Bonjour
ca doit etre ca
https://fuseandrelay.com/volkswagen/b7passat.html
1 Starter relay 1 (643) – only for vehicles with start-stop system
2 Glow plug control unit (457)
3 Not used
4 Low power relay (53)
5 High power heating relay (100)
6 Starter relay 2 (489) – only for vehicles with start-stop system
Au revoir
OS