NHTSA Complaint #11705403 — 2016 ACURA MDX

This submission supplements my existing NHTSA complaint regarding Recall 17-010 and the 9-speed automatic transmission ATF warmer defect. My vehicle received Recall / Product Update 17-010 service on March 10, 2017, at which time the transmission was replaced. The final redesigned ATF warmer did not exist at that time. The ATF warmer installed with the replacement transmission was an earlier design. The vehicle returned for a second Recall 17-010 service visit on December 9, 2017. The service record from that visit explicitly states that the ATF warmer was not replaced, noting that it had been replaced during the prior visit. As a result, the recall was initiated but not completed with the final redesigned ATF warmer. Acura later issued TSB B17-026, extending warranty coverage to 10 years from original in-service date with unlimited mileage, because damage from ATF/coolant contamination may occur years after initial exposure, even if fluids later appear normal. In 2025, the vehicle developed transmission noise. An independent transmission specialist advised that the vehicle exhibits bearing failure, with the extent of damage unknown until teardown. Bearing failure is a known delayed consequence of ATF/coolant contamination associated with the ATF warmer defect. The vehicle was delivered to an authorized Acura dealership for evaluation under the warranty extension. However, the dealership has refused to perform the warranty inspection unless payment is made, and has stated that the vehicle is outside the warranty period, despite the warranty extension remaining in effect through January 2026. This supplement is submitted to document that: •Recall 17-010 was started but not completed with the final redesigned ATF warmer; •The final corrective part was never installed on this vehicle; and •Corrective action and inspection related to this incomplete recall and warranty extension are currently being denied.