The 2020 Ram 4500 has 9 NHTSA recall campaigns affecting an estimated 933,498 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 4 complaints with NHTSA, most often about the visibility. Last updated July 5, 2026.
Recall campaigns
SERVICE BRAKES, HYDRAULIC22V7590002022-10-1126,961 affected
Defect
Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 4500 and 5500 Cab Chassis vehicles. The rear brake hose inside diameter may be too small, which could cause the hose to rupture. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 106, "Brake Hoses."
Consequence
A brake hose rupture can cause a loss of braking ability, increasing the risk of a crash.
Remedy
Dealers will replace the rear brake hoses, free of charge. Owner notification letters were mailed April 27, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is ZA5.
VISIBILITY22V0350002022-01-27171,789 affected
Defect
Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500 and Ram 3500 vehicles, Ram 3500 Cab Chassis, 4500 Cab Chassis, 5500 Cab Chassis and 3500 Cab Chassis with a gross vehicle weight rating (GVWR) of less than 10,000 lbs. The windshield wiper arms may loosen, possibly causing the wipers to function…
Consequence
Reduced visibility increases the risk of a crash.
Remedy
Dealers will tighten the wiper nuts, free of charge. Owner notification letters were mailed February 15, 2022. This recall is an expansion of recall number 20V-208. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Z08.
Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500, 3500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. The High Pressure Fuel Pump (HPFP) may fail, resulting in a sudden engine stall without warning.
Consequence
An engine stall increases the risk of a crash.
Remedy
Dealers will replace the HPFP, update the Powertrain Control Module (PCM) software, and inspect and replace additional fuel system components as necessary, free of charge. Interim owner notification letters to inform owners of the safety recall were mailed on January 4, 2022. Owner notification letters were mailed…
ENGINE AND ENGINE COOLING21V4390002021-06-1032,002 affected
Defect
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.
Consequence
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.
WHEELS21V3980002021-05-27447,985 affected
Defect
Chrysler (FCA US, LLC) is recalling certain 2012-2021 RAM 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles. Incorrect information in the Service and Owner's Manuals may cause the flanged lug nuts to be over-tightened, which could result in a broken wheel stud and possible wheel separation.
Consequence
Wheel separation can cause a vehicle crash.
Remedy
Dealers will update the torque specification in the owner's manual and other published service documents. Dealers will also inspect the vehicle's wheel studs, replacing them if necessary, free of charge. Owner notification letters were mailed on November 30, 2021. Campaign Y36 owner notification letters were…
SERVICE BRAKES, HYDRAULIC21V0230002021-01-264 affected
Defect
Excellance, Inc (Excellance) is recalling certain 2019-2020 Excellance-modified RAM 4500/5500 vehicles to be equipped with CLASS Suspension Systems. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive…
Consequence
A worn rear brake caliper flexible line may cause brake fluid leakage which may result in a partial or complete loss of the rear brakes, increasing the risk of a crash.
Remedy
Excellance will notify owners, and dealers will install a kit to remedy any damage and to prevent any future damage, free of charge. The manufacturer has not yet provided a schedule for recall notification. Owners may contact Excellance customer service at 1-800-882-9799.
SERVICE BRAKES21V0160002021-01-206 affected
Defect
Custom Truck And Body Works is recalling certain 2020 Dodge 4500 and 5500 vehicles. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes.
Consequence
A worn rear brake caliper flexible line may cause brake fluid leakage, which may result in a partial or complete loss of the rear brakes, increasing the risk of a crash.
Remedy
Custom Truck And Body Works will notify owners, and dealers will repair the affected suspension systems, and rear brake caliper flexible line, free of charge. Owners may contact Custom Truck And Body Works customer service at 1-706-553-9178. Custom Truck And Body Works number for this recall is 20E-031.
SERVICE BRAKES, HYDRAULIC21V0080002021-01-1323 affected
Defect
Braun Northwest (Braun Northwest) is recalling certain 2019-2020 RAM 4500/5500 vehicles equipped with Liquid Spring rear suspension systems. In the affected suspension systems, the rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a…
Consequence
A worn rear brake line may leak fluid, resulting in a partial or complete loss of the rear brakes, increasing the risk of a crash.
Remedy
Braun Northwest will notify owners, and dealers will install a repair kit to each rear caliper and modify the rear brake caliper flexible line mounting. Any worn rear brake caliper flexible lines will be replaced as needed, free of charge. The recall began June 8, 2020. Owners may contact Braun Northwest customer…
ENGINE AND ENGINE COOLING20V5110002020-08-2732,318 affected
Defect
Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 3500, 4500 and 5500 cab chassis built with a Cummins 6.7L High Output engine. Inadequate warmup protection can cause a lack of oil film on the engine connecting rod bearings while the engine is reaching operating temperature. This can result in engine damage…
Consequence
A damaged engine block may leak oil, which can contact hot engine or exhaust components, increasing the risk of a fire.
Remedy
Chrysler will notify owners, and dealers will flash the engine calibration software to enhance the engine warm up protection, free of charge. The recall began September 10, 2020. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is W57.
Complaints by component
VISIBILITY
2
FUEL SYSTEM, DIESEL
1
FUEL/PROPULSION SYSTEM
1
Total complaints4
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The contact owns a 2020 ram 4500. The contact stated that while driving approximately 65 mph during a rainstorm, the windshield wipers were activated; however, the windshield wipers failed to engage as needed. The contact attempted to activate the windshield wipers several times, but the…”
“The contact owns a 2020 ram 4500. The contact received notification of nhtsa campaign number: 21v880000 (fuel system, diesel) and 22v035000 (visibility) however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had…”
“The contact owns a 2020 ram 4500. The contact received notification of nhtsa campaign number: 21v880000 (fuel system, diesel) and 22v035000 (visibility) however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had…”
“Truck turned off while driving and died. Would not turn back on. Was towing a 40ft gooseneck trailer with a load on it. Truck was stopped blocking multiple lanes of traffic. Truck and trailer had to be towed to nearest dealership where they found the cp4 fuel pump had failed and the entire fuel…”
Defect investigations
InvestigationEA23001 Opened 2023-03-17 · open
High pressure fuel pump failure
The Office of Defects Investigation (ODI) opened PE21-021 on October 14, 2021, to investigate incidents alleging a stall/loss of motive power as a result of high-pressure fuel pump failures in certain model year (MY) 2019-2020 Ram 2500, 3500, 4500, and 5500 heavy duty trucks equipped with 6.7L Cummins turbodiesel…
InvestigationPE21021 Opened 2021-10-14 · closed 2023-04-14
High pressure fuel pump failure
The Office of Defects Investigation (ODI) opened PE21-021 on October 14, 2021 to investigate allegations of stall/loss of motive power as a result of high pressure fuel pump failures in certain model year (MY) 2019-2020 RAM 2500, 3500, 4500, and 5500 heavy duty trucks equipped with 6.7L Cummins turbodiesel engines.On…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2020 Ram 4500 as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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