[dragerboy]

Just had the privilege of driving in the hideous weather this morning. Was on the dual carriage way doing 60mph, moved to centre of the road to avoid deep water and when I pulled back in Traction Control Light flashing, not madly but on/off every second. Pulled off and slowed down to 30ish and it went. Came back on the dual carriage way and not seen it since.

Any ideas?

[Tambohamilton]

Sounds like the stability control was working to keep you in a straight line, while the car was aquaplaning on standing water on the road. Go steady

[dragerboy]

That was my first thought but there was no feeling that this was happening and it went on for a good 40 seconds before I came off the dual carriage way.

[Tambohamilton]

If you were just at a steady cruise, I doubt there would be much to feel. There's no other reason that I'm aware of for the DSC light to flash. Any sensor malfunction etc would be accompanied by a bong, and would persist until you cycled the ignition.

[dragerboy]

It bonged at the start but not during the flashing sequence. When its dry I will take it out again and see if it happens again at speed.

[Thermobaric]

Do you have the ability to read codes? Could be a wheel speed sensor gone bad or ABS reluctor ring issue or both.

[Chappers 71]

What make & how worn are your rear tyres?
I suspect it was just the TC doing it's thing, if the rain was anything like it was here this morning I suspect one could easily lose traction at 60mph.

[nomiS330d]

Originally Posted by Chappers 71

What make & how worn are your rear tyres?
I suspect it was just the TC doing it's thing, if the rain was anything like it was here this morning I suspect one could easily lose traction at 60mph.

Well, with the torque of a 3.0d yes but not with your weedy gas guzzler

[Chappers 71]

^
Lol, I was out in the rain in my ‘torquey’ 3.0D V6 Disco this morning pumping out noxious gases

[rasa bmw]

sometimes happens with a dirty sensor,,had it before,,only ever went haywire when torrential rain,,new rear abs sensor sorted it,when cornering on right hand tight bends my e90 lights up,,but yesterday it did it in the rain but my rear tyres are quite low now,,new tyres this week

[dragerboy]

Been out today and has not occurred although it was a very brief drive. 100% convinced it was not the traction control kicking in as it went on for too long with no accelerator input etc.

Are the sensors easy to change and is it one per wheel. My tyres probably have between 4-5mm left on the rear.

[Tambohamilton]

Get a code reader and go from there - don't just start replacing things randomly

[rasa bmw]

only 2 sensors,,if it was the rear offside then i think speedo and fuel gauge would be affected

[Tambohamilton]

There are 4 wheel speed sensors...

[Silver Streek]

Definitely 4 sensors, you need one on each wheel otherwise the ABS and stability control won't have enough information to tell when it needs to kick in. As Tambohamilton says get the codes read so you replace the correct one. And don't do what I did and get the part number wrong and order a rear sensor to put in the front hub.... It doesn't work 🤓😅

[rasa bmw]

my bad,,i was getting confused with wear sensors,,,as ive just replaced one ha ha ha

[Karlos20945]

My traction control lights up at the same bumps in the road every day. I put it down to the dodgy run flats. I’ve tried it with the DTC button pressed in briefly and the problem goes away. It seems the BMW traction control is, by default, a little too nannyish.

[rasa bmw]

Originally Posted by Karlos20945

My traction control lights up at the same bumps in the road every day. I put it down to the dodgy run flats. I’ve tried it with the DTC button pressed in briefly and the problem goes away. It seems the BMW traction control is, by default, a little too nannyish.

id say reluctor ring distortion,,same roundabout every time i get a flash,,putting load onto the deformed side ring,,right hand tight turn