2024 BMW 7 Series / iX Creaking Brake Pedal Noise TSB

Symptoms of a Creaking Brake Pedal

Owners of certain 2024 BMW 7 Series and iX models may notice a distinct creaking noise emanating from the brake pedal area. This sound typically occurs when the brake pedal is either pressed or released. The noise is associated with the Integrated Brake System (IB) and can be present even when the vehicle is stationary and the engine is running. If you hear a "creaking noise may be heard from the pedal area for the Integrated Brake System (IB)", this service bulletin applies to your vehicle.

Cause of the Noise

BMW has identified the root cause of this creaking noise as an unfavorable tolerance in the connection between the pedal mechanism and the Integrated Brake System (IB). This slight manufacturing variation can lead to friction and the resulting audible creaking sound during brake pedal operation. The issue is documented under defect code 3521900100, labeled as "G70 I20 Groaning noise from pedal mechanism area" for affected models.

Repair Procedure Summary

BMW Service Information Bulletin SIB 35 01 23 outlines a specific adjustment to correct the creaking brake pedal noise. The repair involves a precise adjustment of the IB piston rod. Technicians will first remove the trim panel covering the pedal assembly. Next, the piston rod will be marked to establish a starting point. Using channel lock pliers with protected jaws, the piston rod will then be carefully rotated 90 degrees clockwise. After the adjustment, the technician will verify if the creaking noise from the BMW i7 creaking brake pedal is resolved. If the noise persists, further diagnosis via a TSARA case submission with a video file of the noise is required.

Important Warnings

During the adjustment procedure for the Integrated Brake System (IB) piston rod, it is critical that technicians use protected jaws on their channel lock pliers. This is to prevent any damage to the piston rod, which could lead to further issues.

Claim Information

This repair for the creaking brake pedal noise is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Dealers can claim the repair using defect code 3521900100. Applicable labor operations include 00 77 162 for main work or 00 77 724 for plusposition work, and optional operations like 35 99 000 for verifying the noise or 00 58 500 for diagnosis worktime. For detailed claiming procedures, technicians should refer to SI B01 01 20 or SI B01 07 20. A supporting video, V35 01 23, is also available for reference.

What Owners Should Do

If your 2024 BMW 7 Series, i7, or iX is experiencing a creaking noise from the brake pedal area, you should schedule an appointment with your authorized BMW dealer. Inform them about the "BMW i7 creaking brake pedal" issue and mention Service Information Bulletin SIB 35 01 23. The dealer will perform the necessary inspection and adjustment under warranty to resolve the noise.

NHTSA ID: 11013115