What does BMW TSB SIB 17 01 24 address?

BMW TSB SIB 17 01 24 addresses coolant leaks from the changeover valve(s) in specific BMW BEV models, including the i4, i5, i7, and iX, which can lead to visible leaks, low heater output, and various fault codes.

What are the common fault codes associated with a BMW coolant leak at the changeover valve?

Common fault codes include 224163, 8049AA (Coolant level low or short circuit to ground or line disconnection), 80124F, 224F60, 224111 (Coolant loss detected), and 224107. These codes indicate issues with the electric auxiliary heater, coolant level sensor, or overall cooling system.

Is the repair for the 2023 BMW i4 coolant leak at changeover valve covered under warranty?

Yes, the repair described in SIB 17 01 24 is typically covered under the BMW New Vehicle Limited Warranty or the BMW Certified Pre-Owned Program, if applicable.

How can I tell if my BMW's changeover valve is faulty?

You might notice coolant leaking from under your car, experience low heater output, or see a "Drive, you can continue driving" (ID49) message. A BMW service center can diagnose the issue by checking for leaks and the production date of the changeover valves.

BMW i4 iX i7 Coolant Leak TSB SIB 17 01 24

BMW has released Service Information Bulletin (SIB) SIB 17 01 24 (Revision 2, dated February 11, 2025) to address concerns regarding coolant leaks from the changeover valve(s) in certain Battery Electric Vehicles (BEV). This bulletin specifically applies to the G26 i4 Gran Coupe, G60 i5 Sedan, G70 i7 Sedan, and i20 iX Sports Activity Vehicle models. This bulletin supersedes the previous SI B17 01 24 dated April 2024, with corrections made to labor operation claim information.

Symptoms

Owners of affected vehicles may notice several indicators of a 2023 BMW i4 coolant leak at changeover valve or similar issues in other models. These include:

Visible coolant leaking from under the car.
Reduced or low heater output.
A possible Check Control message displayed on the instrument cluster, stating: "Drive, you can continue driving" (ID49).

Fault Codes / DTCs

Technicians may find specific fault codes stored in the vehicle's diagnostic memory, pointing to issues related to the cooling system and electric auxiliary heater. These codes include:

Code	Description
224163	Electric auxiliary heater for the high-voltage battery unit: Undervoltage or internal communication fault
8049AA	Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection
80124F	Electric auxiliary heater: Communication in electric auxiliary heater faulty
224F60	Coolant level sensor, expansion tank: Coolant level low or short circuit to ground or line disconnection
224111	Cooling system for power electronics: Coolant loss detected
224107	Cooling system for high-voltage battery unit, component protection: Detection of coolant loss

Cause

The root cause of these symptoms and fault codes is leakage originating from one or more coolant changeover valves. Some models may have multiple changeover valves.

Diagnosis and Trigger Conditions

To diagnose the 2023 BMW i4 coolant leak at changeover valve or other affected models, technicians should inspect all changeover valves for signs of active coolant leakage or residual dried coolant from past leaks. It is crucial to check the production date of the changeover valves. Improved valves were manufactured on or after January 5, 2024 (production date 5.1.2024).

If a valve has a production date older than January 5, 2024, and shows signs of leakage, it should be replaced. If no leaks are found on any changeover valves, further diagnosis using BMW's ISTA diagnostic system and cooling system test equipment is recommended.

Repair Procedure Summary

The repair procedure outlined in SIB SIB 17 01 24 involves replacing the faulty coolant changeover valve(s). The number of changeover valves varies by model:

G26 (i4) and G70 (i7): 1 changeover valve.
G60 (i5): 3 changeover valves.
i20 (iX): 2 changeover valves.

Technicians will follow specific repair instructions based on the vehicle model. For G26 and G70 models, Repair Instruction 64 12 790 is referenced. For G60 models, Repair Instructions 64 12 790, 64 12 792, and 17 61 625 apply. For i20 models, Repair Instructions 64 12 792 and 17 61 625 are used.

After replacing the valve(s), a coolant system bleeding procedure must be performed using the ISTA path: Vehicle management/Service functions/Electric drive/Cooling/Fill and bleed the cooling system. Finally, a functional check of the electric auxiliary heater is required via the ISTA path: Body/Heating and air conditioning functions/Electric auxiliary heater/Heating and air conditioning functions: electric auxiliary heater.

Required Parts

To address the 2023 BMW i4 coolant leak at changeover valve and similar issues, the following parts may be required:

Changeover valve: Part Number 64 11 9462114 (Quantity: Up to 3, as applicable).
Electric instantaneous water heater: Refer to AIR/ETK for the correct part number (Quantity: 1, if necessary).
HT-12 Coolant: Part Number 83 19 2 468 442 (1 gallon concentrate) or 83 19 5 A32 851 (Bulk 1/10 Liter, pre-mix).

Important Warnings

BMW advises that this repair is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks, or the BMW Certified Pre-Owned Program, where applicable. Owners should be aware that the repair code for this issue is 6411900400.

Owner Action

If you experience any of the symptoms mentioned, such as a coolant leak, low heater output, or the