2016 Mercedes-Benz GLA 250: check engine light

Filed Aug 28, 2026 · MI

My 2016 Mercedes-Benz CLA 250 (VIN: [XXX]) has a check engine light for code P052E, which points to a broken crankcase ventilation valve. My car has only 59,000 miles on it, but this same exact part already broke once before and was replaced under the original warranty. Now, the replacement part has failed too. This proves the part is defective and keeps breaking. Mercedes-Benz already knows this part is defective. They gave a free 15-year or 150,000-mile extended warranty to fix this exact issue for free on the C-Class and other longitudinal M274 engine platforms. However, they are actively denying coverage for my CLA 250's M270 engine variant, despite the two vehicles sharing nearly identical engine blocks, matching subcomponents, and the exact same broken part. Because of this unfair engine code technicality, Mercedes-Benz is forcing CLA owners to pay thousands of dollars out of pocket for a recurring problem they fix for free on a C-Class. I urge the federal safety agency to look into this engine loophole and force Mercedes-Benz to include the M270 engine variants under the 15-year/150,000-mile free repair program. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 17, 2025 · Electrical, Lights · CA

My GLA250 Instrument Cluster had been glitching out. The turn signals indicators would go off when the turn signal lights are initiated. The Check engine light, high beam light, and other warning lights come on for no reason, or dim or no backlight, inaccurate gauge readings, erratic gauge needle movement, and even a completely dead cluster. I took the car to the dealership and they said the instrument cluster was faulty and needed to be replace. The car is still at the dealership because they haven't figured out how to program it right. Since the instrument cluster is a vital component of the vehicles safety feature, this should be a recall. I have spent $3500.00 to fix an issue that should not have occurred since the car is only 6 years old. There are several online forums that discuss this very same issue that Mercedes is having with their instrument clusters.

Filed Oct 14, 2024 · OH

Cel p052e positive crankcase ventilation regulator valve performance many owners have had issues with this problem

Filed Jun 14, 2024 · Engine · 88,180 miles · NJ

The contact's daughter owns a 2016 Mercedes-Benz GLA250. The contact stated while driving 15 MPH, the check engine warning light illuminated. The vehicle was taken to a dealer, where it was diagnosed that the crankcase ventilation system had failed. The dealer determined that the engine oil separator needed to be replaced. The vehicle was not repaired. The contact related the failure to an unknown Extended Warranty Coverage. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 88,180.

Filed May 3, 2024 · Engine, Fuel system · 63,000 miles · NJ

The contact owns a 2016 Mercedes Benz GLA. The contact stated that the check engine light had appeared on the instrument panel. The vehicle was taken to a dealer where a diagnostic was performed. The dealer determined that the crankcase ventilation valve had malfunctioned which blocked the actuator. As a result, both the fuel and the oil had started to mix inside the engine which caused the ventilation valve to not close as intended. The contact was given an estimate for repair. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 63,000.

Filed Dec 9, 2022 · Acceleration, Engine · FL

Dec 2- filled car with gas, check engine light illuminated and then three more errors displayed on the dash. See list below. Errors displayed on dash… 1-INOPERATIVE -- SEE OPERATOR’S MANUAL (Shows ABS and skid icons) 2-COLLISION PREVENTION ASSIST PLUS INOPERATIVE 3-ABS CURRENTLY UNAVAILABLE – SEE OWNER’S MANUAL 4-CHECK ENGINE LIGHT ON Later that same day, Dec 2, we started the car but could not get it into Reverse. We shut the car off, started it again, and were able to shift into reverse and proceed. Dec 3rd- we attempted to remove and reapply the gas cap to see if engine light would go off and error messages would resolve. It did not. We did not drive the car that day. Dec 4 and Dec 5th- all above error warnings display all day. Dec 6th- We scheduled a service appt at Mercedes in Sarasota, FL for the 1st avail appt Dec 10th. We were told in writing the car could be driven until the appt and no additional issues should arise. Dec 7th- new error code appears… 5-REVERSING NOT POSSIBLE - SERVICE REQUIRED. This is when the car put our lives at risk. While driving, the car shifted itself into Nuetral. We were unable to get the car into gear as it continued to roll. Having no control of acceleration, we guided the car to the right to allow traffic to pass. We put the car in park, shut down the vehicle, wait 15 minutes, and restart. We were then able to drive forward, but WHILE MOVING, “REVERSING NOT POSSIBLE” reappeared, the car shifted itself into neutral again. We were unable to shift to DRIVE. We shut the car car down again, started it, shifted to drive, but it went into DRIVE 2 only. We drove in 2nd gear until we were safe off the road and home. We towed the car (12/7 evening) to Mercedes in Sarasota FL. Dec 8th: Service dept finds the two front wheel speed sensors failed and caused a chain reaction sequence of events. They referred to the problem as ‘minor’. This is a serious design flaw. We are lucky not to have been hurt or killed

Filed Sep 9, 2021 · Fuel system · TX

The check engine light came on. The code reads Emission. They told me it wasn’t covered at Mercedes