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In Reply to: How many brake lining sensors are there? posted by Gerry on June 17, 2001 at 09:38:53:
Basically, you can look at the sensor on the pad. If the sensor is touching the rotor (braking the wire inside) then you will have the brake lining message.
The sensor is just a closed loop. When the loop is opened, the brake warning apprears on the display.
You can disconnect the sensor and install a piece of wire (closed loop). if the message goes away, then either you have a problem on the electrical wiring or your pads don't have much life left and you have to change them.
'89 535i eating a lot of pads