[13] On 30 October 2017, Kim was involved in a fatal car crash that occurred around 4:30 p.m. KST in Samseong-dong, Seoul.

[2] His car overturned and he was taken to Konkuk University Hospital where he was pronounced dead two hours after arrival.

[14][15][16] According to the police and Konkuk University Medical Center, "It seems the accident occurred after he showed symptoms of a myocardial infarction".

However, it was later stated by the police that the autopsy showed no signs of him having a heart attack and that the cause of death was a skull fracture.

[17] Moreover, no traces of alcohol or other toxins were detected in the body and the police investigation revealed no evidence of vehicle defects that could have caused the crash.