Method for operating a supply system and supply system

A supply system (10;

• 20), in which configured to supply components (11, 12, 13, 14) of a drive system (9) with lubricant and/or coolant, the supply system comprising:
• an electrically powered feed pump (15);
• a mechanically driven feed pump (16) having a drive input;
• and
• a drive output of a motor vehicle drivetrain that includes the supply system, the drive output coupled to the drive input to drive the mechanically driven feed pump (16);
• wherein during normal operation of the drive system (9) the electrically powered feed pump (15) in the supply system (10;
• 20) is configured to deliver lubricant and/or coolant to the components (11, 12, 13, 14), and
• wherein, during a special operating mode in which the electrically powered feed pump (15) is switched off while the drive system (9) is still operating, the mechanically driven feed pump (16) alone is configured to supply at least some (11, 14) of the components (11, 12, 13, 14) with lubricant and/or coolant,
• wherein when driven by the drive output, the mechanically driven feed pump (16) delivers only a minimum quantity of lubricant and/or coolant that corresponds to a minimum demand required for supplying the lubricant and/or coolant to at least those (11, 14) of the components (11, 12, 13, 14) concerned.