xx3- the red brake light in the dash has two functions- tell you the parking brake is set, and tell you the brake fluid is low. The pad wear sensors only tell you that it is time to inspect the pads for wear.

Btw, with only one sensor per axle, it is possible to damage the rotors before the sensor turns on the message- ask me how I know!!

__________________
Dave

'05 325xi
'10 E70 35d
'85 911 Carrera
'66 911 Work in progress
'91 Chevy C1500
'95 Jeep Cherokee
‘18 Jeep JLU