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Ram Trucks Low Oil Warning Software Problem

NHTSA campaign 21V439000 · Reported Jun 10, 2021 · Chrysler (FCA US, LLC)

critical How serious is it? About this label

Low oil can damage the engine, leading to an oil leak or a punctured engine block, which increases the risk of a fire. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	21V439000
Reported to NHTSA	Jun 10, 2021
Manufacturer	Chrysler (FCA US, LLC)
Part affected	Engine And Engine Cooling:engine:oil/lubrication
Vehicles covered	6 model/year combinations, model years 2019–2020
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

On these Ram trucks, the engine calibration software may fail to warn the driver when the engine oil level gets too low. Running the engine without enough oil can damage it, which in some cases can lead to an oil leak or a punctured engine block.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your vehicle is affected.
2. Contact a dealer, or call FCA US LLC customer service at 1-800-853-1403, to schedule the software update.
3. The dealer will update the engine calibration software free of charge.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 21V439000. More in how recalls work.

Affected vehicles (6)

2019 RAM 3500
2019 RAM 4500
2019 RAM 5500
2020 RAM 3500
2020 RAM 4500
2020 RAM 5500

Who to contact

RAM — official RAM recall lookup

Customer service: 1-800-853-1403

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

What RAM Engine and Cooling Recalls Involve Stalling or Fire? · all 7 RAM recalls in this area

Other RAM 3500 recalls

Apr 9, 2026Ram Trucks Instrument Panel Display Failurehigh
Feb 2, 2026Jeep And Ram Trailer Tow Module Failurehigh
Dec 18, 2025Ram 3500, 5500 trucks: airbag and stability flawcritical
Dec 1, 2025Ram 3500, 5500 Instrument Cluster Display Failurehigh
Dec 1, 2025Ram 1500, 2500 and 3500 side airbag inflators may rupturehigh
Nov 6, 2025Ram Trucks: Driver's Air Bag May Not Deployhigh

All 43 3500 recalls

Official notice

Component: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
Summary: Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 3500, 4500, and 5500 cab chassis vehicles equipped with a Cummins 6.7L High Output engine. The engine calibration software may not warn about low oil volume.
Safety risk: Low oil can damage the engine, causing an oil leak or a punctured engine block, increasing the risk of a fire.
Remedy: Dealers will update the engine calibration software, free of charge. Owner notification letters were mailed June 25, 2021. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y21.

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