2017 Volkswagen Golf R engine problems

“I've been experiencing a recurring issue with my vehicle where the EPC light frequently activates. When this happens, the car significantly reduces its speed, making it difficult to drive safely. I've noticed this situation over the past six to eight months, and it typically requires me to pull over. After turning off the vehicle multiple times, I'm usually able to reset it and drive normally again. I'm seeking advice on how to address this problem effectively.”

“Turbo Wastegate actuator rod/flap failure/seizure. VW dealership & Independent service center both diagnosed the issue as a seized wastegate actuator flap/rod. This is due to poor design and is a common issue on all 2015-2020 VW/Audi 1.8l TSI engines. This issue causes intermittent engine codes for "low boost" related codes. P00AF00 and similar codes without warning. A key cycle usually temporarily fixes the problem until under boost again. This prevents safe operation of the vehicle while on highways and freeways. Engine shaking & prevention of acceleration and shifting happens after the engine code occur and the car is put into a limp mode. It is unsafe to maneuver the vehicle to the side of the road during these events.”

“Thermostat Sensor Failure causing check engine light P00B7. Vehicle not reading the correct engine temp causing cooling fans to run at 100% and drivability concern. Dealer diagnosed the repair as replacement of the Thermostat/Thermostat Housing quoted at $1,635. The vehicle has not been inspected by any other party other than dealership. Check Engine line appeared, thermostat not reading proper temp, and cooling fans running at 100% speed. This is a well documented problem with my vehicle: https://www.reddit.com/r/GolfGTI/comments/drna5m/mk775_thermostat_housing_issue_and_coolant_loss/”

“Fuel evaporation canister started leaking raw fuel after a strong gas odor was present before hand. The fuel suction pump failed and pressure built up in my gas tank. I was at risk because the presence of raw fuel near ignition sources can cause a fire. Verified at Volkswagen dealership. No warning signs by car when issue first started. Only sign of problem before raw fuel leaking was poor car performance, car stalled and I could not put more than a gallon of gas in the fuel tank.”

“Vehicle EPC light comes on dash. OBD code is "P00AF00 - Turbocharger Boost Control "A" Module". This error causes sudden loss of power and loss of driver assistance (forward collision assist, blind spot assist, cruise control, etc.). Vehicle is available for inspection upon request. Upon checking turbo charger, the wastegate actuator arm is seized up, keeping the wastegate from functioning properly, failing to maintain boost pressure and entering limp mode causing sudden loss of power and acceleration. This has happened while on the roadway, attempting to merge into highway traffic, change lanes & pass other vehicles. This caused the vehicle behind me to close the distance very rapidly almost resulting in multiple rear end collisions. The vehicle has not been inspected by others, yet. The only warning that came on was when it first did it. I had a sudden loss of power, a warning beep from the dash and the EPC light illuminated. It fixed itself after a few moments then occured again. It is now stuck with this error and will not operate accordingly.”

“My VW on two occasions experienced coolant / water pump system failures (May 2022 and August 2023), the second of which required full water pump replacement. These are identical to the class action lawsuit outlined on https://waterpumpsettlement.com/ (civil court case Civ. No.: 2:21-cv-11251-MCA-MF), though I am receiving difficulties with the settlement claim for unknown reasons. My vehicles water pump is identical to those outlined in the case, as the pump model numbers and OEM origin are identical. These two incidents posed a severe risk/hazard to both the vehicle and myself due to leakage and loss of coolant putting the car at risk of catatrosphic engine failure. It is becoming apparent that these should amount to a recall as the growing number of incidents keeps increasing.”