NHTSA Recall 25V859000: Master cylinder (service brakes)
Honda (American Honda Motor Co.) reported this safety recall to NHTSA on , covering an estimated 70,658 vehicles. It affects 2016–2020 Acura ILX.
| NHTSA campaign | 25V859000 |
|---|---|
| Manufacturer campaign | RN5 |
| Component | SERVICE BRAKES, HYDRAULIC › FOUNDATION COMPONENTS › MASTER CYLINDER |
| Report received | December 11, 2025 |
| Owner notification | May 1, 2026 |
| Initiated by | NHTSA Office of Defects Investigation |
Defect
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.
Safety risk
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 covered by recall 25V859000
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.