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2021 Ram 2500 Maintenance Schedule

Manufacturer-recommended service intervals for the Oil Change Indicator and open recall alerts for your 2021 Ram 2500.

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Recalls8Full scheduleKnown issues8

How Ram schedules service: Oil Change Indicator

Ram trucks use the Oil Change Indicator system to signal oil service based on driving conditions. The Ram 1500 (HEMI 5.7L, eTorque mild-hybrid, EcoDiesel 3.0L) and Ram 2500/3500 (Cummins 6.7L turbo-diesel) have markedly different intervals — the schedule below covers Ram 1500 gas. Cummins-equipped HD trucks have separate oil, fuel filter, and DEF service requirements.

⚠️

8 Open Recalls

Source: NHTSA

ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS

Campaign #21V798000 · Oct 14, 2021

Issue: Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 3500, 2500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. An electrical short in the relay may cause a vehicle fire with the ignition on or off.

Risk: A vehicle fire increases the risk of injury.

Fix: Owners are advised to park these vehicles outside of buildings or structures, and not near other vehicles, until the vehicle has been remedied. 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. 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. This recall has been superseded by 23V060.

AIR BAGS:SIDE/WINDOW:CURTAIN

Campaign #21V925000 · Nov 24, 2021

Issue: Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 2500, Ram 3500, and 2021 Ram 1500 Classic pickup trucks. The side air bag inflatable curtain (SABIC) assemblies may have been manufactured with the incorrect amount of compressed gas, which can result in an improper air bag deployment.

Risk: An air bag that deploys improperly can increase the risk of injury in a crash.

Fix: Dealers will replace the SABIC assemblies, free of charge. Owner notification letters were mailed January 17, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y99.

ELECTRICAL SYSTEM

Campaign #21V163000 · Nov 3, 2021

Issue: 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.

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.

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

Campaign #22V140000 · Oct 3, 2022

Issue: Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 2500 and 2021-2022 Dodge Durango vehicles, and 2019-2022 3500 cab chassis with GVWR less than 10,000 lbs. The ABS control module software may prevent the electronic stability control (ESC) malfunction indicator light from illuminating during certain conditions. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."

Risk: An ESC malfunction indicator light that fails to illuminate during an electronic stability control problem can increase the risk of a crash.

Fix: Dealers will update the ABS control module software, free of charge. Owner notification letters were mailed March 29, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Z20.

POWER TRAIN:AUTOMATIC TRANSMISSION

Campaign #22V835000 · Oct 11, 2022

Issue: FCA US, LLC (Chrysler) is recalling certain 2020-2023 Ram 2500 and 2020-2022 Ram 3500 vehicles. A build-up of pressure and heat inside the transmission may result in a transmission fluid leak from the dipstick tube.

Risk: Leaking transmission fluid may contact an ignition source within the engine compartment, increasing the risk of a fire.

Fix: Dealers will replace the transmission dipstick and transmission vent assembly, free of charge. Owner notification letters were mailed December 29, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. Chrysler's number for this recall is ZA3.

STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS

Campaign #22V904000 · Aug 12, 2022

Issue: Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 1500, 2500, and 3500 pickup trucks. The tailgate may not latch properly due to misaligned tailgate strikers, which could result in the tailgate opening while driving.

Risk: An unintended tailgate opening while driving may result in a loss of unsecured cargo, possibly creating a road hazard and increasing the risk of a crash.

Fix: Dealers will inspect the tailgate striker alignment to the box latch and adjust, if necessary, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is ZB8.

ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS

Campaign #23V060000 · Sep 2, 2023

Issue: Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 2500, 3500, 3500 Cab Chassis, and 4500, 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the heater grid relay with the ignition on or off.

Risk: An electrical short in the relay can result in an engine compartment fire with the ignition on or off, increasing the risk of injury.

Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the relay, free of charge. This will be a Phased campaign. Phase 1 will include 2023 model year vehicles. FCA US will notify dealers on or about 3/23/2023 and begin notifying owners on or about 4/5/2023. Phase 2 will include 2022 model year vehicles and Phase 3 will include 2021 model year vehicles. FCA US will notify dealers and owners on or about 4/27/2023 for Phase 2 and 5/11/2023 for Phase 3. Interim owner notification letters informing owners of the safety risk were mailed March 28, 2023. Owner notification letters are expected to be mailed April 5, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 13A. This recall is an expansion of and supersedes recall number 21V-798.

AIR BAGS:FRONTAL

Campaign #25V765000 · Jun 11, 2025

Issue: Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.

Fix: Dealers will replace the steering column control module, free of charge. Owner notification letters were mailed beginning December 11, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 14C. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning November 13, 2025.

Recall data refreshed Jul 26, 2026.

