I have a electrical water heater you do not need to use a lighter it suppose to light by pushing a red button it want stay lit why?

Are you sure it an electric water heater and not a gas water heater with a piezo electric igniter for the pilot? If that is the case then it sounds like your thermocouple failed.

i have a electrical water heater you do not need to use a lighter it suppose to light by pushing a red button it want stay lit why?
First off this is almost impossible to understand.

Second, Mark is right, you have a gas water heater there. I suggest you post this in the plumbing forum.