NHTSA Campaign 25V859000
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
NHTSA campaign 25V859000 covers 5 year-make-model versions listed here and concerns the service brakes, hydraulic: foundation components: master cylinder. The repair is free.
Honda (American Honda Motor Co.) filed the report for 25V859000 with NHTSA on December 11, 2025; NHTSA's Office of Defects Investigation influenced the recall.
For 25V859000, NHTSA lists up to 70,658 potentially affected vehicles.
Owner notification letters for 25V859000 were scheduled from May 1, 2026, 141 days after the report.
25V859000 covers 1 model from Acura, model years 2016–2020.
Owners of the model years 25V859000 covers have filed at least 11 complaints naming the service brakes, hydraulic, about this defect or others in the same group.
Among the 25V859000 vehicles, the 2016 Acura ILX has the most (5).
By potentially affected vehicles, 25V859000 ranks 85 of 232 Honda (American Honda Motor Co.) recalls on this site.
Besides 25V859000, Honda (American Honda Motor Co.) has 11 other recalls on the service brakes, hydraulic on this site; the one before 25V859000 was 25V391000, reported on June 12, 2025.
What this recall covers
- The 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.
- The risk
- Reduced brake function can extend the distance required to stop, increasing the risk of a crash or injury.
- The fix
- 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.
Reported December 11, 2025
Vehicles covered by 25V859000 (5)
Being on this list means your year, make and model fall inside campaign 25V859000, not that your own vehicle does: a campaign covers a range of VINs. A VIN check on NHTSA's lookup shows whether it is.
Newest record on this page: December 11, 2025. Data: NHTSA recall and owner-complaint files. How these figures are counted