Toyota offered the 2021 Avalon with three very different powertrains, and this factory service and repair manual is matched to the one actually under your hood — the hybrid 2.5L (A25A-FXS), the gas 2.5L (A25A-FKS) or the 3.5L V6 (2GR-FKS) — as well as to the year and trim, so the specifications and tightening sequences it calls out belong to your Avalon and not to a neighboring build.
Engines
- 2.5L 2487CC l4 HYBRID DOHC Naturally Aspirated
- 2.5L 2487CC l4 GAS DOHC Naturally Aspirated
- 3.5L 3500CC V6 GAS Naturally Aspirated
Trims
- Hybrid Limited
- Hybrid XLE
- Hybrid XSE
- Limited
- TRD
- Touring
- XLE
- XSE Nightshade
Known issues on the 2021 Avalon. One recall is on federal record for this model year. Campaign 23V865000 covers the air bag occupant classification sensor on certain 2020-2021 Avalon and Avalon Hybrid cars, part of a wider Toyota action that also reaches several other Toyota and Lexus models; the hazard is that an air bag does not deploy during a crash, which increases the risk of injury. Owners have filed 29 complaints for the year and Toyota has issued 169 technical service bulletins.
From an air bag warning on a Hybrid XSE to a scheduled service on the 3.5L V6, the figure you work to is Toyota's own, written for the 2021 Avalon.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Toyota Avalon and 2020 Avalon Hybrid, RAV4, and RAV4 Hybrid vehicles.
In the event of a crash, an air bag that does not perform as designed can increase the risk of injury.
Toyota will notify owners, and dealers will replace the steering column, free of charge. The recall began December 18,
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4,
An air bag that does not deploy during a crash increases the risk of injury.
Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safet
OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.
Some 2018 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.
Some 2005 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this Servic
The specific condition covered by this program is for a small engine coolant leak that can occur from the flow shut-off valve that can allow coolant to drip on other parts of the vehicle. This can cause "Engine Maintenance Required" to be d
Some 2021 2022 model year Avalon, 2018 2024 Camry, 2019 2025 model year Corolla, 2022 2025 model year Corolla Cross, and 2019 2025 model year RAV4 vehicles with A25A-FKS and M20A-FKS engines may have a MIL ON condition with one or more of t
Some 2018 2021 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit a condition in which an Engine Maintenance Required message is displayed in the Multi-Information Display (MID). Additionally, the
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant
Showing the 8 most recent of 169 technical service bulletins on file with NHTSA.
The contact owns a 2021 Toyota Avalon HV. The contact stated that while driving, all the instrument control panel lights
SEATS ARE NOT REGISTERING FOR AIR BAG AND THE MIDDLE BACK SEAT BELT ALARM GOES OFF SAYING TO PUT SEAT BELT ON, BUT NO ON
The contact owns a 2021 Toyota Avalon. The contact received notification of NHTSA Campaign Number: 23V865000 (AIR BAGS);
Dec 20,2023 Manufacturer Recall Number23TB15 NHTSA Recall Number23V865 Recall StatusRecall Incomplete, remedy not yet av
Stopped working with a message ' radar control in not available'
Showing the 5 most serious of 21 complaints filed with NHTSA.
