Internal component failures within the BMW 1 Series / 3 Series ABS pump (also labelled Mk100) can cause brake calipers to bind or even be completely inoperable. The ABS pump may store fault codes internally relating to DSC adjustment or even water in brake fluid. Vehicle safety can be affected when these failures occur as brakes may not operate as intended. This type of ABS pump is found on many BMW vehicles built between 2010 to 2018.
Part numbers of affected ABS pumps include:
34516868645 / 34516870919 / 34516875817 / 34516871113 / 34516881174 / 34516875562 / 34516887744 / 34516887513 / 34516891615
Vehicles which the affected ABS pump can be found fitted to include:
- BMW 1 series 2010-2018 (F20, F20 LCI, F21, F21 LCI)
- BMW 2 series 2012-2017 (F22)
- BMW 3 series 2011-2016 (F30, F31, F34 GT, F35)
- BMW 4 series 2012-2017 (F32, F33, F36 Gran Coupe)