Essential maintenance

Critical for safety and preventing major damage

🛢️

Engine Oil & Filter

Every 8,000 mi

HEMI 5.7L: SAE 5W-20 every 8,000 miles per Oil Change Indicator. Pentastar 3.6L: SAE 0W-20. EcoDiesel 3.0L: full synthetic 5W-30, every 10,000 miles. Cummins 6.7L (HD): 15W-40 every 15,000 miles or 6 months.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

🔄

Tire Rotation

Every 8,000 mi

Rotate tires every 8,000 miles. 4WD models towing or hauling regularly: rotate every 5,000 miles to even out drivetrain wear.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

🛑

Brake Inspection

Every 8,000 mi

Inspect pads, rotors, and parking brake every 8,000 miles. Ram 1500 front pads typically last 40,000-60,000 miles under normal use; cut by 30-50% if towing heavily.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

⛽

Fuel Filter (EcoDiesel + Cummins)

Every 30,000 mi

EcoDiesel 3.0L: dual fuel filters (under hood + frame-mounted) replace every 30,000 miles. Cummins 6.7L: replace at 30,000 miles or sooner if water-in-fuel light triggers.

Estimated cost — typical U.S. ranges

Dealer

~$195–$250

Shop

~$135–$175

DIY

~$20–$60

On many modern cars the filter lives inside the fuel tank and is lifetime — verify before paying for a 'service'.

Important maintenance

Keeps your vehicle running smoothly and efficiently

💨

Engine Air Filter

Every 40,000 mi

Replace engine air filter every 40,000 miles. Trucks driven on construction sites or unpaved roads should inspect at every oil change.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

⚙️

Automatic Transmission Fluid (ZF 8HP70 / 8HP75)

Every 60,000 mi

Severe service (towing, plowing): replace ATF every 60,000 miles. Normal: 120,000 miles. Use Mopar ATF+4 — substitutes cause harsh 3-4 and 5-6 shifts.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

🔩

Transfer Case Fluid (4WD)

Every 60,000 mi

Ram 1500 4WD: replace transfer case fluid every 60,000 miles. Use Mopar ATF+4 for the BorgWarner 44-44 transfer case.

Estimated cost — typical U.S. ranges

Dealer

~$105–$140

Shop

~$75–$100

DIY

~$15–$40

AWD/4WD vehicles only. Easy drain-and-fill on most platforms.

🔧

Differential Fluid (front + rear)

Every 60,000 mi

Front and rear axle fluid: replace every 60,000 miles, or 30,000 miles if towing 6,000+ lbs regularly. Limited-slip rears require Mopar friction-modifier additive.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.

⚡

Spark Plugs (HEMI — 16 plugs)

Every 100,000 mi

HEMI 5.7L runs two spark plugs per cylinder (16 total) — replace at 100,000 miles. Pentastar 3.6L: standard 6 plugs at 100,000 miles. EcoDiesel: glow plug inspection at 100,000.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

🌡️

MS-12106 Coolant (Mopar HOAT)

Every 50,000 mi

Mopar HOAT (purple): first change at 100,000 miles or 5 years, then every 50,000 miles. EcoDiesel uses a different OAT formulation — do not mix.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Recommended maintenance

Extends the life of your vehicle and improves comfort

🌬️

Cabin Air Filter

Every 20,000 mi

Replace cabin air filter every 20,000 miles. Behind the glove box on Ram 1500.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2021 Ram 2500.

Reported to NHTSA

Tailgate unlatching after recall repair

STRUCTURE

6 NHTSA complaints · 2021-10 → 2026-06

“Electronic tailgate has unlatched itself and fallen open while driving 5 times now twice now resulting in damage and things falling out of rear of truck onto highway”
— Owner report, NHTSA ODI #11437427
“My vehicle was repaired for a known recall related to the tailgate unlatching issue. NHTSA ID Number: 22V904000 This repair was completed, and then my tailgate continued to open unexpectedly. I have taken it back to the dealership after damage was caused to my tailgate when it…”
— Owner report, NHTSA ODI #11695035

Read all complaints on NHTSA →

Camshaft and lifter failure, 6.7L Cummins

ENGINE

5 NHTSA complaints · 2024-02 → 2026-01

“The engine has had camshaft and lifter failure multiple times. The dealership has replaced the camshaft and lifters twice already , and now they have failed a 3rd time which has lead to metal in oil lubrication system. This has caused further damage to the engine crankshaft…”
— Owner report, NHTSA ODI #11641149
“The engine cam and lifters are bad. Engine started knocking with only 30,000 miles. Had to have lifters and cam replaced”
— Owner report, NHTSA ODI #11632320

