The Recall Desk
Our severity:HighNHTSA·24E011000·Announced 2024-02-09

ZF Recalls Park Brake Actuation Air Brake Systems

ZF is recalling certain park brake actuation air brake systems because a piston failure may delay parking brake engagement, increasing crash risk.

What this means for you

Our assessment, not the agency’s: severity 3/5 (High).

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: The recall involves a structural vehicle defect (brake system) that increases the risk of a crash, but the source text does not report any deaths or serious injuries, placing it in the High severity category.

Plain-English summary

ZF North America, Inc. is recalling certain park brake actuation air brake systems equipped with Haldex inversion relay valves, part numbers 9718990020 and RKN28032. The recall involves a defect where an internal piston in the inversion valve may fail, which delays the engagement of the parking brake. As a result, these valves fail to comply with Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."

Delayed parking brake engagement can result in unintended vehicle movement, increasing the risk of a crash. The source text does not specify the number of affected vehicles or the specific vehicle models involved.

ZF will replace the aftermarket equipment free of charge. Affected vehicle manufacturers will determine the appropriate remedy for their vehicles. Owner notification letters were mailed on April 9, 2024. Owners may contact ZF customer service at 1-734-416-6200 or the NHTSA Vehicle Safety Hotline at 1-888-327-4236.

The recalled product

Product
SERVICE BRAKES, AIR recall
Manufacturer
ZF North America, Inc.
Category
Vehicle — Brake System
Hazard
Affected units
2,493

Distribution

Distributed nationwide across the United States.

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