He is said to have used his left hand to slap a 25-year-old woman’s left buttock in a unit of a building in Bukit Merah at around 9pm on July 7 that year.
Mr Lim, who was the commander of Tanglin Police Division about 10 years ago, had left the police force by then.
The former policeman, who was represented by lawyer Adrian Wee from Lighthouse Law, declined to comment.
Mr Lim held various positions in the Singapore Police Force between 1990 and 2010 before joining security solutions provider Secura Group, where he was chief executive.
He left the firm in October 2017, citing the pursuit of personal interests as the reason.
Offenders convicted of molestation can be jailed for up to three years, fined or caned, or receive any combination of such punishments.