2015 Volkswagen GTI: engine overheating

Filed Jan 10, 2023 · Engine · SC

What component or system failed or malfunctioned, and is it available for inspection upon request? Coolant leak from very known area which is the water pump. How was your safety or the safety of others put at risk? If leaks to much it can cause the car to run very hot and have to pull over. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes most dealers do say it is a common problem. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No

Filed Sep 8, 2022 · Engine, Fuel system · FL

Vehicle started to show intermittent coolant gauge fluctuation with simultaneous loss of cruise control function. The coolant gauge would show cold, then hot. After visiting a dealer, a coolant leak was identified from a crack in the Thermostat/Water Pump housing along with corrosion in the coolant bottle. In addition, the trunk latch failed, likely from a faulty windshield washer fluid valve leaking onto the electrical equipment. All parts were replaced. Within another 3 months the fuel pump failed and needed to be replaced. All parts were repaired at a Volkswagen Dealer. The overheating of the engine and failure of the fuel pump could have caused engine failure and the car to lose immediate power, causing a fire or crash. The faulty rear door latch could have caused the door to open while driving. All of these issues occurred without warning. Check engine light, EPC and disabled cruise control lights came on at the time of the problem. The vehicle also restricted the speed of the car and maximum RPMs allowed.

Filed Jul 18, 2022 · Engine · PA

There is an issue with the thermostat housing that causes coolant to leak out. This can cause the water pump to fail or if enough of the coolant leaks it can cause the engine to over heat and fail. The Thermostat housing is totally sealed so this is a manufacture defect that happens on the make of my car and should have a recall on the part. There were no warning lights or indicators to let me know of this issue. I brought the car in to my local Volkswagen dealer (dealer of purchase of the car) for another recall to be serviced and I was informed of this issue and need to have it fixed or risk having major issues with the car. I checked online and found MANY other car owners with this same issue so it seems to be systematic and a failure in the part in question.

Filed May 19, 2022 · Engine · VA

The coolant shutoff valve/water pump has failed twice in a little over 13,000 miles. The first incident caused the engine to overheat and go into "lump mode" on the highway and would not go over 45 mph. In the 2nd incident, the coolant shutoff value because stuck in an open position, resulting in poor gas mileage and an engine that takes much longer than normal to reach operating temperature. Problem has been confirmed by the dealer that performed all scheduled maintenance. The component has not been inspected by the manufacturer, police, insurance or others. Warning Lamps: I was not the driver during the first incident. The 2nd incident, the engine warning light came on within a couple of days of a major maintenance at the dealership.

Filed Dec 11, 2021 · Engine · MI

Electronically controlled thermostat failed stuck closed on December 10, 2021. Vehicle had 63814 miles on the odometer. This is a common, known problem with this make/model. Engine overheated in stop and go traffic which caused limp home torque reduction. When traffic resumed there was a potentially dangerous situation because vehicle could not accelerate as quickly as expected by following drivers. There is a design flaw in that the thermostat should fail stuck open, and not stuck closed, to ensure adequate vehicle mobility to avoid a potentially dangerous situation. Additionally, this component is an On-Board Diagnostic Device belonging to the emissions control system. Failure should be covered under the federal emissions control warranty.

Filed Nov 16, 2021 · Engine · MN

The heat in my 2015 GTI Autobahn only blows warm air out of the drivers side when heat is on for both sides. The VW dealership recommends a new thermostat, water pump, and heater core, and blend door. For now, I'm stuck with having a semi warm vehicle and the possibility of engine overheating while on the highway. With the coolant and thermostat being one of the vital parts of the vehicle, its upsetting for such a new vehicle to have such a common problem of needing a new water pump across the board. These types of imperfections in design and quality control need to be addressed due to the shear amount of people needing coolant related issues resolved on their own dime. Do better VW.

Filed Nov 8, 2021 · Engine, Transmission · NJ

Plastic Thermostat Housing Failure-- Cracks and leaking coolant. While getting an oil change done at a local Volkswagen dealership, the mechanic pointed out that there is a coolant leak and showed me where the leak is coming from (Thermostat housing/water pump) The coolant is slowly seep out of the crack on the underside of the thermostat housing, I have been adding coolant every other week. As the loss of coolant often trips the low coolant warning if the level isn't maintained. I feel like I'm not the only one with this issue, after reading online Volkswagen community. Many 2015-2020 GTI owners are also having the same problem. The car overheated couple times when stuck in New York traffic, I would like Volkswagen manufacture to address this issue and give all the GTI owners an explanation to why their part fails less than a few years of ownership.

Filed Feb 18, 2021 · Engine · 37,000 miles · CA

Waterpump/thermostat housing covered in dry coolant, leaking due to warpage of the plastic parts used my volkswagen. Coolant needs to be topped off every 3 months, vw said they didnt find anything wrong. Problem is getting worse as the parts fail and will lead to catastrophic failure and damage/overheating to the engine.

Filed Sep 16, 2020 · Engine · IN

Coolant leak and strong smell after driving the car since it was new. Gradual coolant loss in the reservoir. Vw redesigned the thermostat housing and water pump after rampant 2015 model year failures.

Filed Apr 3, 2020 · Engine · 33,000 miles · IL

Coolant leaking requiring thermostat housing replacement as well as new sensor and new water pump.

Filed Oct 2, 2019 · Engine · 88,000 miles · CT

2 years after purchasing my car brand new the coolant level was low. After calling the dealership they instructed me to top off the reservoir with distilled water. In february of 2019 I had the car in for general service including a coolant flush at a private, licensed, vw mechanic. He discovered my waterpump/thermostat housing was leaking and likely had been for a long time. He replaced the assembly and filled the car with new coolant. In august of 2019 I discovered once again my coolant level was low. Upon inspecting underneath my car I found dried coolant on my oil pan. My mechanic is again telling me the waterpump/thermostat housing is leaking and will need to be replaced. Nothing has been done to the cars cooling system and driving habits have not changed over the lifetime of this car. The mechanic pointed to a poorly designed seal on the thermostat housing where the leak occured. The replacement housing appeared similar in design. This is a widely reported issue, a slow coolant leak, on 2015+ vw golfs, gtis, and rs and in extreme cases can lead to an overheated and ruined engine. The first incident occurred at roughly 60,000 miles, outside of the factory warranty. The 2nd incident occurred at roughly 88,000 miles.