Date registered: Nov 2011
Vehicle: 2003 CLK 320 Coupe
Location: Beacon, NY
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Not sure I understand.
In BMW products (at least I know, MINI Cooper, specifically) the brake sensors...also one per axle, alternate side...consist of a wire loop to complete a circuit. Ie: the circuit is "normally CLOSED". When the circuit is broken, or the sensor is unplugged (removed...whatever), the warning is triggered. The business-end of the sensor consists of a small exposed wire loop inserted within the pad, that when exposed to the rotor surface via pad-wear, breaks, opening the circuit and must then be replaced (or "cheated" at the connector).
What I think I'm understanding is that the Benz wear sensors work on the opposite principal...triggering the warning only when an exposed wire touches the rotor, thereby completing the circuit to ground ("normally OPEN"). If this is the case, my question becomes what is to prevent someone from simply unplugging the sensor at the connector and calling it done (never to be grounded/triggered again). Also--where the BMW system forces you to replace the sensors once broken, by design--can the Benz sensors be reused?
Last edited by ellcapitan; 03-23-2012 at 09:22 AM.