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Ford F-350 rear axle may bend, driveshaft can separate

NHTSA campaign 21V536000 · Reported 2021-07-15 · Ford Motor Company

high How serious is it? About this label

This is serious because you could lose drive power or have the truck move on its own, but the notice does not tell owners to stop driving, so get it inspected as soon as you can and always set the parking brake.

What's wrong, in plain English

On certain 2020-2021 Ford F-350 Super Duty pickups with the 6.7L diesel engine and a Dana 275 rear axle, the rear axle housing may not be strong enough to carry the truck's load. It can bend out of shape. If that happens, the driveshaft, the spinning bar that sends power to the rear wheels, can come apart. The truck can lose power while driving, or roll on its own if parked without the parking brake set.

What you should do

1. Enter your VIN at nhtsa.gov/recalls to confirm your truck is included in campaign 21V536000 (Ford calls it 21S31).
2. Call your Ford dealer, or Ford customer service at 1-866-436-7332, and book an inspection of the rear axle housing.
3. The dealer will repair or replace the housing if needed at no cost to you.

Affected vehicles (2)

Who to contact

Ford — official Ford recall lookup

Customer service: 1-866-436-7332

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Official notice

Component
POWER TRAIN:AXLE ASSEMBLY
Summary
Ford Motor Company (Ford) is recalling certain 2020-2021 F-350 Super Duty pickup trucks equipped with 6.7L diesel engines and Dana model 275 rear axles. The rear axle housing may not support the load of the pickup truck and deform, which could result in driveshaft separation.
Safety risk
Driveshaft separation may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied, increasing the risk of a crash.
Remedy
Dealers will inspect the axle housing for deformities, and repair or replace the housing, as necessary, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall 21S31.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.