Engine light come on at about 43000 miles. Code scanner is p052e. Upon research is a common problem with Mercedes and approximately $2000 dealer repair.

- Georgetown , KY, USA

Error code P052E, relates to Crankcase Ventilation System, that requires replacement. My vehicle is under 55,000 miles and the part should last the full life of the engine. This is faulty part that the dealership requires over $4,000 to fix.

- Naperville, IL, USA

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 [XXX] GLA 250 4 MATIC 2016 VIN [XXX] CLA 250 MATIC I WAS TOLD BY A MERCEDES SERVICES ADVISOR 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 VENTILATION MALFUNCTION - CAR WILL NOT PASS EMISSION 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 the accel INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA),

- Atlanta , GA, USA

I noticed for the last several weeks my car sometimes hesitates when I start the engine. I hadn't looked into it and wasn't sure what it could be because I changed my battery less than 2 years ago. I hoped it was a fluke or do to the increasing cold weather. Also the car occasionally shudders and hesitates when I increase and decrease speed and one or two the radio shut off on it's own. This morning, the automatic windshield wipers came on even though it was not raining and my windshield was not wet. This lasted for a few minutes before it stopped on it own. Then I drove about a mile and was at a stop light. When I eventually tried to accelerate, I wasn't able to and it was then that I noticed my car had slipped to neutral on it's own. I was on a busy road when this happened. The car also restarted on its own and I was able to shift to drive and continue driving. Thinking this was a fluke or perhaps a battery issue, I continued to drive for a few more minutes and again I found myself at a stop light and again, the car slipped into neutral. I quickly put my emergency lights on and restarted the car. The radio came but on, but I noticed the A/C did not come back on. I didn't bother turning it back on. I was able to drive 23 miles to my destination with no other incident. The majority of the 23 mile drive, after the car had stopped 2 times, was highway driving, so I did not need to stop much.

- Washington, DC, USA

)N 6/15/20 while driving to a doctors appointment on the highway, my engine suddenly overheated and it warned me to pull over immediately. The vehicle had 37,800 miles on it. On diagnosis, it was found that a valve in the water pump had seized from a coolant leak, preventing it from opening and circulating coolant into the engine. Unfortunately, the car was just out of warranty.,

- Utica, NY, USA

There was an issue with the water pump, mb has since replaced the product with a new one because of issues with the old style not working. My car is just over the warranty and has on 10,270 miles on it and is now experiencing the overheating issue (warranty ended December 2018). If the problem with old style water pump was known why not notify customers? when the vehicle is on, driving or running stationary the engine overheats.

- Germantown, MD, USA

Immediately after entering a freeway from an on-ramp at approximately 60mph, warning chimes for collision indicator deactivated came on, auto-dampening of engine speed occurred, and auto-braking occurred. No vehicles were directly in front of vehicle, nor near enough to side or rear cause proximity sensors to activate. The only remedy for this was to limp to the side of the road (in rush hour traffic), turn off car, and then turn back on. All indicators and warnings were cleared upon restarting vehicle. This is the second time this has happened within 12-months.

- Leander, TX, USA

If something in the roadway hits the oil pan it will crack and causing the engine to lock up without notice. It seems there should be something protecting the oil pan preventing this from happening and more time notifying of low oil should be allowed to move off the road way and shut the engine down. I also question the strength of the material or design of the oil pan.

- Metairie, LA, USA

If something in the roadway hits the oil pan it will crack and causing the engine to lock up without notice. It seems there should be something protecting the oil pan preventing this from happening and more time notifying of low oil should be allowed to move off the road way and shut the engine down. I also question the strength of the material or design of the oil pan.

- Metairie, LA, USA

The contact owns a 2015 Mercedes-Benz Cla250. While driving 75 mph, the vehicle independently began to decelerate and lost power. The vehicle was towed to the dealer where it was diagnosed that the throttle actuator failed and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 12,000.

- Tewksbury, MA, USA