain, the A-pillar and headliner show evidence of a leak. Open source research found this is likely due to faulty or poor quality components used in the roof rail system. My vehicle is completely stock with no additions or installations on the roof, just the factory rails.”

“The contact owns a 2021 Toyota Highlander. The contact stated that while driving on the highway at 65 MPH, the front bumper became detached. There was no warning light illuminated. The contact pulled over and zip-tied the bumper to the frame of the vehicle. The vehicle was not…”

“The contact owns a 2021 Toyota Highlander. The contact received notification of NHTSA Campaign Number: 23V720000(Structure); however, the part to do the recall repair was not yet available. An unknown local dealer was contacted. The contact stated that the manufacturer had…”