When the brake pads wear thin, this sensor causes a warning light to indicate that the brakes need to be replaced. Once triggered, the Brake Pad Sensor must be replaced. The front brake system uses one of these sensors in the one of the front left brake pads.
This part is listed by BMW as BMW part number 34356870351 (34-35-6-870-351) and is described as Bowa OEM Brake Pad Sensor, Front Left, for G01/F97 X3 30i, M40i, X3M (2018, 2019, 2020, 2021, 2022, 2023+) and G02/F98 X3 30i, M40i, X4M (2019, 2020, 2021, 2022, 2023+).
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
X3 Series
F97 X3M (2020+) > X3M
X3 Series
G01 X3 (2018+) > X3 M40i
G01 X3 (2018+) > X3 xDrive30i
X4 Series
F98 X4M (2020+) > X4M
X4 Series
G02 X4 (2019+) > X4 M40i
G02 X4 (2019+) > X4 xDrive30i
