Check Brake Linings caution???

[X5night4.4]

I am new to this site but have been using its information for quite some time. I love it. But i need to participate now.

I Washed my E53 yesterday after the wash when i started it to move it back into the garage.

My Warning on my Computer said to check the linings,. I know why it did it, I just cannot find a way to reset the Computer to get rid if it. I tried the various methods posted on this site. None with any luck. Its an 2005 x5 with every option possible. except running boards and cold weather package. What do i do besides pay the stealership 75 bones to do it for me.