I used to work there. Nowadays, no more flat rate parking. The space beside the balai is closed off rd. Best bet is to park your car at the nearby Jelatek LRT station, RM5 per day and take the LRT to Ampang Park.

Otherwise, all nearby parking is either season pass, or follow hourly rate with high maximum charge

Park at KL Trillion. Parking is counted hourly, but max RM12/day, which is decent price considering the area.

But have to walk a bit la to Intermark