That depends on which software version you have, and whether the sensor has been repaired or replaced.
First, are the brake pad wear sensors (front and rear) still giving continuity, or is the wire broken or worn through somewhere? If it's broken, then it needs to be replaced, or just jumpered out at the plug.
If the sensor is good (or bypassed), then later versions of the software will reset the light after getting up to speed and braking a few times (normal riding ought to do it).
If you're still running an earlier software version, then you have to either have the dealer reset it, or get a GS-911
tool to reset it yourself.
And no, there's no easy way to tell what version of software you currently have, besides going to a dealer or hooking up a GS-911 . . .
'13 Dark Graphite Metallic K16GTLD, 24K miles and counting...
'09 Magnesium Beige Metallic K13GT, 60K miles miles and counting...
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#145, IBA# 366, MOA# 111996, SCMA# 24032
All lower 48 states plus Alaska on the K13GT in two weeks . . .
Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...