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Mitsubishi Fuso FEC7T Recall 20V645: Brake Assist May Fail From Pump Heat, Raising Crash Risk

NHTSA campaign 20V645, reported October 19, 2020, 2,873 vehicles potentially affected.

What this recall means for you

The brake booster vacuum pump assembly can be affected by heat radiating from the exhaust manifold during normal engine operation. This heat can crack the diaphragm inside the pump, causing a loss of vacuum.

If vacuum is lost, power brake assist may stop working. Without power assist, the brakes become much harder to press, which increases the risk of a crash.

Authorized dealers will replace the vacuum pump and install exhaust heat shields at no cost to you. Owner notification letters were mailed December 15, 2021. You can also contact Mitsubishi Fuso Truck of America customer service at 1-877-711-0707, and check your vehicle identification number (VIN) for 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 20V645Mitsubishi Fuso Truck of America, Inc.
Component
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
Problem
Mitsubishi Fuso Truck of America, Inc. (MFTA) is recalling certain 2019-2021 FEC7T, FECZT, and FEC9T vehicles. The brake booster vacuum pump assembly may be affected by heat radiating off the exhaust manifold during normal engine operation. This heat can cause the diaphragm in the pump to crack, resulting in loss of vacuum in the vacuum pump.
Risk
If loss of vacuum occurs, power brake assist may become inoperable, increasing the risk of a crash.
Remedy
Dealers will replace the vacuum pump and install exhaust heat shields, free of charge. Owner notification letters were mailed December 15, 2021. Owners may contact MFTA customer service at 1-877-711-0707.
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

Mitsubishi Fuso FEC7T201920202021
Mitsubishi Fuso FEC9T201920202021
Mitsubishi Fuso Feczt201920202021