Google really is your friend for this kind of stuff
Stuff like how to reset the service indicator/read the service codes yourself without the dealer charging you £xxx for the same.
Case in point, how do you lock a Renault with kids (or dog) in the car for safety whilst you nip into a shop, but not have the alarm immediately go off? (Answer, stop engine, then press start/stop 5 times, then get out and lock with remote - simples........Not.).
Cars are becoming more complex than computer networks these days.