Probably many of you had this problem before cause its quite common...
Bought my rallye and noticed the heater of the rear window is not working..there is power on the switch (light) and when pressed it I could hear the relay "clicked"..happened before with my other 306, its a relay problem..little bit of soldering and the heater is working again!

1st pic-clearly see the sign of a bad contact



2nd-3rd - no contact at all between the "leg" of the relay and the pcb..