June 29, 2023 NHTSA CAMPAIGN NUMBER: 23V458000
Loose Fastener on Brake Booster Assembly
Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.
NHTSA Campaign Number: 23V458
Manufacturer Honda
(American Honda Motor Co.)
Components SERVICE BRAKES, HYDRAULIC
Potential Number of Units Affected 124,077
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.
Remedy
Dealers will inspect and repair the brake booster assembly as necessary, free of charge. Owner notification letters are expected to be 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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Check if your Honda has a Recall
Chronology :
December 2020
Honda manufacturing found a missing nut missing from the brake booster assembly tie rods and notified the component part supplier, VBS. VBS implemented countermeasures to prevent a reoccurrence. No outflow from the occurrence was found.
December 1, 2022
Honda received a quality report on brake failure in a 2021 Pilot. No crash was reported in the incident. Honda began to investigate the issue.
May 24, 2023
VBS submitted Part 573 Defect Information Report # 23E-040 to the NHTSA.
May 31, 2023
VBS provided the serial numbers of the suspected parts involved in their recall. Honda continued to investigate the issue.
June 12, 2023
Honda investigated the potentially affected population of vehicles.
June 22, 2023
Honda determined that a defect related to motor vehicle safety and FMVSS noncompliance existed and decided to conduct a safety and noncompliance recall.
As of June 22, 2023, Honda has received two warranty claims related to the issue between September 2022 to June 2023, and no reports of crashes, injuries or deaths related to this issue.
12 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| ACURA | MDX | 2020 |
| HONDA | CIVIC | 2020-2021 |
| HONDA | PASSPORT | 2021-2023 |
| HONDA | PILOT | 2021-2022 |
| HONDA | RIDGELINE | 2020-2023 |
2 Associated Documents
Defect Notice 573 Report
RCLRPT-23V458-1736.PDF 217.08KB
Recall Acknowledgement
RCAK-23V458-8185.pdf 738.222KB
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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-458 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Honda (American Honda Motor Co.) Submission Date : JUN 29, 2023 NHTSA Recall No. : 23V-458 Manufacturer Recall No. : VEU, AEV, ZET Manufacturer Information : Manufacturer Name : Honda (American Honda Motor Co.) Address : 1919 Torrance Blvd. Torrance CA 90501 Company phone : 1-888-234-2138 Population : Number of potentially involved : 124,077 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2020-2021 Honda Civic Vehicle Type : LIGHT VEHICLES Body Style : 4-DOOR Power Train : GAS Descriptive Information : The recall population was determined based on supplier and manufacturing records. The production range reflects all possible vehicles that could experience the problem. Production Dates : OCT 05, 2020 – MAY 13, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2020-2023 Honda Ridgeline Vehicle Type : LIGHT VEHICLES Body Style : PICKUP TRUCK Power Train : GAS Descriptive Information : The recall population was determined based on supplier and manufacturing records. The production range reflects all possible vehicles that could experience the problem. Production Dates : OCT 08, 2020 – MAR 21, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 3 : 2021-2023 Honda Passport Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : The recall population was determined based on supplier and manufacturing records. The production range reflects all possible vehicles that could experience the problem. Production Dates : OCT 08, 2020 – FEB 22, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-458 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 4 : 2021-2022 Honda Pilot Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : The recall population was determined based on supplier and manufacturing records. The production range reflects all possible vehicles that could experience the problem. Production Dates : OCT 06, 2020 – NOV 30, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2020-2020 Acura MDX Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : The recall population was determined based on supplier and manufacturing records. The production range reflects all possible vehicles that could experience the problem. Production Dates : OCT 09, 2020 – DEC 20, 2020 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The brake master cylinder may have been improperly fastened to the brake booster assembly