2016 Mercedes-Benz CLA250 engine problems

Filed Apr 23, 2025 · Engine · 116,000 miles · NJ

The contact owns a 2016 Mercedes-Benz CLA250. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed with a failed thermostat. The contact was informed that the thermostat needed to be replaced. The vehicle was not repaired. The vehicle was driven to the residence. The contact performed an inspection on the vehicle and determined there was a melted hole in the air intake valve. The contact stated that the dealer had not provided information of the condition of the melted air intake valve. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 116,000.

Filed Feb 12, 2025 · Electrical, Engine · CO

Check engine light with error code P052E. From my research, this is a very common issue with this engine and one that either has been recalled or is planning to be recalled. According to some online forums for Mercedes Benz, Mercedes is being sued over this problem and has issued an extended warranty on certain models because of how common this problem has become. The list of models needs to be expanded to include other models experiencing the same problem.

Filed Jan 27, 2025 · Electrical, Engine · TX

Vehicle Performance Issues - Detailed Timeline [XXX] •First issue occurred: the car wouldn’t start at a store. Engine turned over, failed to start. •After sitting overnight, it would start but stall after 10 minutes of driving. •Parked the car and began using alternative transportation. •Diagnostic tests by three mechanics revealed the following codes: oP0087: Fuel Rail/System Pressure Too Low. oP052E: Crankcase Ventilation (PCV). [XXX] •Picked up the car from Midland Mercedes after repairs. Paid $3,069.16 for crankcase ventilation service. •Mercedes Customer Summary Report had no reference to any fuel-related issues or the P0087 code. •Drove 10 minutes to a gas station; the car wouldn’t start, repeating the same issue of why I brought it in to have repaired. •Returned to the shop; Said a New Code came up and replaced the fuel pump: oCost of part: $670.47 (no labor charged). I refused to pay $2200! [XXX] •Finally after 3 months! I got my car and drove back to San Angelo on half a tank, avoiding stops to prevent starting problems. I now had PTSD! •Filled the tank upon arrival; no issues that day. [XXX] •On the way to work, turned on the heat and noticed: oA strong gas odor inside the car. oThe radio volume control wasn’t working, and the ECO mode indicator wasn’t functioning as usual. [XXX] Filled the gas tank halfway to reduce the gas smell. •1st start up cycle immediately after getting gas, no issue. •2nd start up cycle , the dashboard lights started flickering and all indicator lights came on. Traction control warning along with message to check the owner’s manual. Can not accelerate. Check engine light stays on. •3rd cycle start up, all lights turned off except the check engine light. •4th cycle start up, no check engine light This occurs every time I get fuel. I only get $10 at a time. Noticing the pattern, I coded the car. A new code came up. •P2187: System Too Lean at Idle (Bank 1). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 13, 2024 · Engine · TN

My car has slipped into neutral twice while driving. Once while turning left from red light and once while sitting still at red light.

Filed Sep 6, 2024 · Engine · 50,000 miles · MI

The contact owns a 2016 Mercedes-Benz CLA250. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the regulator valve had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was approximately 50,000.

Filed May 16, 2024 · Engine, Fuel system · GA

I HAVE 2 MECEDES WITH THE SAME ISSUE PER MERCEDES BENZ OF USA INSPECTION CAUSING ENGINE LIGHT TO BE TRIGGERED PER DIAGNOSIS TESTING RAN ON BOTH CARS. 2015 VIN [XXXXX] GLA 250 4 MATIC-P052E71 2016 VIN [XXXXX0 2013 CLA 250 MATIC -P052E71 I WAS TOLD BY A MERCEDES SERVICES ADVISIOR THAT BOTH CARS HAVE THE SAME ENGINE FOR A 2015GLA AND A 2016 CLA - BOTH Due to both cars stalling in traffic on multiple time when driving I took both to the shop to run further testing to discover both had the same engine light trigger which is the CRANKSHAFT (AKA) OIL SEPERATOR (AKA)INTAKE TUBE DUE TO THIS BOTH CARS HAVE SUFFERED AN ISSUE WHEN TAKING EMMISSION TEST - MERCEDES DIGNOSIS TESTING CODES -P052E71 - CRANKSHAFT VENILATION MALFUNCTION - CAR WILL NOT PASS EMMISSION TEST AND THIS PART DEFECTS ALSO CAUSES CAR TO STALL THAT CAN POSSIBLE CAUSE ACCIDENT THIS PART COMPLETE REPAIR COULD COST UP TO $2500-$3000 FOR PARTS AND LABOR PART NUMBER -270-090-07-00 (CRANKSHAFT) THE ENGINE LIGHT ISSUE TRIGGERED BY CRANKSHAFT AND WILL NOT PASS EMMISSION TESTING DUE TO THIS Description of this part below: Crankcase Ventilation is the process of venting or removing blow-by from an engine's crankcase to prevent excessive pressure build-up within the engine. Blow-by gases are mixed with oil mist and other contaminants that can harm an engine's internal components and contaminate the environment. How does the crankshaft ventilation work- When the vehicle is moving, airflow across the open end of the tube creates suction (a "draught" or draft) that pulls gases out of the crankcase. To prevent too much vacuum being created, the blow-by gases are replaced by fresh air using a device called a breather. The breather is often located in the oil cap the engine misfires, you may have trouble getting your vehicle up to speed. Misfires often happen when your vehicle is under load while accelerating. This can result in slow or sluggish acceleration or a jerking motion while pressing down on acc

