David Hasselhoff's Ex-Wife: Hit & Run -- Witness Says She Was Wasted

Pamela Bach -- famous for once being married to David Hasselhoff and 2 DUI arrests -- is now accused of slamming into a parked car while drunk.

Law enforcement sources tell TMZ ... the LAPD is currently investigating an incident last Friday night ... when Pamela was driving down the block where she lives and she slammed into a parked car.

We're told an eyewitness says Pamela skidded down the street and pulled into her driveway 5 houses up the block. When she got out she was stumbling and the witness says Pamela was clearly intoxicated.

The LAPD has taken a hit-and-run report and the case is currently under investigation.

This is not Pamela's first brush with the law or another car. She was prosecuted for hit-and-run in 2007 but the case was dismissed. She's also been convicted twice for DUI and served jail time.

Bach tells TMZ ... there's a simple explanation for the latest mishap. She says she was on her way home from the dog park when she dropped her cell phone and as she reached for it she sideswiped the parked car, but insists the damage was minor.

Bach says she drove up to her house and when she walked back down she couldn't find the car she hit ... so she went back home.