2024 BMW i4 Instrument Panel Vibration Noise TSB

BMW has released Technical Service Bulletin (TSB) SIB 64 02 25 to address an intermittent vibrating noise that owners of certain 2024 BMW i4 vehicles may experience. This noise typically originates from within the instrument panel when the air conditioning (AC) system is active.

The TSB provides a detailed diagnostic and repair procedure for technicians to resolve this specific 2024 BMW i4 instrument panel vibration issue, ensuring a quieter cabin experience for drivers and passengers.

Symptoms

Owners may notice a distinct "vibrating noise heard from within the instrument panel" when the AC system is turned on. This noise is often intermittent, meaning it may not occur constantly. Technicians might also be able to hear the noise more clearly from outside the vehicle with the hood open.

Cause of the Vibration Noise

BMW has identified the root cause of the 2024 BMW i4 instrument panel vibration as movement between two specific components of the AC system. This includes the Air Conditioning Refrigerant line, which is a dual line with part number 64 50 9 474 791, and its associated bracket, identified as the suction pipe air conditioner with part number 64 50 9 874 025. The movement between these parts generates the unwanted noise. A diagram (64_2792: Coolant lines - Graphic) is provided to technicians, illustrating these components and their interaction.

Repair Procedure Summary

The repair outlined in TSB SIB 64 02 25 involves a two-step approach to eliminate the vibrating noise:

1. Initial Check and Securing: Technicians must first ensure that the bracket for the suction pipe air conditioner (P/N 64 50 9 874 025) is fully and correctly clipped into place around the dual-wall AC line. Proper seating of this bracket can often resolve the issue.
2. Butyl Tape Application (if noise persists): If the vibrating noise continues after verifying the bracket's position, the technician will unclip the AC bracket. They will then apply butyl tape, specifically Terostat 81 (P/N 83 19 0 153 321), to the dual-wall AC line where it makes contact with the bracket. This tape acts as a dampener to prevent further movement and vibration. After applying the tape, the bracket is reinstalled around the dual-wall AC line.

Required Parts

For the repair, the following part may be required:

• Butyl tape Terostat 81 (15 x 1.5 mm x 10 m roll): Part Number 83 19 0 153 321. One 10-meter roll is sufficient to repair approximately 30 vehicles.

Claim Information and Warranty Coverage

This repair for the 2024 BMW i4 instrument panel vibration is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. The specific repair code for this issue is 6453003900, labeled as "Refrigerant line of Air conditioning Unpleasant noises."

Dealers will use specific labor operation codes for diagnosis and repair. These include 51 00 001 for verifying the noise source, 00 58 500 or 00 58 000 for diagnosis work time, and 64 99 000 for the job/repair time to install the butyl tape. Technicians are advised to refer to related bulletins SI B01 01 20 or B01 07 20 for detailed procedures on documenting and claiming work time.

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Source: NHTSA ID: 11014666, SIB 64 02 25