Volkswagen Jetta overheating problems

Filed Sep 21, 2026 · Driver assistance, Electrical · MS

The vehicle’s Forward Collision Avoidance system (Front Assist) and Automatic Emergency Braking (AEB) intermittently malfunction while driving. On at least three separate occasions during clear, dry weather with clean sensors, the AEB system engaged full hydraulic braking unexpectedly with no obstacles ahead—once while utilizing Adaptive Cruise Control and twice while driving manually. This severe "phantom braking" creates an immediate, life-threatening rear-end collision hazard on public roadways. Immediately following these braking events, the digital cluster displays the warning message "Front Assist Currently Unavailable."The vehicle has a documented history of electrical instability, including a prior dealership visit where technicians allegedly attempted to fix power errors by servicing a loose battery connection. However, electrical faults have persisted, culminating in instant, false "Engine is overheated. Safely stop the vehicle!" warnings within seconds of starting a cold engine, as well as non-functional rear seat heaters. These combined electrical faults align with an open powertrain ground failure, as described in the federal safety agency Recall 26V138 / VW Campaign 97TC (loose transmission ground wire causing stray current backfeed through sensor harnesses). The vehicle was towed to an authorized Volkswagen dealership on 09/14/2026 after displaying an instant cold overheating error and remains there for diagnostic inspection. The vehicle and its components remain intact and are available for inspection upon request.

Filed Sep 10, 2026 · Electrical · SC

On 2 separate occasions (in recent 2 months); the car would not restart and error messages would include printing the electrical parking brake engagement. Attempts to reset were futile. Car had to be towed. After 2nd incident, the VW dealership identified that the ground wire for the electrical harness that runs through fuse box and engine was severely overheated resulting in inability to start. There are no recalls on this item; from a safety standpoint, this could happen while driving and a loss of power could result with overheated ground wire condition. This is a potential very unsafe condition and a costly repair item. In comparison, the non-start stop button vehicles have experienced the same condition, and recalls were performed on 2018-2021 Jetta’s. The same exact case, severely overheated ground wires requiring complete replacement of main wiring harness.

Filed Aug 12, 2026 · Engine · SC

The vehicle is currently experiencing steady coolant loss with no external puddles.My vehicle is at 65,000 miles, placing it just 5,000 miles outside of the 60,000-mile factory powertrain warranty. This specific issue matches the exact symptoms of Volkswagen Technical Service Bulletin #2071245 (Service Action 15-23-01) regarding the premature failure of the factory head gasket.Because this is a well-documented manufacturing defect that VW.

Filed Aug 7, 2026 · Electrical, Engine · OR

The vehicle says it’s overheating and will go into limp mode it has also been reported that other 2026 Jettas have had the same issue

Filed Jul 20, 2026 · Engine · AL

Car was started on afternoon of XXX and the Low Coolant alert sound and dashboard light came on. Opened hood and car was completely out of coolant. Took to Royal Automotive, Vestavia Hills, AL on Wednesday XXX to be fixed. Dealer assessment was “PERFORMED COOLING SYSTEM LEAK TEST. THE VEHICLE PASSED TEST. CHECK FOR VISUAL LEAKS. FOUND NO LEAKS, BUT FOUND SEEPAGE AT THE HEAD GASKET. VOLKSWAGEN SAID THIS WAS NORMAL PER 00-26-01 - DIFFERENCE BETWEEN FLUID LEAKAGE AND SEEPAGE. TOP OFF COOLING SYSTEM.” The car was purchased new by me in October 2022 and my warranty expires in October 2022. It has just over 17,100 miles on it. Further, Volkswagen published a Technical Service Bulletin 15-23-01 - Head Gasket Leakage on XXX documenting known problems with head gaskets for my car’s engine. Despite dealership stating the head gaskets is leaking, Volkswagen stated to the dealership it doesn’t warrant repair. I believe Volkswagen should repair at their expense the defect of their vehicle. The dealership acknowledged the head gasket is clearly “seeping” coolant. Coolant shouldn’t be leaking at all from a closed loop system. This is causing a potential safety issue for my [XXX] daughter who drives the car, as when the head gasket fully fails as documented by Volkswagen, the car could be in traffic and put my daughter’s life and other peoples lives in jeopardy from a blown engine or an overheated engine. It’s unacceptable that Volkswagen’s direction is for us to carry around a gallon of coolant and constantly check the coolant levels because they don’t want to fix their known defect. I called Volkswagen customer care and complained. They refused to assist, stating they stand by the dealership’s assessment. I reminded them that the dealership was doing what Volkswagen directed, but that didn’t change their decision. I asked for escalation, was told it was escalated twice and that their decision is not changing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6

Filed Feb 25, 2026 · Brakes · CA

I took my car into dealer at 20,000 miles. They told me rear brake pads and rotors needed to be replaced. At that time, they were replaced under warranty. I took my car into dealer at 34,000 miles for regular service and was told rear brake pads and rotors needed to be replaced. Pads were at 3%, service associate warned me about driving on the highway. I took my car to another location and mechanic for a second opinion and was told "rear brake pads approx. 2mm remaining friction material, and brake rotors are overheated & scored. Not knowing that my rear brakes had worn down to this level in 14,000 miles put myself and other drivers at risk. I had no warning nor did I experience any symptoms in my brakes until I took it in for regular service.

Filed Aug 26, 2025 · Engine, Fuel system · LA

The turbocharger is out. I've had problems with coolant leaking. Mechanic pressurized tank, its fine. While parked coolant disappears, evaporates, idk..Nothing leaking on ground. Now smoke coming out of exhaust. Car has 56,000 miles.

Filed Jul 26, 2025 · Brakes, Fuel system · PA

On steep hills the car automatically holds the brake for a predetermined amount of time, I believe 2.5 to 3 sec. I have a manual transmission car and when its time to move the brake assist won't release no matter what until the time interval is satisfied. The problem this creates is a stall issue. Its hard to coordinate when to depress the clutch and give gas. Too early and you lead to premature clutch wear or clutch overheating. Too late and the car stalls and you have to restart it. This is very because now you have to restart the car and can cause an accident.

Filed May 6, 2025 · Engine · TN

While driving home from work (I travel with the railroad weekly) on Thursday, [XXX], I had my vehicle set on cruise control going west on [XXX] in TN. Out of nowhere, my engine overheated and I lost my coolant. Upon pulling over, I observed no trail of coolant and nothing leaking under my vehicle. I refilled the coolant and made it home. The next morning, my coolant tank was empty again. I took it to my local VW dealership and was informed that the head gasket needed to be replaced. Upon research, I found that on August 17th, 2023, VW put out a Technical Service Bulletin stating that the "Original engine production head gasket design can lead to coolant leaks." This Bulletin did list the engine for my vehicle purchased that year. I was told that "Our manager name is Tim. He informed me that TSB is sent out when they are seeing these issues occur. It is a tech tip to help the technician diagnosis the vehicle. Your vehicle is out of warranty therefore it wouldn't be cover." The engine issue is well known with VW, with a statement that the issue is known. The Bulletin also advised "Improve head gasket design and coating as of Engine Number DNKA 234 458 July 27th 2023." So there is a fix to this issue and BW refuses to fix the issue at hand and is attempting to charge just under $3,500 for the repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Dec 2, 2024 · Electrical · MN

PTC Heater - Driver side footwell short / overheating Burning smell Climatronic temp set to warm Fan speed on or off Outside air temperature below 35deg fahrenheit Burning plastic and vapor starts filling the cabin within 10 seconds Fear of vehicular fire or related health effects from exposure. No warning codes or lights to indicate an issue.