-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: check engine light
19 of the 102 complaints about the 2017 Mercedes-Benz GLC 300 describe check engine light.
- owner complaints
- 19
- of this car's complaints
- 19%
- typical repair cost reported
- $2,000
- typical mileage
- 75,000
- recalls
- 0
Is there a fix? 12 service bulletins cover this area of the car. See below
Check engine light by model year
What owners say
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.
Strong gasoline smell coming from the engine bay every morning at start up. I removed protective plastic lining from the under carriage to identify the issue. I identified a lot of gasoline dripping from the top portion of the engine compartment where the High Pressure Fuel Pump is located. There was no warning or check engine lights that alerted of this issue of a gasoline leak. This is very dangerous as it could cause the vehicle to catch fire.
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
The Positive Crankcase Ventillation harness fails and check engine light goes on. Through my research I found that many C class and GLC class with same engine have had similar issues and there was a recall and covered. My particular VIN was not included in the recall but had this check engine warning sign before 50K miles warranty expires. The light always went away but now it has come back on for the third time and not going away. The cost to replace this simple module is mostly labor at 8 hours is around $2,000. I believe this is an emission component and need to be covered under state and federal emission standards warranty. The initial recall with this issue should be involved with same engine and cover all cars and SUV's with same engine. I do believe this is an Emission control device that is regulated by state and federal standards and should be covered under warranty.
Crankcase vent valve pcv engine light on air pollution danger stalling danger
Service bulletins that may apply
- Engine
- Engine
- Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 – Positive Crankcase...
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 Positive Crankcase...
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 – Positive Crankcase...
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
Related recalls
No recalls on record for this model year.
Questions about the 2017 Mercedes-Benz GLC 300 check engine light
Is check engine light a common problem on the 2017 Mercedes-Benz GLC 300?
19 of 102 owner complaints about the 2017 Mercedes-Benz GLC 300 (19%) mention check engine light. The model year with the most reports is 2016.
How much does it cost to fix check engine light on the 2017 Mercedes-Benz GLC 300?
Owners who mentioned a price put the repair at about $2,000 (median of 5 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
Is there a recall or service bulletin for this on the 2017 Mercedes-Benz GLC 300?
There are 0 recalls and 12 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2017 Mercedes-Benz GLC 300
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