Wheel speed/ABS/TPMS sensor advice

1120sjh · 11-08-2018, 12:47 PM

Hello everyone,

First post on these forums!

I've had my 320d M Sport E92 for about six months and love it. However, I'm currently having two issues which hopefully can be solved with one fix.

Firstly, over the past 3-4 weeks my traction control has become a bit erratic, kicking in and slightly cutting the power sporadically when driving at basically any speed. This can be overcome by short-pressing the DTC button (twice I've had to long press to completely disable the traction control but generally this is unnecessary). I've read on forums that this is a tell-tale sign of a faulty ABS sensor.

Secondly, over the past three days my tyre pressure warning light has been coming on all the time. After resetting it on the dash, it only takes about half an hour of driving for the red tyre/exclamation mark warning light to come on. I've checked each wheel every time and the pressures have remained good and constant.

Initially it sounded as though this is a faulty TPMS sensor, but I've just read that UK BMWs don't have these, and the tyre pressure is measured using the wheel diameter from the ABS sensor instead. Can anyone confirm this? If this is the case, hopefully it will mean a proverbial two birds with one stone solution.

Thanks in advance!

mckwong · 11-09-2018, 03:06 PM

If your E92 does not have metal valve stems, then you don't have TPMS system. It has FTM (flat tire monitoring) that uses your DSC (ABS) system. I don't have any insight of fixing the ABS, but here is an article talking about ABS failure:

https://www.youcanic.com/guide/bmw-dsc-abs-problems

11-08-2018, 12:47 PM	#1
1120sjh Registered 0 Rep 2 Posts Drives: E92 320d M Sport Join Date: Nov 2018 Location: Cornwall, UK iTrader: (0)	Wheel speed/ABS/TPMS sensor advice Hello everyone, First post on these forums! I've had my 320d M Sport E92 for about six months and love it. However, I'm currently having two issues which hopefully can be solved with one fix. Firstly, over the past 3-4 weeks my traction control has become a bit erratic, kicking in and slightly cutting the power sporadically when driving at basically any speed. This can be overcome by short-pressing the DTC button (twice I've had to long press to completely disable the traction control but generally this is unnecessary). I've read on forums that this is a tell-tale sign of a faulty ABS sensor. Secondly, over the past three days my tyre pressure warning light has been coming on all the time. After resetting it on the dash, it only takes about half an hour of driving for the red tyre/exclamation mark warning light to come on. I've checked each wheel every time and the pressures have remained good and constant. Initially it sounded as though this is a faulty TPMS sensor, but I've just read that UK BMWs don't have these, and the tyre pressure is measured using the wheel diameter from the ABS sensor instead. Can anyone confirm this? If this is the case, hopefully it will mean a proverbial two birds with one stone solution. Thanks in advance!
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11-09-2018, 03:06 PM	#2
mckwong Private 10 Rep 61 Posts Drives: 2009 328i E90 LCI with N51 Join Date: Feb 2016 Location: Fremont, CA iTrader: (0)	If your E92 does not have metal valve stems, then you don't have TPMS system. It has FTM (flat tire monitoring) that uses your DSC (ABS) system. I don't have any insight of fixing the ABS, but here is an article talking about ABS failure: https://www.youcanic.com/guide/bmw-dsc-abs-problems
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