2023-2024 BMW iX Coolant Changeover Valve Delivery Stop

BMW has issued Service Information Bulletin (SIB) SIB 64 03 24 as a delivery stop for certain 2023-2024 BMW iX vehicles. This measure ensures that all affected vehicles are inspected and repaired before customer delivery. The core issue revolves around the BMW iX coolant changeover valve, which may not maintain its sealing capacity under specific conditions.

This bulletin, SIB 64 03 24, is a revision (Revision 2, dated May 22, 2024) that updates previous information, including claim details and the customer letter. It supersedes the earlier SI B64 03 24 dated January 2024 and is itself replaced by B64 07 24 Delivery Stop: Replace Coolant Changeover Valve – I20.

Why This Matters

The delivery stop is a proactive measure to address a potential defect in the BMW iX coolant changeover valve. An impaired valve could lead to a small coolant leakage, particularly when outside temperatures drop below 19 degrees Fahrenheit (-7 degrees Celsius) and the vehicle has been exposed to very cold conditions for an extended period, such as overnight parking outside a garage. While typically a minor leak, it's crucial to address to prevent potential long-term issues with the vehicle's cooling system.

What's Being Addressed

The specific component under scrutiny is the coolant changeover valve in the E-Series i20, known as the iX Sports Activity Vehicle (Battery Electric Vehicle). BMW's quality checks identified that the sealing capacity of some of these valves might be compromised. This issue primarily affects vehicles produced between March 10, 2023, and January 12, 2024.

Symptoms of a Faulty Coolant Changeover Valve

If a coolant leakage occurs, owners of the affected 2023-2024 BMW iX will likely receive a specific Check Control message in their vehicle's display. The verbatim message is: "Drive. It is possible to continue driving. Must be checked by the Service Partner." This message indicates that while the vehicle can still be driven, it requires immediate attention from a service professional to diagnose and rectify the issue. Owners might also visually notice a small coolant leakage.

Manufacturer's Remedy

For any 2023-2024 BMW iX vehicle experiencing a sealing capacity issue or coolant leakage, the authorized BMW Center will replace the coolant changeover valve at no charge. This repair is covered under the BMW New Vehicle Limited Warranty. For vehicles that have not yet shown any signs of leakage, a check will be performed during the first regular service visit to determine if any corrective measures are needed.

Important Warnings for Owners

BMW has implemented this as a delivery stop, meaning vehicles cannot be delivered to customers until this campaign is completed. If you own a 2023-2024 BMW iX, your vehicle's status will show as "Open" in dealer systems if it requires this campaign. BMW is notifying consumers via a customer information letter (B640324 Customer Information Letter.pdf) regarding this issue.

Owner Action

If you experience a coolant leakage or see the Check Control message "Drive. It is possible to continue driving. Must be checked by the Service Partner." in your 2023-2024 BMW iX, you should contact an authorized BMW Center immediately to schedule a service appointment. The replacement of the BMW iX coolant changeover valve will be performed at no cost to you.

NHTSA ID: 11000511