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Smart Fortwo Recall 17V448: Parking brake nut can loosen, letting vehicle roll on slopes

NHTSA campaign 17V448, reported July 16, 2017, 5,061 vehicles potentially affected.

What this recall means for you

A lock nut that secures the parking brake cable to the parking brake lever may loosen over time. As it loosens, the parking brake lever has to travel farther before the brake engages, and the holding force can drop to the point that the vehicle is no longer safely secured in all parking situations.

This creates a risk that the vehicle could unexpectedly move when parked on a slope, increasing the risk of a crash. Owners should take this seriously and have the issue checked promptly.

The repair is free. Mercedes-Benz USA will notify owners, and authorized dealers will replace the parking brake cable lock nut at no charge. Owners can contact smart customer service at 1-877-496-3691 for more information, and can check their VIN for any open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 17V448Mercedes-Benz USA, LLC.
Component
PARKING BRAKE
Problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 smart fortwo vehicles. In these vehicles, the lock nut that secures the parking brake cable to the parking brake lever may loosen over time, resulting in increased parking brake lever travel before the parking brake engages.
Risk
As the parking brake lever travel increases, the holding force may decrease to a point where the vehicle is no longer safely secured in all parking situations, allowing the vehicle to unexpectedly move when parked on a slope, increasing the risk of a crash.
Remedy
MBUSA will notify owners, and dealers will replace the parking brake cable lock nut, free of charge. The recall began September 20, 2017. Owners may contact smart customer service at 1-877-496-3691.
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.

Affected vehicles

Smart Fortwo2016