QUOTE(vivakarna @ Jan 29 2015, 10:07 PM)
the pattern is not normal and got sound like 'tak' 'tak', it seem the fan struggling to turn on...need to turn on the engine again to activate the cooling fan.
I think the tak tak sound, probably comes from the exhaust/metal cooling down.
Mine also have this sound, but I'm not too worried, cause some cars do have this sound.
Also, mine also, sometimes the fan doesn't run after shutting down the first time, but the water pump still does run (by hearing the water sound).
Sometimes I just turn it into ON position for few seconds, then turn off ignition ; you don't need to start the engine.
Yes, it will run after that, but sometimes it doesn't. Depends.
Again I'm not to worried, cause like alexei says, probably haven't hit the 90C threshold yet.
It's not compulsory to try run the fan for 2nd time, but just me, I prefer to have the fan running, for assurance feeling, so that the radiator coolant temperature is cooler, so that the turbo gets cooled down properly. (Sometimes I even open my bonnet, in my car porch)
Last time (when I first got the car), I idle the engine for 1 minute, but after that I read certain forum, it's not necessary for water-cooled turbo.