I just picked up 04 e55 with 19 brabus rims, but the tire pressure mal light is on how do i clear it or fix it?

 

Put the correct amount of air and drive it around, then the light will go away unless there is a leak.

 

unless the system has a failure, like my S55 just suffered...

 

He'll find out after he puts the air in. The light will either go off or stay on because he may have a leak or something is wrong with the system.

If the light stays on check you tire pressure manually. If one of them is low check to see if there is a screw or nail in the tire. If you don't see anything put soapy water on the tire and look for bubbles coming up, that will reveal the leak. If no leak bring it to the dealer.