Read all complaints on NHTSA →

Automatic transmission failure

POWER TRAIN

7 NHTSA complaints · 2022-08 → 2026-04

“The 68RFE automatic transmission in this 2021 Ram 2500 6.7L Cummins fails to engage reverse when the transmission reaches operating temperature. When the gear selector is placed in reverse and the accelerator is applied, the engine revs but the truck does not move. The defect is…”
— Owner report, NHTSA ODI #11734218
“In June 2021, this vehicle literally drove away while in the park gear. It was running and accelerated across a state highway, down an embankment and 200 feet into a cornfield while pulling a trailer. I immediately called Ram and they did perform an investigation. They…”
— Owner report, NHTSA ODI #11478386

Read all complaints on NHTSA →

Seat belt retractor fails to release

SEAT BELTS

3 NHTSA complaints · 2024-06 → 2026-01

“The rear right seat belt became stuck and would not release, trapping my [XXX] son. Although the buckle was unlatched, he was entangled in the seat belt, and the retraction system would not loosen. The vehicle was stationary at the time of the incident. Due to the inability to…”
— Owner report, NHTSA ODI #11708827
“The passenger side seat belt retractor failed on this truck a couple of months ago. We had the parts replaced by the local dealer and did not think anything about it until our second truck also had the same issue and seriously hurt my mother. Report number 11597310. As the same…”
— Owner report, NHTSA ODI #11597312

Read all complaints on NHTSA →

Recall repair delayed by unavailable parts

POWER TRAIN, ELECTRICAL SYSTEM

29 NHTSA complaints · 2022-04 → 2024-06

“Multiple critical recalls - 22V-904, 23V-060, 22V-140, and 22V-835. Two of these represent fire hazards! For the last several months they either didn't have the parts or availability to service. I tried multiple dealerships in my area. Getting these serviced has become extremely…”
— Owner report, NHTSA ODI #11528915
“On February 9 2023 Ram issued a recall on my vehicle Ram 2500. In that recall it was noted “ An electrical short in the relay can potentially lead to a vehicle fire with the ignition on or off” further owners were advised to park their vehicles outside and away from buildings.…”
— Owner report, NHTSA ODI #11541283

Read all complaints on NHTSA →

Electrical system fire under hood

ELECTRICAL SYSTEM

8 NHTSA complaints · 2021-08 → 2026-03

“At a stop light after 10 min of normal driving on country and city roads my truck started smoking from front passenger wheel well. Smoke intensified and quickly turned black. Immediately pulled over and found flames burning through front passenger wheel liner and from around…”
— Owner report, NHTSA ODI #11429824
“The contact owned a 2021 Ram 2500. The contact received notification of NHTSA Campaign Number: 21V798000 (Electrical System). The contact stated that while attempting to start the vehicle with a fob key from inside his residence, he did not hear the engine start. The contact…”
— Owner report, NHTSA ODI #11441016

Read all complaints on NHTSA →

Air bag non-deployment in frontal crash

AIR BAGS

3 NHTSA complaints · 2021-08 → 2024-05

“There was a severe head on collision and airbags did not deploy. The dealership says there was no deceleration however, the crash was severe enough that they should have deployed, the driver also tried to stop and the trucks airbag system did not detect the sudden brake. This is…”
— Owner report, NHTSA ODI #11438830
“The contact owned a 2021 Ram 2500. The contact stated that while driving 55-60 MPH, the vehicle crashed into a cow, causing the front bumpers to bend 2 ft. inward. The air bags failed to deploy. The contact sustained bruises on the left arm, on the shoulder, on the chest, on the…”
— Owner report, NHTSA ODI #11589293

Read all complaints on NHTSA →

Service brake failure to stop vehicle

SERVICE BRAKES

5 NHTSA complaints · 2022-11 → 2025-06

“While driving in stop & go traffic traveling at speeds less than 15mph, when I stepped on the brake pedal to slow / stop my RAM, the brake pedal failed to activate the brakes and the vehicle continue in a forward motion causing my RAM to collide with the vehicle traveling in…”
— Owner report, NHTSA ODI #11588347
“The contact owns a 2021 Ram 2500. The contact stated while driving approximately 30 MPH, the vehicle lost ABS functionality. The contact stated that while depressing the brake pedal, the vehicle failed to slow as needed, causing the vehicle to rear-end another vehicle. The…”
— Owner report, NHTSA ODI #11507667

Read all complaints on NHTSA →

Issues on other model years

  • 2018 Ram 2500 →
  • 2019 Ram 2500 →
  • 2020 Ram 2500 →
  • 2022 Ram 2500 →
  • 2023 Ram 2500 →
  • 2024 Ram 2500 →

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 27, 2026. Investigation data refreshed Jul 27, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2021 Ram 2500 reflects Ram's published service intervals and the Oil Change Indicator system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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