2006 BMW M3

[Jake]

Mileage: 135,925

I was driving home on Wednesday evening and out of the blue, earned two new warning lights on the dash. Amber DSC and Brake lights, but no ABS light.



Google reveals the lights can come on for anything from low brake fluid to a total failure of the DSC module. Nice. Thankfully my friend Kyle lives near my office and has INPA software that can read every module on the car. I need to get the software and cable set up personally, too.

We looked at the DSC/ABS module (this car being a 2006 has the later Teves Mk60 setup, versus earlier Bosch). and it had a few errors. I don't quite know how to read the INPA readouts but am trying to research as I have time.

The brake booster has two different "pressure sensors" that I suppose do exactly what the name says, for the sake of the traction control or who knows what. Anyway, INPA reported errors for both sensors, although if I am reading these screens correctly, Sensor #1 last reported an error at 113,779 miles which is before I bought the car:



Sensor #2, however, appears to have reported an error at 135,881 miles, which sounds roughly when the lights came on (I've since driven the car the rest of the way home, into/out of DC once, and to work yesterday before taking that cluster photo):



The sensors are about $150 each, but apparently I can buy a full brake booster setup that includes them both for about $100 on eBay. So, probably going to do that and try just replacing #2 at first.