Jeep Wrangler jk unlimited sport S 35K miles. Vehicle wipers will not turn off. Issues where the wipers can be activated with the fog light control and vice versa. The fog lights can come on at random and begin to flash on and off. It is truly frustrating to not be able to turn my wipers off. I went to the dealer and they diagnosed it as both the wiper switch and headlight/fog light switch were shorting and both needed to be replaced. The estimate was $700 for repair. This is rediculous for a 3 year old vehicle and just months out of the 3 year warranty. My guess is that if replace both the switches, the issue will return and then the true cause, which I suspect to be the tipm, will need to be replaced for another $1200.

- Baltimore, MD, USA

It is a known problem that the Jeep Wrangler heater core prematurely clogs and subsequently fails causing less heat from the driver's side defroster vents. During this recent cold snap in Michigan the defroster struggled to adequately clear the windshield of frost and snow and I felt this to be a safety issue. I approached my Jeep dealer and they said "yeah the heater cores go out early" nothing we can do, it will be $1500-2000 to repair as it involves removing the entire dash. I have never had a heater core clog with less than 50,000 miles, this is clearly a manufacturers defect and in cold weather climates cold pose a significant safety hazard. A brief search of the internet leads to a pending class action website further giving proof to the widespread knowledge of this problem. The website is: Https://www.carcomplaints.com/news/2017/Jeep-Wrangler-heater-core-replacement-lawsuit-challenged.shtml I would ask NHTSA to look into this further as not having adequate defrosting capabilities could hinder driver vision out of the windshield and side front windows.

- Grand Rapids, MI, USA

Air from windshield defroster does not reach entire windshield. Air only comes out of small section near the middle on both driver and passenger sides causing visibility problems during rainy weather. Also takes much longer to defrost icy windshield. Issue occurs whether in motion or sitting still.

- Roanoke, VA, USA