Engine Degreaser is a good stuff, just spray when ur engines is HOTTT !! wait a while, it will work effectively & then flush with water...taddaaaaa !!!
But dont flush water when its Hot laa, when it until cold & flush..taddaaa
Not good when ur engines are cold.
Nowadays, Many cars do not come with an Audible lock and unlock sound. Not like those days (Beep Beep)... To install after market in a shop, might cost anywhere between RM 80 - 160 just for the beep beep sound...