2018-2021 Toyota Models Flow Shut-off Valve Coolant Leak

Toyota has launched Customer Support Program 24TE04 to address a potential issue with a small engine coolant leak originating from the flow shut-off valve. This program reflects Toyota's commitment to customer satisfaction beyond the standard warranty period.

This condition can lead to coolant dripping onto other vehicle components, potentially affecting various systems. While the flow shut-off valve is typically covered by Toyota's New Vehicle Limited Warranty for 36 months or 36,000 miles, this program provides extended coverage for related repairs.

Symptoms of a Coolant Leak

Owners experiencing this issue may notice specific indicators. The most common symptom is a warning message displayed on the instrument cluster stating, "Maintenance Required."

In some cases, the engine coolant leak can also cause the vehicle's air conditioning (A/C) system to not function normally. If you observe these symptoms, particularly a Toyota Camry coolant leak, it is recommended to have your vehicle inspected.

Affected Toyota Models

Customer Support Program 24TE04 covers approximately 2,384,700 vehicles in total. The program applies to various Toyota models produced between Mid-October 2017 and Early February 2021. The following models and model years are included:

Model Name	Model Year
Avalon & Avalon HV	2019-2021
Camry & Camry HV	2018-2021
Corolla	2020-2021
Corolla HB	2019-2021
Highlander HV	2020-2021
RAV4 & RAV4 HV	2019-2021
RAV4 PHV	2021
Sienna HV	2021
Venza	2021

Program Coverage and Warranty Details

Toyota is providing extended coverage for the flow shut-off valve coolant leak under this program. The Primary Coverage is valid until November 30, 2025, regardless of the vehicle's mileage. This ensures a broad window for initial repairs.

Following the primary coverage, Secondary Coverage will apply for 10 years from the vehicle's date of first use or 100,000 miles, whichever occurs first. This comprehensive coverage is specifically for work performed at an authorized Toyota dealer and is subject to the terms and conditions outlined in the New Vehicle Limited Warranty Section of the Owner's Warranty Information booklet. If the condition is verified, the repair will be performed free of charge.

Important Warnings for Owners

Toyota will begin notifying owners via first-class mail starting in early December 2024, with mailings continuing over several months. Owners should be aware of the following key points:

• Condition Requirement: This Customer Support Program only applies to vehicles that have exhibited the condition described. If an owner has not experienced the coolant leak or related symptoms, the repair will not be performed proactively. Owners who have not experienced the condition are asked to tear off a sheet from the owner letter and insert it into their Owner's Warranty Information Booklet for future reference.
• Salvage Vehicle Eligibility: Vehicles branded as salvage, total loss, or with unknown mileage ARE ELIGIBLE for coverage under this emission-related Customer Support Program. This is an important distinction for owners of such vehicles.
• Diagnostic Fees: If a diagnosis is performed and your vehicle's condition is not covered by this Customer Support Program, you may be responsible for the initial diagnostic fees and any other repairs you decide to have performed.

Repair Procedure Summary

If a flow shut-off valve coolant leak is confirmed, the repair involves replacing the affected valve or hose assembly. Technical instructions for this repair are detailed in Toyota Service Bulletin (TSB) 24-TMS-0044-T. The estimated time for this repair is approximately 2 hours, though actual time may vary based on dealer scheduling.

The specific repair operation codes and flat rate hours are:

Op Code	Description	Model	Flat Rate Hours
24TE04R1	Replace Water Valve	Corolla & Corolla HB	1.4
24TE04R2	Replace Water By-pass Hose	RAV4	1.4
24TE04R3	Replace Water By-pass Hose	Avalon HV, Camry, Camry HV, Highlander, RAV4 HV, RAV4 PHV, Sienna HV, Venza	1.5

Required Parts for Repair

The specific parts that may be replaced under this program include the Water Valve or Hose Assy, Water By-pass. The part numbers associated with these repairs vary by model:

• 16260-F0300: HOSE ASSY, WATER BY-PASS, used for Camry (2018-2021), RAV4 (2019-2021), Avalon HV (2019-2021), and Camry HV (2018-2021).
• 16260-F0310: HOSE ASSY, WATER BY-PASS, used for RAV4 HV (2019-2021), RAV4 PHV (2021), and Venza HV (2021).
• 16260-F0330: HOSE ASSY, WATER BY-PASS, used for Highlander HV (2020-2021) and Sienna HV (2021).
• 16671-F2030: VALVE, WATER, used for Corolla (2020-2021) and Corolla HB (2019-2021).
• 16260-F0340: HOSE ASSY, WATER BY-PASS, specifically for Highlander HV* (2020-2021) and Sienna HV* (2021) models designated for Mexico.

Guidance for Dealers and Technicians

Dealers are explicitly instructed DO NOT ORDER FOR STOCK for related repair parts. Parts should only be ordered for vehicles actively experiencing this condition after a proper diagnosis. This helps manage inventory and ensures parts are available for affected vehicles.

For California dealers, this Customer Support Program includes emission-related parts. After repairs are completed, an Authorized Modification Label, material number 00451-00001-LBL, must be affixed to the vehicle under the hood. This label confirms the emission-related modifications have been performed.

All dealership technicians performing this repair are required to complete the most current version of the E-Learning course "Safety Recall and Service Campaign Essentials" and the specific course "TIC-201A - Engine Repair." Toyota emphasizes that claims for repairs performed by non-qualified technicians are subject to debit, highlighting the importance of proper training.

Parts Recovery and Claim Filing

All parts replaced as part of this Customer Support Program must be retained by the parts department until notification is received via the Parts Recovery System (PRS) for disposition. These parts are crucial for defect analysis, quality control, and product evaluation by Toyota.

Dealers are advised to file campaign claims accurately and promptly. Incorrect claims or claims for incorrect VINs should be corrected by referring to Warranty Procedure Bulletin PRO17-03. This ensures proper government reporting and timely processing.

Owner Reimbursement for Previous Repairs

If you have previously paid for repairs related to the flow shut-off valve coolant leak, instructions for seeking reimbursement will be included in the owner notification letter. For vehicles still under the New Vehicle Limited Warranty, the repair should be submitted as a Regular warranty claim.

Contacting Toyota

For additional questions or concerns regarding this program or your Toyota Camry coolant leak, owners can contact the Toyota Brand Engagement Center at 1-800-331-4331. Representatives are available Monday through Friday, 8:00 AM to 8:00 PM Eastern Time, and Saturday, 9:00 AM to 7:00 PM Eastern Time.

Source: NHTSA Manufacturer Communication 11012734