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Freightliner Business Class M2 Recall 17V402: Air brake valve may be missing, risking sudden parking brake application

NHTSA campaign 17V402, reported June 26, 2017, 1,550 vehicles potentially affected.

What this recall means for you

Some Freightliner M2 Business Class, 108SD, and 114SD trucks from model years 2015 through 2017 may be missing a required check valve in one port of the spring brake modulation valve. Without it, the primary air brake system is not isolated from the secondary system.

If the secondary system loses air pressure quickly, the primary system can lose pressure too, which may cause the parking brakes to apply suddenly. A sudden application of the parking brakes while driving could increase the risk of a crash.

The repair is free. Daimler Trucks North America will notify owners, and authorized dealers will inspect the vehicle and install a check valve where needed. Owners can contact DTNA customer service at 1-800-745-8000 and reference recall FL-740, and should 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 17V402Daimler Trucks North America LLC
Component
SERVICE BRAKES, AIR
Problem
Daimler Trucks North America (DTNA) is recalling certain 2015-2017 Freightliner M2 Business Class, 108SD, and 114SD vehicles. The affected vehicles might not have a required check valve installed in one of the ports of the spring brake modulation valve. Without the valve, the primary air system is not isolated from the secondary air system.
Risk
A rapid loss of air pressure in the secondary system could cause a similar rapid loss of pressure in the primary system, which may lead to a sudden application of the parking brakes. This could increase the risk of a crash.
Remedy
DTNA will notify owners, and dealers will inspect the vehicles, installing a check valve, as necessary, free of charge. The recall began on August 24, 2017. Owners may contact DTNA customer service at 1-800-745-8000. DTNA's number for this recall is FL-740.
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

Freightliner 108SD201520162017
Freightliner 114SD201520162017
Freightliner Business Class M2201520162017