during production, resulting in loose or missing tie rod nuts. During application of the brake pedal, a bending load may occur upon the brake booster assembly tie rod studs. As a result, the tie rod studs may break, leading to the brake master cylinder separating from the brake booster assembly and a failure to comply with Federal Motor Vehicle Safety Standards (FMVSS) 135 – Light vehicle brake systems. FMVSS 1 : 135 – Light vehicle brake systems FMVSS 2 : NR Description of the Safety Risk : If the brake master cylinder separates from the brake booster assembly, the driver may experience diminished, or loss of, brake function, increasing the risk of a crash or injury. Description of the Cause : The brake master cylinder was improperly fastened to the brake booster assembly during production. Identification of Any Warning that can Occur : Honda does not believe a warning can occur for the tie rod breakage. Involved Components : Part 573 Safety Recall Report 23V-458 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : MASTER CYLINDER ASSY (CVT) Component Description : MASTER CYLINDER ASSY (CVT) Component Part Number : 46100-TBA-A01 Component Name 2 : MASTER CYLINDER ASSY (MT) Component Description : MASTER CYLINDER ASSY (MT) Component Part Number : 46100-TBA-A11 Component Name 3 : MASTER CYLINDER ASSY Component Description : MASTER CYLINDER ASSY Component Part Number : 46100-TP6-A12 Component Name 4 : MASTER POWER (10”) SET Component Description : MASTER POWER (10”) SET Component Part Number : 01469-TBA-A00 Component Name 5 : MASTER POWER (10”) SET Component Description : MASTER POWER (10”) SET Component Part Number : 01469-TBF-A00 Component Name 6 : MASTER POWER 10.5” SET Component Description : MASTER POWER 10.5” SET Component Part Number : 01469-TG7-A50 Component Name 7 : MASTER POWER 10.5” SET Component Description : MASTER POWER 10.5” SET Component Part Number : 01469-TGS-A00 Part 573 Safety Recall Report 23V-458 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 8 : MASTER POWER 10.5” SET Component Description : MASTER POWER 10.5” SET Component Part Number : 01469-TZ5-A10 Supplier Identification : Component Manufacturer Name : Veoneer Brake Systems (VBS) Address : 2001 Industrial Drive Findlay Ohio 45840 Country : United States Chronology : December 2020 Honda manufacturing found a missing nut missing from the brake booster assembly tie rods and notified the component part supplier, VBS. VBS implemented countermeasures to prevent a reoccurrence. No outflow from the occurrence was found. December 1, 2022 Honda received a quality report on brake failure in a 2021 Pilot. No crash was reported in the incident. Honda began to investigate the issue. May 24, 2023 VBS submitted Part 573 Defect Information Report # 23E-040 to the NHTSA. May 31, 2023 VBS provided the serial numbers of the suspected parts involved in their recall. Honda continued to investigate the issue. June 12, 2023 Honda investigated the potentially affected population of vehicles. June 22, 2023 Honda determined that a defect related to motor vehicle safety and FMVSS noncompliance existed and decided to conduct a safety and noncompliance recall. As of June 22, 2023, Honda has received two warranty claims related to the issue between September 2022 to June 2023, and no reports of crashes, injuries or deaths related to this issue. Part 573 Safety Recall Report 23V-458 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Registered owners of all affected vehicles will be contacted by mail and asked to take their vehicle to an authorized Honda or Acura dealer. The dealer will inspect and replace the missing nuts and damaged brake booster assembly components, if necessary. Owners who have paid to have these repairs completed at their own expense may be eligible for reimbursement, in accord with the recall reimbursement plan on file with NHTSA. How Remedy Component Differs from Recalled Component : Recalled components contain improperly fastened brake master cylinder tie rod nuts. Identify How/When Recall Condition was Corrected in Production : The supplier has improved the production and inspection process of the component part. Recall Schedule : Description of Recall Schedule : Dealer notification is scheduled to being and end on or about 6/30/2023. Owner notification is scheduled to begin and end on or about 8/07/2023. Planned Dealer Notification Date : JUN 30, 2023 – JUN 30, 2023 Planned Owner Notification Date : AUG 07, 2023 – AUG 07, 2023 * NR – Not Reported
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