2023-2024 BMW iX Coolant Changeover Valve Leak SIB 64 07 24

BMW has released Service Information Bulletin (SIB) 64 07 24, a Delivery Stop, for specific 2023-2024 BMW iX Sports Activity Vehicles. This bulletin, which is Revision 1 and supersedes an earlier version dated May 2024, addresses a potential issue with the coolant changeover valve.

The SIB 64 07 24 indicates that vehicles produced between March 16, 2023, and January 12, 2024, are affected. Quality checks revealed that the coolant changeover valve could develop a leak when exposed to temperatures significantly below 32° F (0° C).

Symptoms of a BMW iX Coolant Leak

The primary symptom of this issue is a potential coolant leak from the changeover valve. This leak is specifically noted to occur under very low outside temperatures, below 32° F (0° C). While the bulletin does not specify direct owner-facing warning messages, a coolant leak can lead to reduced cooling system efficiency and, if left unaddressed, potential damage to vehicle components.

Important Warnings

BMW has issued a critical Delivery Stop for affected vehicles. This means that certain vehicles cannot be sold or delivered until the necessary repair is completed. The bulletin explicitly states:

"Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to a Delivery Stop, until the vehicle is repaired. Do not use or sell replacement equipment/parts subject to a Delivery Stop."

This highlights the importance of addressing the BMW iX coolant leak promptly to ensure vehicle safety and proper operation.

Repair Procedure Summary

The correction for this issue involves replacing both coolant changeover valves. Technicians are instructed to follow specific repair instructions, 64 12 790 and 17 61 625, which detail the process for replacing the coolant changeover valve, including valve 2 for the high-voltage battery system. The repair code associated with this action is 0064290200, labeled as "i20 Replace coolant changeover valve."

Required Tools or Parts

To perform the repair for the BMW iX coolant leak, the following parts are specified:

• 64 11 9 462 114: Changeover valve (Quantity: 2)
• 07 11 9 906 123: Hexagon screw with washer (Quantity: 2)
• 31 11 6 899 302: Multi-purpose bolt (Quantity: 14)
• 61 27 9 487 465: Screw (Quantity: 1)
• 83 19 5A32851: HT-12 Antifreeze RTU (DN = 1/10 Liter) (As needed)
• 83 19 2468442: BMW Antifreeze/Coolant (DN = 1 Gallon Concentrate) - HT-12 (As needed)

Additional materials and small parts, such as fluids, lubricants, one-time use screws, nuts, and seals, may be required as per ISTA repair instructions or the Electronic Parts Catalog.

Owner Action

If you own a 2023 or 2024 BMW iX, especially one produced between March 16, 2023, and January 12, 2024, it is important to check if your vehicle is affected by this Delivery Stop. You can do this by contacting your authorized BMW dealer. They can check your vehicle's status in systems like AIR, AWP, Campaign Summary, or Warranty Vehicle Inquiry. Vehicles requiring this campaign will show it as "Open."

This repair is covered under warranty. The bulletin also mentions that this action qualifies for Alternative Mobility Solution (AMS) expense reimbursement for vehicle owners, with reference to SI B01 29 16 for additional information.

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Source: NHTSA ID: 11000514