Abstract Introduction Today it is estimated that approximately 30–40% of the cars in U.S have seat warmers, with the demand increasing. Unfortunately, these seat warmers do not have any established guideline of safety, leading some warmers to stay on for extended periods of time and reach temperatures that far exceed the human skin tolerance levels. Magunia et al. first described a patient with full-thickness burns in 2003, however in the time since this publishing, minimal factory standards have been instituted. We report a unique case of a neurologically impaired patient who suffered posterior thigh full-thickness burns secondary to a car seat heater. A delay in her treatment led to the need for surgical intervention. We also tested car models 2014 and newer to establish whether modern cars still present a danger to vulnerable populations. Methods Testing of 10 cars, models 2014 or newer, with a contact surface temperature thermometer independently calibrated. Testing in 21°C ambient air. Four tests, average and highest temperature both recorded. Results Maximum seat temperatures range from 35°C - 53°C. Average seat temperatures range from 34°C - 49°C. Conclusions This case illustrates the dangers and risks presented with car seat heaters. Cases such as this, still happening after the voluntary NHTSA mandate, emphasize the need for heightened physician awareness and mandatory factory standards. In agreement with the National Highway Traffic Safety Administration (NHTSA) statement, under no circumstances should a seat heater top 43°C. We tested 10 cars and found 7 of these cars exceeded the 43°C. In addition, all seat heaters should include self-timers. In our unique case, the patient had no awareness the seat heater was on, suggesting the need for a clearer alert on the dashboard. Health-care providers should also help educate patients about the potential dangers of seat warmers, especially in vulnerable populations. Applicability of Research to Practice This research highlights the potential dangers car seat heaters present to consumers. Mounting evidence, including lawsuit and case reports, show car seat heaters far exceed voluntary standards set by NHTSA. These temperatures put patrons at increased risk of life-altering burns. Furthermore, these are not “faulty” heaters, these heaters are functioning as the manufacturers fabricated them. We also report seat heaters have not followed suggestions outlined by Manguina et al in 2003, such as dash alerts, automatic turn off timer, and other safety features. The first step is raising awareness to healthcare workers so proper warnings can be made to patients, especially those who are neurologically impaired.