Derekco Posted January 21, 2019 Share Posted January 21, 2019 Hi does anyone know what relay 404 does it's 40 amp and I have 4 plugged into fuse box b I swapped them around and my a4 starts better I googled the part no .on onlineparts.co.uk it says it for glow plugs am not sure though anyone got an idea the Bosch part no. 7MO 951 253C Quote Link to comment Share on other sites More sharing options...
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