Service Brakes, Hydraulic:foundation Components:master Cylinder

NHTSA recall 25V859000 · announced December 11, 2025 · filed by Honda (american Honda Motor Co.) · 70,658 units affected

The problem

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.

What to do

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 this recall

• 2016 Acura Ilx
• 2017 Acura Ilx
• 2018 Acura Ilx
• 2019 Acura Ilx
• 2020 Acura Ilx

Source: National Highway Traffic Safety Administration public recall data. This page reports official records and is not legal, medical, or repair advice.