Quote:
Originally Posted by SYT_Shadow
Nezzynez
I've done 7 S65s and only on the first one did I remove the fuse... what a mistake. Never again.
|
To elaborate on the fuel pump system on these cars, it's not a simple 12v motor and fuse like other cars. These M3 and M5 have brushless motor pumps and controllers that communicate with the DME on their own CAN line. The pump runs at varied speeds to provide whatever volume is demanded by the DME.
Disconnecting the fuel pump fuse causes a mess of issues and faults with the DME.