2010 MAZDA MAZDA3 — Problems, Recalls & Safety Data

NHTSA Complaint Narrative I am filing this complaint regarding a 2010 Mazda 3, VIN [XXX] . The vehicle experiences intermittent transmission control failures, including difficulty shifting out of first gear and warning indicators triggered by vibration. The transmission and transmission control module have already been replaced. The dealership has identified the wiring harness as the cause of the remaining failure. Mazda North American Operations has confirmed that the required wiring harness (BBM9-67-020H) is discontinued and unavailable. However, Mazda has not provided a written determination of whether the known wiring harness recall (engine wiring harness chafing affecting control systems) applies to this VIN, nor confirmed recall completion history. Mazda has advised the customer to seek aftermarket or salvage parts, but has not provided an approved repair remedy or goodwill assistance despite the issue affecting drivability and safety. I am requesting that NHTSA review whether Mazda has met its obligations regarding: 1.recall applicability determination by VIN, and 2.providing an adequate remedy when OEM repair parts are no longer available for a safety-related defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA Complaint Narrative I am filing this complaint regarding a 2010 Mazda 3, VIN [XXX] . The vehicle experiences intermittent transmission control failures, including difficulty shifting out of first gear and warning indicators triggered by vibration. The transmission and transmission control module have already been replaced. The dealership has identified the wiring harness as the cause of the remaining failure. Mazda North American Operations has confirmed that the required wiring harness (BBM9-67-020H) is discontinued and unavailable. However, Mazda has not provided a written determination of whether the known wiring harness recall (engine wiring harness chafing affecting control systems) applies to this VIN, nor confirmed recall completion history. Mazda has advised the customer to seek aftermarket or salvage parts, but has not provided an approved repair remedy or goodwill assistance despite the issue affecting drivability and safety. I am requesting that NHTSA review whether Mazda has met its obligations regarding: 1.recall applicability determination by VIN, and 2.providing an adequate remedy when OEM repair parts are no longer available for a safety-related defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

See attached document for complaint.

See attached document for complaint.

On August 15, 2025, my 2010 Mazda 3 began displaying the ABS warning light intermittently while driving. The ABS system is a critical safety feature, and when the light comes on, I am unsure if the braking system will function properly in an emergency. I scanned the vehicle using a Foxwell diagnostic tool and retrieved the following ABS-related fault codes: C0020:1C-2B – ABS Pump Motor Control Circuit U0425:62-60 – Invalid Data Received from IPC/ABS Control Module U0140:00-28 – Lost Communication with Body Control Module These issues are consistent with Mazda Technical Service Bulletin 04-002/13 (July 17, 2013), which documents ABS pump motor failures caused by poor motor brush contact. This is a serious safety concern because the ABS system fails without warning, leaving the driver and passengers at risk of brake loss in critical conditions. Why this should be investigated: The defect occurs intermittently, making it difficult to predict or reproduce. It matches a known documented defect acknowledged by Mazda in TSB 04-002/13. Other owners have reported similar ABS pump failures in Mazda vehicles of this generation. The failure compromises safe braking and should be treated as a safety defect warranting investigation and possible recall. Action Requested: I am requesting that NHTSA investigate this recurring ABS pump/motor failure in 2010 Mazda 3 vehicles and determine whether a recall should be issued to address this known defect.