NHTSA Campaign 25V859000

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Issued by Honda (American Honda Motor Co.) · Reported Dec 11, 2025 · 70,658 vehicles affected

What's wrong

Honda (American Honda Motor Co.) is recalling certain 2016-2020 Acura ILX vehicles. Contaminated brake fluid may cause a seal inside the brake master cylinder to deform, which can cause an internal brake fluid leak and reduce brake function.

Consequence

Reduced brake function can extend the distance required to stop, increasing the risk of a crash or injury.

Remedy

Dealers will replace the brake master cylinder, free of charge. Owner letters were mailed May 4, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's number for this recall is RN5. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning December 17, 2025. The information in your report suggests that Honda (American Honda Motor Co.) may have been aware of this issue more than five business days before filing a report with NHTSA. Please be reminded that under Federal law, this agency is to be notified of all safety defect and/or noncompliance decisions within five business days. 49 CFR 573.6 Significant civil penalties can be assessed for this violation.

Vehicles affected by this recall

Make Model Year Units
ACURA ILX 2016 70,658
ACURA ILX 2017 70,658
ACURA ILX 2018 70,658
ACURA ILX 2019 70,658
ACURA ILX 2020 70,658

Source: NHTSA Campaign 25V859000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.