2023-2024 BMW i4, i5, i7 Coolant Valve Leak Delivery Stop

BMW has issued Service Information Bulletin (SIB) 64 02 24, a Delivery Stop, for certain 2023-2024 BMW i4, i5, and i7 electric vehicles. This bulletin, which is Revision 2 and replaces the SI B64 02 24 dated January 2024, addresses a potential issue with the coolant changeover valve.

The BMW coolant changeover valve leak can occur under specific cold weather conditions. This article provides details on the affected vehicles, symptoms, and what owners should know about this Delivery Stop.

Why This Matters

The coolant changeover valve is a critical component in the vehicle's cooling system. If it develops a leak, especially in cold temperatures, it could lead to coolant loss. While the bulletin indicates that vehicles may still be driven, any coolant leak should be addressed promptly to prevent potential damage to the cooling system or other related components.

Symptoms and Trigger Conditions

Owners may notice a BMW coolant changeover valve leak under specific conditions. The primary symptom is a coolant leakage, which is most likely to occur when outside temperatures drop below 19°F (-7°C). This condition is typically met when the vehicle's operating systems have been exposed to these low temperatures for an extended period, such as being parked outside overnight.

If a coolant leak is detected, the vehicle's operating system is designed to notify the driver. You may receive a "Check Control message" in your vehicle's display. The message will state: "Drive. It is possible to continue driving. Must be checked by the Service Partner."

Important Warnings for Owners

BMW has issued this as a Delivery Stop, meaning new vehicles cannot be delivered until the situation is discussed with the customer and the required information letter is signed. For vehicles already in customer hands:

• If you receive a "Check Control message" or otherwise experience a coolant leakage issue, contact an authorized BMW Center immediately.
• The coolant valve replacement will be performed at no charge under your BMW New Vehicle Limited Warranty.
• For vehicles that do not currently show a sealing capacity or coolant leakage issue, your BMW Service Center will conduct a check during your first regular service visit to determine if any corrective measure is needed.

Dealer Procedure and Claim Information

For undelivered vehicles, the dealer is instructed to discuss the situation with the customer prior to delivery. The customer must sign an attached information letter, confirming they have been informed of the situation. This signed letter must then be enclosed with the sales contract.

The repair code associated with this action is 0064230200, which addresses the Gx Coolant changeover valve. Reimbursement for this action will be processed via normal claim entry using the work package information. The bulletin notes that the FRU (Flat Rate Unit) allowance for the special flat rate operation code is pending system update. Dealers should reference SIB B64 02 24 WP 1 in their technician's RO notes and claim comments for work package 0075797 (Customer information notification).

What to Do If Affected

If you own a 2023-2024 BMW i4, i5, or i7 and suspect a BMW coolant changeover valve leak, or if you see the "Check Control message" on your dashboard, contact your authorized BMW Center. Even if your vehicle is not currently showing symptoms, it will be inspected during your next regular service visit.

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Source: NHTSA ID: 10250367, SIB 64 02 24