*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
The check engine light on the vehicle came on and remained on each time the vehicle is running. An independent service center in an effort to fix the problem, ran a diagnostic test and found that the check engine light is on due to two codes. (1) P052E-71 crankcase ventilation system has a malfunction (PCV has failed, needs tube assembly). (2) P06DA-00 oil pump solenoid circuit failure. Additionally, the independent service center found a Mercedes-Benz USA, LLC News Channel Update Warranty to Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers dated August 25, 2023 regarding Emission Extended Warranty - Intake Line Assembly. Specifically, the…
Aug 5, 2026Electrical system
What component or system failed or malfunctioned, and is it available for inspection upon request? The instrument cluster display intermittently failed, either showing incorrect information or going completely blank while driving. Yes, the component is still installed in the vehicle and available for inspection upon request. How was your safety or the safety of others put at risk? When the display failed, I was unable to view critical information such as vehicle speed, warning lights, and engine performance data. This posed a significant safety risk, especially while navigating traffic. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the issue…
Jul 20, 2025Power train
Component or System That Failed or Malfunctioned: The component that failed was the partial-load ventilation valve, which is part of the engineâs crankcase ventilation system. This valve is responsible for regulating airflow and pressure within the crankcase during partial engine loads. A malfunction in this valve can lead to increased engine pressure, oil leaks, and potential damage to engine components. The component is still available for inspection upon request. Safety Risk: The failure of the partial-load ventilation valve put my safety, and that of others, at risk in the following ways: â¢Engine stalling or reduced power while driving, especially during acceleration, which…
May 22, 2025Fuel/propulsion system
Approximately 6 months I noticed my vehicle began to emit an odor and is not responsive immediately when I press on the gas. During this time period a yellow check engine light appeared on my dashboard. My local mechanic recommended Christopher Motors in Warwick Rhode Island and German Motors in Providence, Rhode Island, who specializes in Mercedes. I scheduled an appointment and took the vehicle to Christophers Motors to get a diagnostics check for $130. Christopher motors did a diagnostic check and revealed that the car needs a crank shift ventilator that will cost approximately $1500-$1800 and could not guarantee if the service engine light would be removed. During this time I received a…
Feb 13, 2024Electrical system
1. What component or system failed or malfunctioned, and is it available for inspection upon request? The trunk latch system failed, causing the trunk to open unexpectedly. Yes, the component is available for inspection upon request. 2.How was your safety or the safety of others put at risk? The trunk opened while driving on [XXX], creating a significant blind spot. This occurred during high traffic conditions and forced me to move to the outer lane, which posed a risk to my safety and the safety of other drivers on the road. 3.Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the problem has been reported by many other owners as well, suggesting a…
Jun 3, 2024Visibility › Sun/moon roof assembly
The contact owns a 2017 Mercedes-Benz CLA250. The contact stated while driving 60 MPH, the contact heard a loud pop inside the vehicle. The vehicle was steered to the side of the road and the contact observed that the sunroof panel was missing. A Police Officer passing by stated that he observed that the panel had detached and land on the street. The vehicle was taken to a dealer where it was diagnosed that the panel needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 90,000.
Jun 25, 2024 · 90,000 milesStructure
The contact owns a 2017 Mercedes-Benz CLA250. The contact stated while driving 68-70 MPH, the front roof panel separated from the vehicle and flew off. The contact related the failure to NHTSA Campaign Numbers: 23V854000 (Structure) and 21V197000 (Structure). The dealer was notified of the failure and informed the contact that the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 134,000.
May 6, 2024 · 134,000 milesPower train
Just replaced water pump and still need to replace positive Crankcase ventilation system hose
Apr 1, 2022
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.