Filed Mar 7, 2022 · Engine · SC

Code: 052E71 - Valve for crankcase ventilation has a malfunction or block. This car has 48, 182 miles and is requiring $2000 worth of repairs.

Filed May 24, 2021 · Engine · NJ

Automatic start /stop failed on highway car would not move, almost caused an accident. This has been repaired twice and now it has happened again. CLIENT STATES VEHICLE CUTS OFF AT IDLE Cause: . Correction: 540650 ON-BOARD POWER SUPPLY VOLTAGE MAINTAIN (WHEN CHECKING/ TESTING AND TROUBLESHOOTING) Tech Number: 20 Labor Type: WNC8 541011 PERFORM QUICK TEST Tech Number: 20 Labor Type: WNC8 275002 REPLACE ELECTROHYDRAULIC CONTROLLER UNIT OF DUAL-CLUTCHTRANSMISSION Tech Number: 20 Labor Type: WNC8 272388 REPLACE CONTROL UNIT OF DUAL- CLUTCH TRANSMISSION (ELECTROHYDRAULIC CONTROLLER UNIT REMOVED) ON VEH. WITH Tech Number: 20 Labor Type: WNC8 540991 PROGRAM AND CODE CONTROL UNIT .................... (AFTER QUICK TEST) Tech Number: 20 Labor Type: WNC8 271254 CHECK/CORRECT OIL LEVEL OF DUAL-CLUTCH TRANSMISSION (AFTER LEAK TEST) Tech Number: 20 Labor Type: WNC8 271048 ADAPTATION PERFORM (AFTER REPAIRS)

Filed Jan 28, 2021 · Acceleration, Electrical · 62,000 miles · TX

While merging onto the freeway on 1/22/2021 the car's dashboard displayed "collision prevention assist plus inoperative " and the check engine light come on. When this happened, it prevented me from accelerating the car by pushing onto the gas pedal. This caused the car from behind to almost rear ended by car. I was able to drive onto the shoulder of the freeway and exit the freeway. I have taken this car to the mercedes dealership for repair but it is an ongoing issue even after various parts have been replaced.

Filed Dec 28, 2020 · Engine · 88,000 miles · AL

My 2016 mercedes-benz c300 after undergoing the recommended maintenance via the mercedes-benz dealer, while driving down the public road lost power, the lost of power with no warning to me or any other drivers around me, the vehicle went from 45 MPH to 10 MPH this was due to a decentigrating piston, the vehicle manufacture advertised that the vehicle would cut power to protect the engine from causing it self further damage, this seemed like a great safety feature until it just happen, I had no control over the vehicle, it just seemed to take on a life of its own, the vehicles behind or adjacent to me had no warning that the vehicle would decrease the speed, so I had to muscle the care out of the swirling traffic, I was devistated that my car caused me such fear and dealing with the fact that the car could have killed me or some one else near me, I had the vehicle towed to the local dealer who had serviced the vehicle since it was new and the dealer explained that the piston in the internal combustion engine had decentagrated thus causing metal shavings to be distributed throughout the rest of the engine, and I would be charged for the total cost of the repair of the engine. It appeared that this should have been disclosed to the owner of the vehicle or placed in the owners manual, but the only response from mercedes was we change out these engines all the time they always blow engines, you can call mercedes-benz advocacy to discus the warranty from which I never receive a response. If the manufacture places know bad parts in to a vehicle and sales it to the public, then that manufacture should have to pay for the repairs of the customers vehicles either individually or thru a recall process.