ZF North America – Inversion Valve Failure/FMVSS 121

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.”

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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