The incident happened in Bay Shore, at the Pep Boys on Sunrise Highway, sometime overnight Wednesday, Nov. 6.
Suffolk County Police said Stephan Edwards was in the parking lot working on a Kia sedan that was raised on a jack when the vehicle fell on him.
The 30-year-old Edwards, of Margate, Florida, was discovered shortly before 9 a.m. Thursday, Nov. 7. He was pronounced dead at the scene.
A police spokesperson told Daily Voice Edwards was not an employee at the business.
Detectives are asking anyone with information in the case to contact Suffolk County Police at 631-852-6392.
Click here to follow Daily Voice Shoreham-Wading River and receive free news updates.