Quote:
Originally Posted by HighlandPete
That sounds as if it is some sort of brake servo or ABS module activity.
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+1 vote from me about it being something related to a brake servo imo... Seems to be a pre-system check/prime that's performed on power-up (anecdotally more-so if the car's been in a 'deep-sleep' state) - am sure there's a logic as to when this is done, but it's also fairly random (~1 in 20 startups). Had me worried the first couple of times it happened, but i've learnt that it's just one of those quirks.
Happens before you even touch the ignition button and can be quite a startling sound coming from a vehicle that's pretty much in all ways quieter and more refined than the F10.