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2016-2020 Acura Ilx recall: master cylinder

Honda (American Honda Motor Co.) reported this safety recall on December 11, 2025. It covers about 70,658 vehicles.

vehicles affected
70,658
reported
Dec 11, 2025
owners notified
May 1, 2026
related complaints
38

Service brakes, hydraulic: foundation components: master cylinder

What is 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.
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 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 the federal safety agency. 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.

Recall number 25V859000

Affected vehicles

Owner complaints about the same problem

Owners of these vehicles have filed 38 complaints about brakes problems.

2017 Acura Ilx2018 Acura Ilx2019 Acura Ilx2020 Acura Ilx

Questions about recall 25V859000

Is there a recall on the 2016-2020 Acura Ilx master cylinder?

Yes. Recall 25V859000, reported on December 11, 2025, covers about 70,658 vehicles.

What is the fix for recall 25V859000?

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 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 the federal safety agency. 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.

Is the recall repair free?

Safety recall repairs are done free of charge at authorized dealers. A dealer can confirm with the VIN whether a specific vehicle is included and whether the repair has already been done.

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