- Vehicles
- 2,493
- Built between
- Jun 2022 – Sep 2023
- Models
- 1
- Recall type
- Equipment
- Initiated by
- NHTSA investigation
- Owners notified
- 9 April 2024
- Repaired
- 0%
- Unrepaired
- 2,492
Does this affect my vehicle?
This recall covers vehicles built between June 2022 and September 2023. If yours was built outside that window, it is not part of this recall.
- Haldex Inversion Relay ValveBuilt June 2022 to September 2023
Repair progress
2,492 of 2,493 vehicles in this recall had still not been repaired as of Q1 2026.
0% repaired — 1 of 2,493 reported
Manufacturers file these figures with NHTSA each quarter. Vehicles the manufacturer could not trace, or that have been scrapped or exported, are counted separately and are not included in the unrepaired figure.
What the defect is
ZF North America, Inc. (ZF) is recalling certain park brake actuation air brake systems equipped with Haldex inversion relay valves, part numbers 9718990020 and RKN28032. An internal piston in the inversion valve may fail, delaying the engagement of the parking brake. As such, these valves fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
What could happen
Delayed parking brake engagement can result in unintended vehicle movement, increasing the risk of a crash.
What gets fixed
ZF will replace aftermarket equipment, free of charge. Affected vehicle manufacturers will determine the appropriate remedy for their vehicles. Owner notification letters were mailed April 9, 2024.
Parts involved
- Inversion Relay Valve9718990020 and RKN28032
Part numbers are as filed by the manufacturer and are listed for reference. Your dealer will confirm the correct part for your vehicle.
Timeline
- Vehicles builtJune 2022 to September 2023
- Recall reported to NHTSA9 February 2024
- Owners notified9 April 2024
- Latest repair reportQ1 2026 — 0% repaired
Your rights
A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.
That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 9 February 2024.
To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.
Manufacturer contact
Owners may contact ZF customer service at 1-734-416-6200.
Official source
- Recalling manufacturer
- ZF North America, Inc.
- Safety standard
- FMVSS 121
- Recall initiated by
- ODI
Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.
Additional 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.safercar.gov.
Check your own vehicle
This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.
A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.