2016–2020 Acura Ilx Recall: Contaminated brake fluid may cause a seal inside the brake master cylinder…
NHTSA campaign 25V859000 · Service Brakes, Hydraulic · filed Dec 11, 2025 · verified Jul 30, 2026
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — 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.
Affected vehicles
Related recalls
More Acura Ilx recalls
- 2016–2020 Acura Ilx and 20 other models — Fuel pump inside the fuel tank may fail
- 2019 Acura Ilx and 16 other models — Low-pressure fuel pump inside the fuel tank may fail
- 2013–2015 Acura Ilx and 3 other models — Drive shafts' protective coating may not have been applied…
- 2013 Acura Ilx and 9 other models — These vehicles are equipped with driver frontal air bag…
- 2016–2019 Acura Ilx — Excessive grease may prevent the set-ring on the half shaft…
Other campaigns involving Acura vehicles
Source: NHTSA recall database, campaign 25V859000 (manufacturer number RN5). Data last verified Jul 30, 2026.