Traction control and brake warning lights

[colb]

Out and about around the SouthCoast this week with the Z4, after a. Sharp left turn at a roundabout I got amber traction control and brake shoe lights on the dash, didn’t clear until I did a restart and both now out. Not put the Creator 310+ on it to see if they left any codes as yet. Typical to get something crop up MOT due next month. Must say other than this the car is running like a dream and roof down all the time.

[enuff_zed]

Potentially something as simple as the wheel going light and slipping a bit in the turn.
As you say, check the codes.
Also worth checking the routing of the sensor cable, just in case it pulled tight?

[PerryGunn]

Quite possible that one of the DSC sensors is starting to fail - this often starts as an intermittent fault and then eventually becomes permanent. There are two of the sensors and they have to agree within a certain tolerance or a fault is generated. Get the codes pulled and, assuming it's the sensor, it'll tell you which one.

Replacement sensor costs around £95 from Soapers and is an easy DIY replacement as long as you have (or can borrow) a 27mm spanner.

If you look at this thread , the 2nd & 3rd pages have the info necessary for the DIY repair

[colb]

Code reader on this morning revealed brake pressure sensor and tyre pressure code all cleared as not currently present. No lights have returned, replaced one of the master cylinder sensors a while ago maybe the other is on its way out,spare in the garage waiting.

[colb]

Had a second occurrence of the same warning lights activated again when turning left and braking. Same codes, cleared and lights off again. Had a look at live data from the two pressure sensors on the master cylinder and one is showing a negative figure at rest, both seem equal when brake applied so I am presuming one is out of tolerence and the cause of the codes and lights. Will put the new spare I have in after double checking which one it is thats reading low, easy enough will disconnect one at a time and look at live data on the scanner, my money is on the original one thats still in there.