2022-2025 BMW iX Electric Auxiliary Heater Service Action

Why This Matters

BMW has identified that some 2022-2025 BMW iX models, including the iX M60 and iX xDrive 50 Sports Activity Vehicle, may have been fitted with a faulty electric auxiliary heater. This component is crucial for the vehicle's interior heating system. A failure of the electric auxiliary heater could lead to a loss of cabin heating, impacting comfort and potentially visibility in cold weather conditions.

Symptoms

Owners of affected 2022-2025 BMW iX vehicles may experience a failure of the interior heating system. This means the cabin may not warm up effectively, or at all, when the heating is activated. There are no specific diagnostic trouble codes (DTCs) or warning lights explicitly mentioned in this bulletin for the faulty electric auxiliary heater, but a lack of interior heat is the primary indicator.

What's Being Repaired

BMW Service Action SIB 64 08 25 addresses the issue of a faulty electric auxiliary heater in the specified 2022-2025 BMW iX models. The correction involves replacing the defective electric auxiliary heater with a new, properly functioning unit. This service action ensures the restoration of proper interior heating functionality in your BMW iX electric auxiliary heater system.

Important Warnings for High-Voltage Systems

BMW emphasizes critical safety warnings for technicians performing this repair due to the high-voltage (HV) components involved. These warnings are vital for both technician safety and proper repair execution:

• "Only properly trained personnel, who passed all applicable HV Technical Training Courses, should perform repairs which require disconnecting, or removal of High Voltage battery components on any Hybrid or Electric Vehicle. Work performed on High Voltage systems by unqualified persons may result in severe injury or damage to the vehicle."
• "For Generation 5 Vehicles however, the specific vehicle training is required to diagnose, remove and service any HV component and it is NOT allowed for non HV certified technicians to work on the high voltage system."
• "Prior to disconnecting, or the removal of any HV component, the HV system needs to be disabled and secured (by means of the HV Service Disconnect Switch and lock out) by a properly trained HV technician, who has a minimum HV Qualification level after completing the Technical Training Course 'ST2324 High Voltage Drivetrain Systems' which as of 1/2023* includes ST1824 Alternative Drive Part 1."
• "High Voltage Battery removal and rework can ONLY be performed by a High-voltage Certified Technician with a HV Battery Certification level corresponding to a specific Electric or Hybrid vehicle."

Repair Procedure Summary

The repair procedure for the faulty BMW iX electric auxiliary heater involves following Repair Instruction 64 12 320, which details the steps to remove and install the electric auxiliary heater. After the new heater is installed, the cooling circuit must be bled after filling with new coolant. This process ensures the new heater operates correctly and the cooling system is free of air.

Required Parts and Materials

To complete the repair outlined in Service Action SIB 64 08 25, the following parts and materials are required:

• Electric instantaneous water heater: Part Number 64 12 5B683B8 (Quantity: 1)
• HT-12 Antifreeze RTU (Pre-mix): Part Number 83 19 5A32851 (As required)
• BMW Antifreeze/Coolant (1 Gallon Concentrate) - HT-12: Part Number 83 19 2468442 (As required)

Additional small parts, fluids, lubricants, one-time use screws, nuts, and seals may also be required, as specified in the Electronic Parts Catalog or other BMW Group resources.

Warranty and Claim Information

This service action, identified by Campaign Code 3104944833, is eligible for reimbursement via normal claim entry. The Repair Code for this service is 0064460200, described as "I20 Replacing interior electric auxiliary heater." Dealers will use specific labor operation codes for claiming the repair:

• Work Package #1 (Pre-delivery/Other Repair): Labor Operation 00 78 765, with a labor allowance of 18 FRU.
• Work Package #2 (Standalone Service Action): Labor Operation 00 78 218, with a labor allowance of 20 FRU.

Reimbursement for bulk supply materials (Sublet Code 4) is available up to $50.00. Additionally, this Service Action qualifies for Alternative Mobility Solution (AMS) expense reimbursement (Sublet Code 2), as detailed in SI B01 29 16.

What Owners Should Do

If you own a 2022-2025 BMW iX and suspect an issue with your interior heating, or if you want to confirm if your vehicle is affected by this service action, you should contact your authorized BMW dealer. While BMW is not explicitly notifying consumers for this service action, dealers can check your vehicle's status in their systems (AIR, AWP, Campaign Summary, or Warranty Vehicle Inquiry). The repair for the BMW iX electric auxiliary heater will be performed free of charge under this service action.

Source: NHTSA ID 11022361