-The malfunctioned component is the Positive Crankcase Ventilation. - Vehicle wanted to stall and did not want to accelerate while in the middle lane on the highway with my family. - Yes it has been diagnosis by certified mechanic - The check engine light turned on at the time of the incident and has been turning on and off ever since.
2017 Mercedes-Benz GLC 300 engine problems
37 complaints (36% of all complaints for this car). Typical mileage when it fails: 75,000. 1 crash reported.
- owner complaints
- 37
- of this car's complaints
- 36%
- typical mileage
- 75,000
- crashes
- 1
- recalls
- 0
Which part fails
- Exhaust system1
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
Mercedes-Benz GLC 300 engine problems in other years
Specific symptoms reported on the 2017 Mercedes-Benz GLC 300 engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
What 2017 Mercedes-Benz GLC 300 owners say
Most recent owner complaints, unedited.
I was driving and my engine light came on. I ran the code and it came up as P052E which has to do with the positive crankcase ventilation regulator valve. I’ve heard that this part goes out very often on the Mercedes Benz.
Car stalled in traffic due to code P052E PCV regulator valve
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken back to the dealer and the contact was informed that the vehicle was repaired. The contact stated that the dealer had only reset the codes. In addition, the contact stated that the tire pressure sensor warning light was illuminated. The contact stated that the sunroof latch failed to close as needed using the sunroof power switch. 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 88,100.
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed, however, the vehicle failed to accelerate as intended. In addition, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed with a failed positive crank valve. The contact was informed that the positive crank valve needed to be replaced. In addition, the contact was informed that the repair was covered under an extended warranty program, however, the parts were on backorder. The vehicle was not repaired. The contact stated that the failure began in December 2023, however the warranty repair was completed in September 2024, due to parts being on back order. The vehicle was repaired, however, the failure reoccurred. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed, however, the vehicle failed to accelerate as intended. In addition, the contact heard a loud boom that came from the engine. The vehicle was taken to the dealer where it was diagnosed with a blocked turbo. The contact was informed that the turbo needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 94,000.
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while at a stop light, the vehicle independently shifted to neutral(N) for approximately 5 minutes. The vehicle failed to release from neutral when the driver shifted the gear shifter. The contact stated that the transmission then released from neutral(N), and the vehicle jolted forward. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who was unable to determine the cause of the failure. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 75,000.
Check Engine light came on. Mercedes Benz authorized service mechanic confirmed it is code P052E - Positive Crankcase Ventilation regulator valve issues that can cause engine to seize while driving. Vehicle has always been serviced regularly at authorized dealer service center. Current estimated Repair and replacement cost $9,700+ . Mercedes Benz authorized Service Center informed that the part is backordered and no estimated date available.
Engine light. Told by Mercedes mechanic it is a code P052E - positive crankcase ventilation regulator valve issues that can cause engine to seize while driving. Repair cost $2,500+
After noticing my engine light come on, I had my vehicle checked out, the dealer informed (after spending $250.00) that the problem is the crankcase ventilation and it's a common problem. It seems the oh so familiar crankcase ventilation system is not working. This is a common problem with the GLC300 and Mercedes Benz needs to correct it. The engine is not being ventilated properly and the overwhelming smell of gasoline engulfs the interior of the vehicle. This is putting mine and the life of my family at risk, due to a faulty manufacturer issue. Mecedes Benz needs to obviously correct the faulty parts they use as soon as possible, before someone loses their life.
Engine light - crankcase vent valve issue
Questions about the 2017 Mercedes-Benz GLC 300 engine
Does the 2017 Mercedes-Benz GLC 300 have engine problems?
Owners have filed 37 complaints about the engine of the 2017 Mercedes-Benz GLC 300, 36% of all its complaints, more than any other problem.
At what mileage do 2017 Mercedes-Benz GLC 300 engine problems start?
The typical (median) mileage in owner complaints is 75,000 miles.
Was there a recall on the 2017 Mercedes-Benz GLC 300 engine?
There is no recall for this problem on this model year.
What year does the Mercedes-Benz GLC 300 have bad engine?
The Mercedes-Benz GLC 300 model years with the most engine complaints are 2016 (42 complaints), 2017 (37 complaints) and 2021 (30 complaints).
Other 2017 Mercedes-Benz GLC 300 problems
Electrical 16Fuel system 16Airbags 12Seat belts 8Visibility 8Transmission 7Driver assistance 5Steering 5Brakes 4Tires 3Seats 2Acceleration 1Body 1Lights 1Suspension 1
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