NOW, after successful CBS Reset, with ignition OFF, remove the jumper and attach the Old, Half-worn Sensor. This TIS schematic shows symbols for wires within the sensor which suggest such a design:Īccording to the person who did such resistance measurements, if you try to re-use a sensor that is at stage 2 (~470 Ohms resistance) and attempt to do the CBS reset, you will NOT be able to reset and will still get warning light, UNLESS you insert a jumper in the Wear Sensor Connector to give essentially NO resistance to the Control Unit, and THEN reset CBS.

The Pad Wear Sensor has virtually NO resistance when new (Stage 1), drops to ~ 470 Ohms resistance when worn half-way (Stage 2) to the 3mm minimum thickness point, and goes 'open-circuit' (Stage 3 which sets warning light) when it wears to ~ 3mm thickness. Here is my understanding related to Brake Pad Wear Sensors, from prior posts on this subject (NOT by my own measurements of resistance of new vs. So if i go to delphi again to try enter different mm ticknes i dont get the same menu and i cant put any new mm data into it, delphi now only show reset option but when i reset i get message that sensors are probably broken/activated and i need to reset them.Ĭan i resolve problem in inpa or istad or what to do? Is this problem something about how many times you can enter correction and i exceded it? I changed brake pads earlier than the brake pads sensors were activated so i didnt have any brake warning light on dash and the sensors wasnt activated at all.Ĭouse i thinked that service interval for brake pads sensors needed to be reset i try to reset it in Delphi program but there i did mistake, the program asked me to entering brake pad thickens in millimetres and i enter 13mm what is the thicknes of new brake pad but it seem that with that enter i did mistake and now different testers show that i need to replace sensors couse they are activated and warning light for brakes is on dash and cant be deleted.

Bmw 2006 e90 reset brake with inpa