2023 Mercedes-Benz Sprinter 2500

The High-Pressure Fuel Pump (HPFP) and corresponding fuel delivery pressure regulator/sensors have suffered an internal mechanical failure. The system intermittently fails to maintain commanded rail pressure, leading to critical engine cylinder misfires (P0302, P0304) and severe long-term fuel adaptation breaches (P00C600, P008992, P017184, P218862). This defect is physically causing raw gasoline to leak into the combustion chambers, oil crankcase, and exhaust tract. The vehicle and all compromised components are fully intact and available for immediate inspection upon request. My life and the safety of surrounding motorists were put at risk during a severe incident on the highway. While driving uphill in fast-moving traffic, the high-pressure fuel pump experienced an abrupt mechanical failure/pressure drop. The Engine Control Unit immediately plunged the van into Limp Mode, causing an uncommanded, violent loss of propulsion. The vehicle became entirely unresponsive to the accelerator pedal. Managing a large, heavily loaded commercial vehicle that suddenly dropped speed on a highway incline nearly triggered a catastrophic multi-vehicle rear-end collision. The underlying mechanical defect has been repeatedly ignored by authorized dealerships due to diagnostic negligence. The vehicle has been presented to Mercedes-Benz of Fairfield and another authorized location three separate times. Technicians relied solely on surface-level live data, clearing active trouble codes and releasing the vehicle unrepaired. The problem routinely reproduces itself every 30 to 45 days once the computer's long-term fuel software can no longer mathematically compensate for the physical fuel drop. Independent diagnostic scans have verified the historical and stored fault codes, and physical evidence confirms heavy carbon/fuel fouling on Cylinder #

NHTSA ID

11770454

Incident

May 18, 2026

The ECM harness was wired too close to a sharp metal piece within the engine bay, the clip MBZ uses to secure it was insufficient to hold it back, the thick wiring harness got caught on the metal piece and overtime got cut deeply causing a short with thermal issues spreading to other components, the wiring harness melted together and caused so much heat in the engine bay that other components touching the thick wiring also have visible melt spots, if it wasn't caught because we got a shock from a metall component of the car and therefore realized there must be a short it could've potentially posed a fire risk.

NHTSA ID

11769942

Incident

Sep 29, 2026

On January 19, 2026, my neighbors / daughter noticed smoke was coming from under the van that had been parked for over 3 hours. Shortly after, he confirmed the van had caught fire. I asked him to call the fire department.

NHTSA ID

11748198

Incident

Jan 19, 2026

In August 2025, I had taken the van for a drive to charge things up, got home, put it in park and parked it in my driveway, which has a mild slope. ~ 30 seconds - 1 minute after me leaving the vehicle, it rolled backward out of the driveway, across a busy street and 1/4 into my neighbors yard. I was mortified, there is usually a lot of people walking their dogs, kids etc...and cars going by. The vehicle was stopped by the curb vs the 2nd back tire (Thie first one cleared the curb and was in my neighbors lawn. It ALMOST hit a BIG tree. I pulled it back into the driveway & checked it again, worried I may have somehow not put it in park, but it did it over and over again. Shortly after I put it in park and turned it off it "released" and started rolling spontaneously. I could have run over my neighbors; people, babies...pets, me... I piled logs and big rocks behind all 4 tires (put it park with the parking brake on of course,) & called the Mercedes dealer & made an appointment. I did not drive it again until it was "repaired," except for the fact that nothing showed up on the scanned as wrong. They kept if for 3 weeks but "it never did it again," & they "never found anything." They charged up the battery and said maybe it was because the battery got too low and that the chassis battery charges the transmission battery and maybe the transmission battery was low. They mentioned that they had had one other person come with the same problem. The local Winnebago dealership mentioned that they had had someone come in with the same complaint. With the vehicle unchanged after this potentially catastrophic event, how can I trust it? What happens if I am in it and it is parked on a slope and it does it again? What could happen if the transmission fails on the road? It was VERY SCARY. For a couple months I had a mini panic attack every time a young family walked by...what could have happened if they happened to be walking by when that happened. I will have to collect the info

NHTSA ID

11726807

Incident

Aug 20, 2025

2023 Sprinter van jack was pulled out for the first time to be used last week and found to be unsafe. The jack base is crowned in center, the edges flare upwards and large gouge/groove in metal base, causing the jack to noticeably wobble and rock in manner that it is unsafe to use, fear of jack tilting and dropping van onto user of jack. Jack base has obvious defects and unsafe to use. Have contacted dealer and referred to MBUSA who provided a case # and no resolution to provide a safe jack to replace the defective jack.

