2025 BMW X3 Front Axle Click-Type Noise TSB SIB 31 02 26

Symptoms

Owners of the 2025 BMW X3 (G45 chassis) may experience a distinct "click"-type noise originating from the front axle area. This noise is typically noticeable when the vehicle encounters bumps, during both compression and rebound phases of the suspension. Technicians might also observe a relative movement of the inner core of the control arm rubber mount when it is under torsional load.

Cause

The underlying cause of the 2025 BMW X3 front axle click-type noise has been identified as play within the control arm rubber mount. This excessive play allows for unwanted movement in the component, leading to the audible clicking sound.

Important Warnings

Owners and technicians should be aware of specific guidance regarding this issue:

• Do not replace the tension strut: BMW explicitly states that "Replacement of the tension strut does not provide a remedy" for this particular "click"-type noise. Attempting to replace the tension strut will not resolve the issue.
• VIN-specific part numbers: When ordering replacement parts, it is crucial to use the vehicle's full VIN or chassis number. This ensures that the correct control arm with rubber bushing is selected from the Electronic Parts Catalog (ETK) or AIR system, as part specifications can vary based on the vehicle's specific equipment and options.

Repair Procedure Summary

BMW Technical Service Bulletin SIB 31 02 26 outlines the necessary steps to address the 2025 BMW X3 front axle click-type noise. The primary solution involves replacing the affected control arm(s).

1. Diagnosis: The initial step involves localizing the body complaint. Specific labor operations for diagnosis, such as 51 00 001* (Localizing body complaint(s)) or 00 58 500* (Diagnosis Worktime Flat Rate), are used. These are considered preliminary and not main labor operations. For documenting diagnosis time, technicians are referred to SI B01 01 20 or B01 07 20.
2. Control Arm Replacement: The core repair involves replacing the wishbone(s) (control arm(s)).
   • For one side: If only one control arm (left or right wishbone) requires replacement, labor operation 31 12 001 (Main work) or 31 12 552 (Plusposition work) should be used. The replacement procedure follows REP 31 12 001.
   • For both sides: If both left and right wishbones need replacement, labor operation 31 12 020 (Main work) or 31 12 558 (Plusposition work) is applicable.
3. Wheel Alignment Check and Adjustment: Following the replacement of the control arm(s), it is essential to perform a wheel alignment check and adjustment.
   • Labor operation 32 00 595 covers Kinematics Diagnosis System wheel alignment with ride height measurement (Plusposition).
   • Labor operation 32 00 601 addresses adjusting toe-in on the front axle (Associated work).
   • Further wheel alignment work, if needed, should refer to AIR Main Group 32 (Steering and wheel alignment / Electronic wheel alignment) using labor operation 32 00 6NN.

This bulletin specifically highlights that replacing the tension strut will not resolve the 2025 BMW X3 front axle click-type noise.

Required Parts

To rectify the 2025 BMW X3 front axle click-type noise, the following parts may be necessary:

• Control arm with rubber bushing, left: The specific part number must be identified by consulting ETK/AIR using the vehicle's VIN.
• Control arm with rubber bushing, right: The specific part number must be identified by consulting ETK/AIR using the vehicle's VIN.

Additionally, other materials such as fluids, lubricants, one-time use screws, nuts, and seals, which are not explicitly listed, must be sourced according to ISTA repair instructions or other approved BMW Group resources.

Claim Information

This repair, identified by Repair Code 3112013900, is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. The official description for this repair code is "Rubber/hydraulic mount, front axle wishbone, bottom (inner) Unpleasant noises."

Source: NHTSA ID 11027762.