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2015 Ram Promaster 2500 Recalls, Issues & Maintenance

The 2015 Ram Promaster 2500 has no open NHTSA recalls. Owners report 5 recurring issue clusters, led by “Motor-to-transmission coupler failure.” 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.

No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2015 Ram Promaster 2500.

Reported to NHTSA

Motor-to-transmission coupler failure

POWER TRAIN

5 NHTSA complaints · 2017-03 → 2017-03

“THE COUPLER BETWEEN THE MOTOR AND THE TRANSMISSION HAS REPEATEDLY FAILED; ALSO THE VERY FIRST AXLE WAS FAILING AND WAS REPLACED”
— Owner report, NHTSA ODI #10967663
“THE COUPLER BETWEEN THE MOTOR AND THE TRANSMISSION HAS REPEATEDLY FAILED; ALSO, THE AXLE HAS FAILED TWICE, THE LAST AXLE FAILURE THE SHAFT SPLIT IN HALF AND PART OF IT ENDED UP IN THE GEAR BOX”
— Owner report, NHTSA ODI #10967666
“THE COUPLER BETWEEN THE MOTOR AND THE TRANSMISSION HAS REPEATEDLY FAILED; ALSO, THE A/C CONTINUALLY LEAKS AS THE HIGH PRESSURE HOSE FROM CONDENSOR TO COMPRESSOR IS TOO SHORT”
— Owner report, NHTSA ODI #10967670

Read all complaints on NHTSA →

Parking brake freezing and brake pad wear

SERVICE BRAKES

2 NHTSA complaints · 2018-04 → 2019-02

“THE DRUM-STYLE PARKING BRAKE BECOMES FROZEN IN COLD WEATHER MAKING THE VEHICLE UN-DRIVEABLE UNTIL SUCH TIME AS IT IS DRIED OUT AND THE SHOES FREED”
— Owner report, NHTSA ODI #11181237
“I HAVE HAD PROBLEMS WITH MY BRAKES SENSE I GOT MY VAN, THE PADS WEAR FAST AND LEAVE BLACK DIRT ALL OVERS THE WHEELS, AND NOTHING GETS DONE ABOUT IT”
— Owner report, NHTSA ODI #11083265

Read all complaints on NHTSA →

Engine cooling fan and radiator failure

ENGINE AND ENGINE COOLING, EQUIPMENT

5 NHTSA complaints · 2020-01 → 2023-09

“The contact owns a 2015 Ram Promaster 2500. The contact stated that while his client was driving at an undisclosed speed, the vehicle was shudder abnormally, prompting him to pull over to the shoulder of the roadway. No warning lights were illuminated”
— Owner report, NHTSA ODI #11547146
“TL* THE CONTACT OWNS A 2015 RAM PROMASTER 2500. THE CONTACT STATED THAT WHEN THE VEHICLE TURNED OFF, THE ENGINE COOLING FAN REMAINED ON FOR FIFTEEN SECONDS AND THEN SHUT OFF”
— Owner report, NHTSA ODI #11299466
“IN 2018 WE HAD A MAJOR RADIATOR PROBLEM, FAN, FLUID, HOSES ALL BLEW ALL OVER A CUSTOMERS DRIVEWAY”
— Owner report, NHTSA ODI #11408149

Read all complaints on NHTSA →

Headlight failure while driving

EXTERIOR LIGHTING

4 NHTSA complaints · 2017-06 → 2019-12

“THE LOW BEAM HEADLIGHTS KEEP BURNING OUT. NUMEROUS TIMES A YEAR”
— Owner report, NHTSA ODI #11072172
“TL* THE CONTACT OWNS A 2015 RAM PROMASTER 2500. WHILE DRIVING AT APPROXIMATELY 55 MPH, THE HEADLIGHTS FAILED TO ILLUMINATE”
— Owner report, NHTSA ODI #10994936
“TL* THE CONTACT OWNS A 2015 RAM PROMASTER 2500. WHILE DRIVING APPROXIMATELY 70 MPH, THE VEHICLE EXPERIENCED AN ELECTRICAL FAILURE AND THE HEADLIGHTS STOPPED WORKING”
— Owner report, NHTSA ODI #10992662

Read all complaints on NHTSA →

Unexpected loss of power and transmission malfunction

POWER TRAIN

6 NHTSA complaints · 2019-02 → 2021-04

“WHEN DRIVING ON THE HIGHWAY THE TRANSMISSION DO UNEXPECTEDLY SHIFT TO NEUTRAL AND ALSO WHEN APPROACHING TO STOP LIGHT IT STARTS JUMPING THE SPEED AND THE TRANSMISSION DOESN'T GET NEUTRAL WHEN PRESS THE STOP PEDAL IT KEEP MOVING, ALSO HAPPENS WITH REVERSE”
— Owner report, NHTSA ODI #11387086
“LOSS OF POWER/ ACCELERATION MORE THAN 10 TIMES IN 2 DAYS. RESULTING IN HAVING TO COME TO A COMPLETE STOP IN THE MIDDLE OF THE HIGHWAY, UNABLE TO PULL OVER TO THE SHOULDER”
— Owner report, NHTSA ODI #11179948
“2015 RAM PROMASTER DIESEL 2500 WITH 72000 MILES. VEHICLE WAS IN EXCELLENT CONDITION, WELL MAINTAINED, WITH OIL CHANGES PER FACTORY RECOMMENDATIONS”
— Owner report, NHTSA ODI #11245363

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 13, 2026. Investigation data refreshed Sep 13, 2026.

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

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.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

10 crashes 2010–2024

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

0

complaints mentioning a crash

0

complaints mentioning a fire

Reviewed known issues for this 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 2015 Ram Promaster 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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