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RAM 2500 Recall 21V163: Electrical short can cause fire in diesel engine heater relay

NHTSA campaign 21V163, reported March 11, 2021, 19,214 vehicles potentially affected.

What this recall means for you

Certain diesel-powered cab chassis trucks may develop an electrical short in the solid state intake heater grid relay. The short can lead to a vehicle fire, which raises the risk of injury.

Until the repair is complete, do not park the vehicle inside a building or structure, or near other vehicles. Dealers will inspect the relay and replace it if needed, and may apply insulating material to the relay in some cases. The repair is free at an authorized dealer. Owner notification letters were mailed November 10, 2021, and you can contact FCA US, LLC customer service at 1-800-853-1403. Check your VIN for open recalls, since this recall has been superseded by recall 21V-798.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 21V163Chrysler (FCA US, LLC)
Component
ELECTRICAL SYSTEM
Problem
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 2500, 3500, and 3500, 4500, and 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the Solid State Intake Heater Grid Relay, which could result in a vehicle fire.
Risk
A vehicle fire increases the risk of injury.
Remedy
Dealers will inspect and, if needed, replace the Solid State Intake Heater Grid Relay ("Relay"); if FCA US Recall ID Y08 (NHTSA Recall ID 21V-163) is open, then insulating material will be applied to the Relay after inspection. Customers are advised to not park these vehicles inside of buildings or structures, or near other vehicles until the vehicle has the final repair completed. Owner notification letters were mailed November 10, 2021. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y76. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y08. This recall has been superseded by recall number 21V-798.
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

RAM 25002021
RAM 35002021
RAM 45002021
RAM 55002021