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Honda, Acura Models: Brake Master Cylinder May Separate

NHTSA campaign 23V458000 · Reported Jun 29, 2023 · Honda (American Honda Motor Co.)

high How serious is it? About this label

If the master cylinder separates, the brakes can stop working properly, increasing the risk of a crash. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	23V458000
Reported to NHTSA	Jun 29, 2023
Manufacturer	Honda (American Honda Motor Co.)
Part affected	Service Brakes, Hydraulic:foundation Components:master Cylinder
Vehicles covered	12 model/year combinations, model years 2020–2023
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

A fastener that connects the brake booster to the brake master cylinder may not have been put together correctly when the vehicle was built. Over time, this can cause the master cylinder to come apart from the booster assembly.

What you should do

1. Check your VIN at nhtsa.gov/recalls.
2. Contact a Honda or Acura dealer, or call Honda customer service at 1-888-234-2138.
3. The repair is free of charge.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 23V458000. More in how recalls work.

Affected vehicles (12)

2020 Acura MDX
2020 Honda Civic
2020 Honda Ridgeline
2021 Honda Civic
2021 Honda Passport
2021 Honda Pilot
2021 Honda Ridgeline
2022 Honda Passport
2022 Honda Pilot
2022 Honda Ridgeline
2023 Honda Passport
2023 Honda Ridgeline

Who to contact

Acura — official Acura recall lookup

Customer service: 1-888-234-2138

Honda — official Honda recall lookup

Customer service: 1-888-234-2138

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Acura Hydraulic Brake Recalls Involving Pressure Loss and Pedal Problems · all 6 Acura recalls in this area
Honda Hydraulic Brake Recalls Cover Leaks, Pedals, and Reduced Braking · all 5 Honda recalls in this area

Other Honda Pilot recalls

Jun 4, 2026Honda, Acura Rear Subframe May Corrode And Failhigh
May 21, 2026Honda and Acura front passenger airbags may deploy unintentionallyhigh
Jan 29, 2026Honda and Acura Driver Seats May Be Loosehigh
Jun 12, 2025Acura, Honda Brake Pedal Pin Can Shifthigh
Feb 5, 2025Honda Pilot third-row seat belt may not workhigh
Jan 23, 2025Acura MDX, TLX, Honda Pilot Engine May Stallhigh

All 26 Pilot recalls

Official notice

Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
Summary: Honda (American Honda Motor Co.) is recalling certain 2020-2021 Civic, 2020-2023 Ridgeline, 2021-2023 Passport, 2021-2022 Pilot, and 2020 Acura MDX vehicles. The tie rod fastener that connects the brake booster and the brake master cylinder may have been improperly assembled during manufacturing, which can cause the brake master cylinder to separate from the booster assembly.
Safety risk: Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.
Remedy: Dealers will inspect and repair the brake booster assembly as necessary, free of charge. Owner notification letters were mailed August 7, 2023. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are VEU, AEV, and ZET.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.