2023 Volkswagen Jetta

The follow failed module faults have REPEATEDLY FAILED: U010400 lost communication with cruise control module, U112100 databus missing message & U112300 databus error value received, C110BF0 Adaptive Cruise Control Sensor, C111207 Haldex Clutch Pump Mechanical Malfunction, P030400 Cyl 4 Misfire, ***P085000 Park/Neutral Switch Input Circuit Open or Short***, U105400 Information Electronics Control Module 1 No Communication. I’ve had it repaired once by VW. Been at dealership multiple times for all of these issues. Currently, they are not helpful. My car does not recognize PARK, it thinks it’s in NEUTRAL.

The contact owns a 2023 Volkswagen Jetta. The contact stated that upon coming to a complete stop on an incline, the hill start assist system activated but activated the brakes for an extended period causing the contact to stall the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to diagnose a failure. The contact was informed that the system was functioning as intended. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 0.

The contact owns a 2023 Volkswagen Jetta. The contact stated while operating the vehicle, the check engine warning light remained illuminated. Upon inspection, it was discovered that the engine coolant reservoir was empty. The contact added coolant to the coolant reservoir, but one week later the failure reoccurred. The vehicle was taken to the local dealer who diagnosed the vehicle and determined that engine coolant had leaked into the head gasket and that the head gasket and sealant needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 43,000.

What component or system failed or malfunctioned, and is it available for inspection upon request? The components that failed or malfunctioned include the rear brake system and the EVAP (Evaporative Emission Control) system of my 2023 Volkswagen Jetta SE 1.5T FWD. Both components are available for inspection upon request. How was your safety or the safety of others put at risk? The safety risks include premature wear of the rear brakes, which could lead to reduced braking efficiency or failure, especially under emergency braking situations. The EVAP system malfunction poses an environmental risk by potentially releasing excessive emissions, and it could also lead to engine performance issues, including stalling or hesitation during acceleration, which may cause hazardous driving conditions. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the issues with both the rear brakes and the EVAP system have been reproduced and confirmed by the service departments at two authorized Volkswagen dealerships. Despite multiple repair attempts, the problems have not been fully resolved. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has been inspected multiple times by Volkswagen service departments, but no inspections have been conducted by the police or insurance representatives. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes, for the EVAP system, the check engine light illuminated repeatedly, indicating a malfunction. The brake issues were not accompanied by warning lamps but were noticeable through audible grinding noises and reduced braking performance, which started occurring within the first few thousand miles after purchasing the vehicle. The brake issue was first reported to the dealer when the vehicle had less than 10,000 miles.

Vehicle has been misfiring at interstate Rt 95 putting driver at very high risk of a crash. This vehicle has been service for this problem and also for a coolant leak 04 times at dealership. They were unable to find any problem. Right now, this vehicle is at dealership, and they said, engine has a blown head gasket (several vehicles from VW model Taos and Jetta from 2022 and 2023 has the same issue.).

This is now the second time this has happened on my brand new 2023 Jetta SE. The vehicle only has 1831 miles on it. The fault happens when the car is being driven after approx. 15 minutes. EPC light, Check Engine Light, and Yellow Warning Light illuminate. Also sounds like a misfire when limping off the road. Codes read at dealer are P0304, P0363, P1D74, and P1D75. All of these codes relate to Cylinder 4 misfire. Car is driven only at highway speeds, since it is a commuter car. This happened on 2/16/2024 and 2/22/2024. I attached PDFs of the Service Invoice from the first instance. I also attached a PDF of a NHTSA file containing a list of VW vehicles that are having the same issue, with the same engine.