2022-2024 Toyota HVAC Blower Motor High-Pitched Noise TSB

Some 2022-2024 Toyota vehicles may exhibit a high-pitched noise originating from the front Heating, Ventilation, and Air Conditioning (HVAC) blower motor. This condition occurs specifically when the air conditioner or heater is operating. Toyota has issued Technical Service Bulletin (TSB) T-SB-0098-24 to address this specific Toyota HVAC blower noise.

This TSB covers a wide range of Toyota models, including the Avalon, Camry, Corolla, Crown, Grand Highlander, Highlander, Prius, RAV4, and Venza, across various hybrid and Prime variants. While the noise does not affect the operational functionality of the vehicle, a new heater cover has been developed to help reduce or eliminate this high-pitched noise, improving cabin comfort for owners.

Symptoms

Owners of affected 2022-2024 Toyota vehicles may notice a distinct high-pitched noise coming from the front of the vehicle's interior. This noise is typically present when the HVAC system is actively running, whether for cooling or heating purposes. The Toyota HVAC blower noise is a primary indicator for this condition.

Diagnosis / Trigger Conditions

To confirm the presence of the Toyota HVAC blower noise, a technician will operate the vehicle's air conditioner or heater and listen for the high-pitched sound emanating from the front HVAC blower motor. If the noise is confirmed, the repair procedure outlined in TSB T-SB-0098-24 applies. If no such noise is detected, further diagnosis using the applicable Repair Manual is recommended.

Repair Procedure Summary

The repair involves installing a newly designed heater cover to the blower motor case. The general steps for this procedure include:

1. Confirm the Condition: Verify that the high-pitched noise is present when the HVAC system is active.
2. Access the Blower Motor: Remove the No. 2 instrument panel under cover sub-assembly. Specific instructions for this step, tailored to each model and model year, are available in the Toyota Technical Information System (TIS) Repair Manual.
3. Install the Heater Cover: Attach the new heater cover (part number 87114-33060) to the blower motor case. This involves cleaning the area with a lint-free cloth, ensuring the adhesive backing of the cover is firmly attached, and confirming the blower motor is fully enclosed.
4. Re-assemble: Re-install the No. 2 instrument panel under cover sub-assembly, again referring to the TIS Repair Manual for model-specific instructions.
5. Verify Repair: Confirm that the high-pitched noise from the front HVAC blower motor has been reduced or eliminated after the installation.

Required Parts

The primary part required for this repair is a specific heater cover:

• Part Number: 87114-33060
• Part Name: Cover, Heater
• Quantity: 1

Important Warnings

Technicians performing this repair must adhere to specific instructions to ensure proper installation and prevent damage:

• Do NOT cover the HVAC foot duct with the newly installed heater cover.
• Do NOT remove the blower motor connector during the installation process.

Owner Action / Warranty Information

If you own a 2022-2024 Toyota Avalon, Camry, Corolla, Crown, Grand Highlander, Highlander, Prius, RAV4, or Venza and notice a high-pitched noise from your HVAC system, you should contact your authorized Toyota dealer. This repair is covered under the Toyota Basic Warranty, which is typically in effect for 36 months or 36,000 miles (or 60,000 kilometers for the Mexico market), whichever comes first, from the vehicle's in-service date. Warranty claims are submitted using OP Code AC2403 and OFP 87103-#####*.

This condition is not considered a safety defect, but rather a comfort issue addressed by a technical service bulletin to improve the ownership experience.

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Source: NHTSA ID 11010351