NHTSA ID

11700815

Incident

Nov 10, 2025

I had tuned up my sprinter van around 64000 miles. I put new ngk spark plugs and ignition coils on it. Ran for a day then. The codes said the number one ignition coil was bad. Change that out and it ran for about 8000 miles. Then stated to go in lymph mode again. I decided to replace them with original Mercedes spark plugs and Ignition coils. But when I put them in the van had no power and was jerking. It was doing this before I changed them out. It had no power and would barely go up a hill. I researched and seen certain Merecedes Sprinter vans from 2021 to 2023. Had a recall on the fuel pump. But I don't understand why my van wasn't included. It's showing all the systems them the fuel pump or something to do with the fuel pump is going bad. I changed the spark plugs and ignition coils twice in less than 3 months.

NHTSA ID

11690866

Incident

Jul 7, 2025

In Colorado. Vehucle has no response when pushing on the gas pedal. Dead pedal at a light in Gunnison and now again at my home at 9,450 ft.

NHTSA ID

11684056

Incident

Dec 31, 1969

Occasionally, the idle speed of the engine will drop to 400 rpm. When this happens, the vehicle does not respond to throttle input. If it happens in a parking lot, you can shift into park and coax the rpm higher, then shift to drive and move on. When it happens in the middle of an intersection while waiting to make a left turn, the story is very different. You can end up in a very dangerous situation. This has happened to me multiple times. I have not had an accident, but I have upset other drivers when I failed to clear an intersection in a timely manner. Knowing that the car will move when you press on the accelerator is critical for safely operating a vehicle. I purchased the vehicle new in October 2024, but did not start driving it until February 2025. The first incident happened about a week after hitting the road. It has happened many times since then. It took me an embarrassingly long time (months) to realize the problem was a low idle. The symptom I observed was that the vehicle failed to respond to the accelerator. That is the symptom that people will notice and that is the symptom that should be matched. It can be scary when it happens. Now that I know that it is brought on by low idle, I can watch for it and be prepared, but it can still leave me in a bad situation.

NHTSA ID

11673832

Incident

Feb 18, 2025

Check engine light with fault code P300E5F and/or P300E5E in MRD1 (CDI) Complaint The check engine light is on, with a possible reduction in power. No soot is present in the exhaust system. Fault codes: P300E5F ‑ The fill level of the Diesel Particulate Filter is too high. Early warning. P300E5E ‑ The fill level of the Diesel Particulate Filter is too high. Regeneration of the Diesel Particulate Filter is disabled. Additional information: No additional fault codes related to the Diesel Particulate Filter or Exhaust Gas Recirculation system may be present for this LI to apply. Cause These fault codes may be triggered due to unfavorable driving conditions, such as: •Frequent short‑distance trips •Extended idle periods •Infrequent highway driving •Incomplete regeneration cycles These conditions can lead to excessive soot accumulation in the Diesel Particulate Filter, resulting in elevated fill levels and regeneration lockout. Remedy Fault code P300E5F indicates that the Diesel Particulate Filter soot load has exceeded 130% but remains below 160%. Regeneration remains permitted. Fault code P300E5E indicates that the Diesel Particulate Filter soot load has exceeded 160%. Regeneration is disabled to protect components. 1. Perform a tailpipe wipe test Inspect the tailpipe for soot using a clean white cloth. • If soot is found, stop this procedure and follow LI49.20‑N‑078466. • If no soot is found, continue with Step 2. 2. Check the Diesel Particulate Filter data Using XENTRY, review and save the following information: • Diesel Particulate Filter fill level • Calculated soot load • Ash load • Regeneration history • Distance and operating time since the last successful regeneration • Relevant exhaust‑temperature and differential‑pressure actual values Process any additional fault codes according to the applicable Guided Tests before attempting regeneration. 3. Perform a manual standstill regeneration Perform a manual standstill regeneration of the Diesel Particulate Filter according to the current XENTRY instructions. • Save or print the regeneration results. 4. If the manual standstill regeneration completes successfully Clear the fault memory and verify that the Diesel Particulate Filter actual values are plausible. • Confirm that the applicable fault codes do not return. • Complete a road test and confirm that no fault codes return. • Use damage code 14370F7 if the vehicle is under warranty. Release the vehicle only after proper Diesel Particulate Filter operation has been confirmed. 5. If the manual standstill regeneration does not complete successfully Replace the Diesel Particulate Filter according to the current Workshop Information System instructions. • Confirm that the MRD1/CDI control unit has the latest available software. Update the software if it is not current. • Thoroughly inspect the exhaust system downstream of the Diesel Particulate Filter for soot. • If soot is found, follow LI49.20‑N‑078466 for the required inspection and replacement of affected components. • Complete all required teach‑in, initial startup, and reset procedures after the repair. • Clear the fault memory and perform a road test. • Recheck the fault memory and verify that the Diesel Particulate Filter actual values are plausible.

