Mate its as said completely normal. I have 3 Subarus a 92 RS , a99 gen 3 RX and a 2001Gen 3 B4 . They all do it 2 are manual one is auto I time my driving pleasure for 12 seconds allows me to clean up before the tick and in the RX the tick is Followed by the relaxing waterfalls that put me to sleep afterwards Mrs is getting pissed of at me spending so much time in the car by myself at night time tho