The 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.
The risk
A vehicle fire increases the risk of injury.
The fix
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 This recall has been superseded by recall number 21V-798.
Recall details
| NHTSA campaign | 21V-163 (21V163000) |
|---|---|
| Manufacturer number | Y08 |
| Manufacturer | Chrysler (FCA US, LLC) |
| Component | Electrical system |
| Report date | March 11, 2021 |
| Owners notified | May 3, 2021 |
| Vehicles affected | 19,214 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the electrical system
Frequently asked questions
Is the recall 21V-163 repair free?
Yes. Ram dealers will fix the problem at no cost: 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.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 19,214 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.