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

What is the Toyota Flow Shut-off Valve Coolant Leak?

Toyota has initiated Customer Support Program (CSP) 24TE04 to address a specific condition involving a small engine coolant leak. This leak originates from the Toyota Flow Shut-off Valve, allowing coolant to drip onto other vehicle components. This concern can lead to an "Engine Maintenance Required" message appearing on the instrument cluster or cause the air conditioning system to malfunction.

This program aims to ensure customer satisfaction by providing coverage for repairs related to the Toyota Flow Shut-off Valve coolant leak. Approximately 2,384,700 vehicles are covered under this program, with about 17,000 distributed to Puerto Rico.

Symptoms of a Flow Shut-off Valve Coolant Leak

Owners might notice specific indicators if their vehicle is affected by this coolant leak. The most common symptoms include:

• An "Engine Maintenance Required" warning appearing on the vehicle's instrument cluster.
• The vehicle's air conditioning system not functioning normally or at all.

If these symptoms are observed and confirmed to be due to the flow shut-off valve coolant leak, the vehicle will be repaired under the terms of this Customer Support Program.

Customer Support Program 24TE04 Coverage Details

Toyota is offering extended warranty coverage for the Toyota Flow Shut-off Valve coolant leak under CSP 24TE04. This program includes two tiers of coverage:

• Primary Coverage: This will be offered until November 30, 2025, without any mileage limitation.
• Secondary Coverage: This applies for 10 years from the vehicle's date of first use or 100,000 miles, whichever occurs first.

All repairs under this program must be performed at an authorized Toyota dealer. The coverage is subject to the terms and conditions outlined in the New Vehicle Limited Warranty Section of the Owner's Warranty Information booklet, excluding damage from abuse, accidents, theft, or vandalism.

Important Warnings and Information

Owners and dealers should be aware of several key points regarding this Customer Support Program:

• Dealer Parts Ordering: Dealers are explicitly instructed, "DO NOT ORDER FOR STOCK." Parts should only be ordered for vehicles that are confirmed to be experiencing the condition and require repair. Dealers should not increase their stock of related repair parts.
• Salvage Title Vehicles: This CSP is emission-related, meaning that vehicles branded as salvage, total loss, or with true mileage unknown are "ARE ELIGIBLE for coverage" under this program.
• Technician Qualification: Claims for repairs performed by non-qualified technicians are subject to debit. All dealership technicians performing this repair are required to successfully complete the most current version of the E-Learning course "Safety Recall and Service Campaign Essentials" and the specific course "TIC-201A - Engine Repair." Dealerships must ensure technicians are certified by checking https://www.uotdealerreports.com.
• California Emissions Repair: For vehicles in California, an Authorized Modification Label (material number 00451-00001-LBL) must be affixed under the hood after repairs are completed, indicating the modifications made.
• Customer Marketing: Direct marketing of this Customer Support Program is strictly prohibited per Toyota Warranty Policy 5.22, "Warranty Solicitation."
• Media Contacts: All media inquiries must be directed to the Toyota Newsroom at https://pressroom.toyota.com/.

Repair Procedure and Parts

If a vehicle is diagnosed with a Toyota Flow Shut-off Valve coolant leak under this program, the repair involves replacing the faulty component. Depending on the specific model, this could be either the Water Valve or the Hose Assy, Water-Bypass.

Technical instructions for this Customer Support Program can be found in TSB# T-SB-0112-24. The repair process is estimated to take approximately 2 hours, though actual time may vary based on the dealer's schedule.

Required Parts

The following part numbers are associated with the repair of the flow shut-off valve coolant leak:

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

Warranty and Reimbursement

For vehicles still under the New Vehicle Limited Warranty, repairs should be submitted as a Regular warranty claim. For all other eligible vehicles under CSP 24TE04, the following operation codes and flat rates apply:

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

All replaced parts must be retained by the parts department until notified by the Parts Recovery System (PRS) for disposition. This process supports defect analysis, quality control, and product evaluation. Dealers should file claims accurately and promptly to minimize storage challenges.

If you have previously paid for repairs related to this condition, instructions for reimbursement consideration will be provided in the owner notification letter. For claim filing accuracy or correction requests, refer to Warranty Procedure Bulletin PRO17-03.

What Owners Should Do

Toyota will begin notifying owners by first-class mail starting in late December 2024, with letters being sent over several months. If you experience symptoms such as an "Engine Maintenance Required" message or A/C malfunction, and suspect a Toyota Flow Shut-off Valve coolant leak, you should:

1. Contact your local authorized Toyota dealership: They will diagnose the condition.
2. Diagnosis and Repair: If the condition is verified and falls within the program's terms, the repair will be performed free of charge.
3. Reimbursement: If you have previously paid for repairs related to this condition, instructions for reimbursement consideration will be provided in the owner notification letter.

For additional questions or concerns, you can contact the Toyota Brand Engagement Center at 1-800-331-4331, Monday through Friday from 8:00 AM to 8:00 PM ET, and Saturday from 9:00 AM to 7:00 PM ET.

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Source: NHTSA ID: 11012749