I am guessing you were charged by the garage for work done if so go back and say the fault still occurs and your not happy and request a road test with there master technician and demonstrate the fault to the master tech and they should be able to tell you if this is a fault or if this is a normal operation of the auto head lights, us master technicians are a good bunch of well trained technicians good luck
Peugeot master technician, December 2008