Trailer Brakes May Not Be Applied – Syncro Hayes Sway Master

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NHTSA Campaign Number: 18E045
Manufacturer Syncro Corporation
Potential Number of Units Affected 1,944


Trailer Brakes May Not Be Applied

If the trailer brakes cannot be applied, it can cause a loss of control, increasing the risk of a crash.



Syncro Corporation (Syncro) is recalling certain Hayes Sway Master aftermarket sway control products, part number 81775. These units may conflict with the tow vehicle’s factory-installed integrated brake controllers thereby disabling the tow vehicle’s ability to apply the trailer brakes



Syncro will notify owners, instructing them to return the unit for repair, free of charge. The recall began on August 16, 2018. Owners may contact Hayes Customer Service at phone number 1-800-882-1204.



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


Recall Acknowledgement

July 19, 2018

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