Patent ID: 8919370

Claim:
A tank ( 10 ) for storing a liquid active ingredient ( 3 ) for operating a unit of a motor vehicle, with a container ( 1 ) and at least one functional element ( 11 , 28 , 29 ; 18 ), which protrudes into the container, for influencing and/or measuring a physical variable of the active ingredient ( 3 ), characterized in that the functional element ( 11 , 28 , 29 ; 18 ) is provided with at least one means ( 25 , 26 ) for protecting against abrasion in the event of mechanical contact ( 19 ) with an adjacent tank component ( 7 , 11 ), the functional element being flexible and/or bendable and being placed onto the tank component, wherein the at least one means is a hose that has at least one hole such that the active ingredient can pass as far as an outer wall of the functional element which is held spaced apart from the adjacent tank component ( 7 , 11 ) by the hose.