Sprinter 907 ‑ Oil leak in area of wheel hub / rear axle shaft Complaint Oil leak in the area of the wheel hub Cause Insufficient sealing with previous axle shaft with single sealing lip Remedy New axle shafts have been created with a dual lip style seal. New part numbers: A 906 350 37 10 ‑‑> A 907 350 19 03 ( left / ring gear 215 ) A 906 350 38 10 ‑‑> A 907 350 20 03 ( right / ring gear 215 ) A 906 350 39 10 ‑‑> A 907 350 21 03 ( left / ring gear 245 ) A 906 350 40 10 ‑‑> A 907 350 22 03 ( right / ring gear 245 )

Check engine light with fault code P3005CA in MRD1 (CDI) Complaint The check engine light is on, with a possible reduction in power and the presence of soot in the exhaust system. Fault code P3005CA: The diesel particulate filter efficiency is insufficient. Additional information: Additional fault codes may be present, related to the Diesel Particulate Filter (DPF) system or the Exhaust Gas Recirculation (EGR) system. Cause This fault code sets due to the following factors: 1. Damage to the Diesel Particulate Filter (DPF) unit. 2. The N74 Soot Particulate Sensor Control Unit detects soot or debris downstream of the underbody SCR catalytic converter. Remedy Note: The XENTRY guided tests for fault code P3005CA have been revised. Complete all applicable guided tests before replacing components. TIPS cases are no longer required unless: • No soot is found at the Diesel Particulate Filter (DPF) outlet. • The fault occurs on a vehicle produced after the applicable production clean point. • The fault returns after the applicable repairs have been completed. • The fault occurs on a vehicle confirmed to have the latest available MRD1/CDI control unit software.

Check engine light with reduced power with fault codes P300A6D, P300974, P300DFB, or P300DE8 Complaint The check engine light is activated, accompanied by one or more of the following fault codes related to the boost pressure positioner: • P300A6D: The boost pressure is too low. Charge air cooler. • P300A6F: The boost pressure is too low. (High‑pressure turbocharger) • P300A71: The boost pressure is too low. (Low‑pressure turbocharger) • P300974: Component 'Boost pressure positioner' has a malfunction. The boost pressure is too low. • P300DFB: Component 'Boost pressure positioner' has a malfunction. • P300DE8: Boost pressure control A has a malfunction after a cold start. Cause The potential causes for these fault codes are: A. Leak or Blockage in the Intake or Charge Air System: This can prevent proper airflow, affecting boost pressure. B. Insufficient Source Vacuum, Vacuum Leak, or Sticking/Weak Vacuum Component: These issues can prevent the boost pressure positioner from functioning correctly. • For Model Year 2023‑Current vehicles operating at approximately 4,000 ft elevation or above, reduced ambient pressure and/or high brake demand may contribute to reduced available vacuum differential and underboost complaints, even when no discrete vacuum component failure is identified. C. Internal Malfunction of the Boost Pressure Positioner: The component itself may be faulty. D. Internal Defect with the Variable Turbine Geometry (VTG) System Inside the Turbocharger: Issues within the turbocharger can affect boost pressure control.

EGR Valve Diagnosis & Cleaning (and EGR Cooler Cleaning) – OM642, Sprinter 906/907 Complaint Complaint A: The engine is jolting/bucking between 1700 and 1900 rpm. Complaint B: One or more mechanical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of mechanical fault codes in table below. NOTE: If one or more electrical related fault codes for EGR Valve are also present in CDI, utilize Complaint C. Review list of electrical fault codes PDF document in attachments. Complaint C: One or more electrical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of electrical fault codes PDF document attached. NOTE: This LI supersedes LI14.20‑N‑073813, which is no longer valid. Cause Cause of Complaint A: Increased friction between the EGR Valve blade and seat due to soot deposits causing a delay of the EGR Valve being able to reach the target value of the EGR Valve position controller. NOTE: This causes the EGR Valve blade and potentially the boost pressure controller to oscillate. Cause of Complaint B: Soot deposits between the EGR Valve blade and seat leading to the EGR Valve no longer being able to meet the desired target of the EGR Valve position controller. Cause of Complaint C: Internal EGR Valve or other electrical faults related to the EGR Valve function.

Acoustic Warning or message occurring when a closed sliding door is not recognized Complaint Customer may state the warning message or indicator accompanied by acoustic tone alerting the sliding door is ajar when the door is completely closed Cause There are several reasons that lead to the failure occurring: ‑ Mechanical damage through bending when loading and unloading ‑ Worn contact plates ‑‑> After detachment of silver plating, the coper plate is corroded ‑ Movement of sliding door/body when driving ‑‑> Contact pins do not always make contact with contact plate ‑‑> Central locking system fault message in instrument cluster Remedy In a problem case, replace contact switch for vehicles with +T50/+T55/+EL9 or contact plate with A4478201903 Check the fit of the sliding doors here and make any necessary adjustments as per AR72.16‑S‑1023E (447 /448) and AR72.16‑D‑1023TS (907/910). Further valid damage codes: 82326 Contact switch for central locking system on sliding door 82347 Contact plate for central locking system on sliding door 53196 K/Z contact plate for central locking system on sliding door 82645 Contact switch for sliding door