ZF North America (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.”
ZF North America – Inversion Valve Failure/FMVSS 121
| Report Received Date | 02/09/2024 |
| NHTSA ID | 24E011000 |
| Consequence Summary | Delayed parking brake engagement can result in unintended vehicle movementeasing the risk of a crash. |
| Corrective Action | ZF will replace aftermarket equipment, free of charge. Affected vehicle manufacturers will determine the appropriate remedy for their vehicles. Owners may contact ZF customer service at 1-734-416-6200. |
| Recall Code | NR (Not Reported) |
| Potentially Affected | 2493 |
| Fire Risk When Parked | No |
| Do Not Drive | No |
| Recall Link | Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=24E011000) |
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