u better send it for a check up in car shop...just in case, if
later your dad or you drive, then steering lost control, kenna
accident and fatality, then you regret, tooo late liao. 
check out car also not expensive, only needs 1 day only, so you can
just tell you dad say you hear some leak in the car and decides to
check it out in the car shop....(no mention of knocking of kerb is
required) 