Mercedes-Benz Metris check engine light comes on

Filed Oct 10, 2026 · Engine, Transmission · IL

The check engine light came on and the code reads PO52e. Mercedes has a Intake Line Assembly Extended Emissions Warranty (Code P052E) up to 150,000 miles. They’ve admitted this was a problem with this engine but only covers 3 other vehicles with the identical platform, & excluded the Mercedes Metris

Filed Sep 11, 2026 · Engine · PA

My 2019 Mercedes-Benz Metris, with approximately 78,000 miles, developed a check-engine light and diagnostic code P052E/P052E71 for a failure involving the positive crankcase ventilation/crankcase ventilation regulator system. I was advised that the repair will cost approximately $3,000 because the failed ventilation component is part of a larger assembly. I am concerned because Mercedes-Benz has acknowledged this same P052E71 crankcase ventilation failure on other Mercedes-Benz models equipped with the M274 engine and has provided extended warranty coverage on certain vehicles. My Metris also uses the M274 engine, but Mercedes-Benz has excluded the Metris from that extended coverage. I have also learned that other Metris owners have reported the same P052E/P052E71 failure. I am filing this complaint because I believe this may be a recurring defect in the crankcase ventilation system on M274-equipped Mercedes-Benz Metris vehicles and should be investigated to determine whether these vans should have received the same repair coverage or corrective action as other affected Mercedes-Benz vehicles.

Filed Nov 25, 2025 · Fuel system · NJ

My 2022 Mercedes-Benz Metris recently experienced a sudden onset of engine issues, triggering the Check Engine Light. Diagnostic data retrieved from the vehicle (via onboard telematics) revealed the following error codes via onboard OBD GPS Bouncie: P0300: Random/Multiple Cylinder Misfire Detected P0301: Cylinder 1 Misfire Detected P0304: Cylinder 4 Misfire Detected Upon professional inspection, a mechanic diagnosed the root cause of these misfires as critically low fuel pressure resulting from a failed low-pressure fuel pump. The mechanic advised that the fuel pump requires immediate replacement. These symptoms (low fuel pressure causing engine misfire and potential stall) align exactly with the safety defect described in the federal safety agency Recall Campaign #23V881 (and the related #23V444). That recall describes a defect where the fuel pump impeller deforms and meets resistance, causing a drop in fuel delivery and potential loss of motive power. Despite my vehicle being the same model year (2022) and suffering the identical component failure described in the recall documents, my VIN [XXX] ) is currently excluded from the eligibility list. Corrective Action Sought: I request that the federal safety agency investigate this failure as evidence that the scope of Recall #23V881 is insufficient. The defective fuel pump components appear to be present in my vehicle's production batch. I request the manufacturer be compelled to expand the recall to cover my VIN for repair and reimbursement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 24, 2025 · Engine, Fuel system · NY

It has been two years after posting an issue with engine light on indicating the error code p052e which is a known problem on many models mercedes has. This metris van is not a passenger van but a commercial van. It has however the SAME engine and SAME error code as all the models mercedes having this engine. It is stated that it is under warranty by mercedes up to 150k, with the exception of the commercial van. This is ludicrous and a failure to correct a known defect and expecting the customer to pay the bill. It is also disturbing that the federal safety agency does not communicate to the complaint or direct mercedes to FIX the problem. What happened to Quality and Customer care?

Filed Aug 5, 2025 · Engine · PA

A check engine light on a Mercedes-Benz Metris, accompanied by a P052E code, often indicates a problem with the Positive Crankcase Ventilation (PCV) system, specifically the PCV regulator valve or its associated components. This code signals that the Powertrain Control Module (PCM) has detected an issue with the crankcase pressure, suggesting a malfunction in the PCV system's ability to regulate pressure.

Filed May 9, 2025 · Engine · PA

2016 Metris Engine M274 Check engine light, P052E71 Crankcase ventilation valve- Oil leakage- safety is compromised as this damage causes engine failure. The dealer has confirmed multiple oil leaks and other parts and service is required at extensive cost to me. This is the same damage and failure that passenger models with the M274 engine have an extended warranty available to them- my PASSENGER Metris with the exact same engine is excluded from this extended warranty.

Filed Mar 23, 2025 · Fuel system · TN

The pressure relief valve part on our Mercedes van is causing a check engine light to go off with code P052E. It's a known issue on several MB models (GLB, C300, etc.) that this original part wears out and can potentially cause an under-hood fire if oil gets clogged up in the components. To my knowledge there is no routine maintenance that we missed that would be causing this issue. MB has since released a new style of PCV part with insulation wrapped around the hose to prevent condensation build up. It's not possible to get the original stye of that part that is installed on our van anymore because Mercedes knows the part is poorly constructed and will fail. It's a costly and laborious repair (5-7 hrs), yet it seems like they already know it's a widespread and serious safety issue, however there is no recall on it on the 2019 Mercedes Metris as of now.

Filed Sep 12, 2024 · Engine · WI

The check engine light came on, with code P052E indicating a positive crankcase ventilation valve failure. Dealer inspection revealed the PCV valve is sticking and recommended a replacement with a $2100 charge. This is a widely experienced problem with this engine in many Mercedes vehicles, suggesting that the cause is a manufacturer defect.

Filed Aug 19, 2024 · Engine · 52,000 miles · CO

The contact owns a 2016 Mercedes-Benz Metris. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to the local dealer who diagnosed that the crank case ventilation valve had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 52,000.

Filed Aug 15, 2024 · Engine, Fuel system · NY

The Crankcase ventilation valve called (Crankcase Rebreather)comes with a defect making engine light to come on after about an average of 50.000 miles, with a code p052e, preventing passing state vehicle inspection. Feedback from many Metris ownership highlights exact same challenge with engine light turned on at all times. But dealership is charging up to 3.000 dollars to remove their own faulty designed part.