Should I replace brake sensor?
As brake pad wear sensors are designed to break, they should be replaced as a matter of course every time new brake pads are fitted. It’s also advisable to regularly inspect the sensors, in between pad changes, and replace where necessary. Over time, heat from the brakes can damage both the wiring and clips.
How many brake pad wear sensors do I need BMW?
How many brake pad sensor does a BMW have? Typically two. One sensor is located on one front brake pad (left front). The second wear sensor is on the right rear brake pads.
How does the brake wear sensor work on a Mercedes Benz?
The brake wear sensors have two wires running to contacts embedded in plastic within them. The sensors are triggered when the pads (and thus the plastic of the wear sensors) wear down to the point where the two wires feeding into / out of them created a CLOSED circuit (or short) through the brake rotor.
When to replace brake discs on Mercedes-Benz R320?
That totally depends on your driving profile and style, as well as brake material I just replace the rear discs and pads on my R320 2008 after over 160K km. The fronts have been good since 70K km and will be good for a few more years. I stayed with OEM. But they come on with about 2 mm of pad left. So no big rush.
What happens when brake pads and sensors are replaced?
Once the pads and sensors are replaced the brake wear warning should disappear almost immediately. You might need to turn the ignition on and off a few times, but that’s it. Oh. 125K miles on what I think were the original pads and rotors, although I can’t be sure because the car had 85K miles on it when we bought it.
Can a brake wear sensor be shorted out?
As I mentioned, the wear sensor is a simple open/short device. An easy trouble shoot by checking them or shorting them out. If your mechanic can’t figure that out maybe you should change mechanic! I included a photo of a new sensor I had in my parts bin. Sensor is actually shorted when new.