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hiya all and happy new year..

Please can anyone help, the traction control light is flashing when driving (orange triangle with a clockwise circle arrow) then the car starts to judder/losing power, when the dtc button is pressed on the car still flashes but doesn't judder/lose power under 40mph.......

If anyone could help it would be great, I have had it into BMW who say they dont know what the problem is to cause this problem.

If any further info required please ask.

Thanks Baggio
 

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Better late than never

Just searching Google to try and find a solution to exactly the same problem and came across your thread.

Last year my 1 series started doing the same thing on the motorway, I had to call the RAC twice and in the end they recovered it back home because they didn't know what else to do. I then took it to a local garage who said there was no fault... I then took it to another "BMW Specialist" which someone recommended, they charged me £300 for "diagnostics" and then also said there was no fault found. Useless mechanics charging for nothing!
I was about to give up and get rid of the car and then a customer told me to try completely disabling the DTC (Hold the button down for 5 seconds and the traction loss light will come on permanently, I think it's the yellow circle arrow one). This worked and my car was able to drive normally without loosing power, but obviously didn't fix the problem.
He then plugged his computer into the car and showed me the faults, it quite clearly showed a fault with the front left ABS sensor so he told me to take it out and clean it... Which I did and funnily enough the fault was fixed (in total it took about 30mins). Annoyingly the problem has now returned so I am preparing myself to take all of the sensors out to clean them and also check the drive shafts, which apparently have small "cog" on it from which the sensors read the speed, someone told me these cogs can be exposed to the elements and get damaged so I might have to take a thin file to it to remove rust and other grime.

Hope that helps but I'd be interested to hear if you found any other solution.
 

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Hi I just wanted to say thank you to the person who posted a reply to this problem. I was also having the same issue and had been to 4 different places to pay a bomb and to be told there was no fault, each place said they had driven it for a few mile and the problem didn't happen but I found that after it had been driven for a good 10 - 15 mins it started and got progressively worse. I googled the problem and found this thread. I printed out the thread and took it to the 5th garage and asked them to start with the wheel sensors. They quoted me an hours labour which was £48 for all 4 sensors. They had to soak the sensors in wd40 for a while then they cleaned them out and put everything back. I've had it back for 3 days now and the problem has gone, I can't believe how lucky I was to find this thread. Thank you, thank you, thank you. Bronwen
 

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i have known the pick up ring on the rear drive shafts goes out of shape and rubs on the sensor, you can see the high spots on the ring as its polished by the sensor . thats the most comon fault from the symptoms you describe . this does not log any faults , as there is nothing wrong with the system , but the sensor reads the wheel speed wrong , and the car goes in to a DSC regulation mode .
 

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Light flashing often means electrical problem. Probably with the unit, probably with any fuse. Or have you add something new to your car? You should first diagnose the unit, locate the problem, then check every possible components.
 

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I also had traction control light coming in my car which is BMW320D.
Intermittently it was also showing the warning on airbags as well.

I showed it to many private garages but it did not show any error code. Finally I took it to BWM garage and it turned out to be a battery issue.
So before you spend any money on further diagnostics make sure to check the battery problem.
 

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Hello guys! as Ufojosh said, I can confirm. The problem for me was like this. Under 60 Km the DSC (orange triangle with a clockwise circle arrow), but on long travelings over 60Km, in every turn, the DSC appeared. One time i could't continue, I had to deactivated. When i went to the service they told me that there could be a problem with the bearing at my left back wheel. They test it on computer. When they got down the wheel they found out the the problem was with the drive shaft from the wheel. The drive shaft was touching the sensor. I changed the drive shaft and it runs fine. So you should take a look there, maybe you see something there.
 

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Same problem :-(

Hi,

Glad I found this thread, I have a 120D 55 - plate and it has started to do the same. Usually happens after 20mins or so, the DSC light flashes on and off. When the light is on the car loses power and judders, making me look an idiot on the road crawling along at 20-30 Mph.
I have taken it to two different garages to be scanned and no faults found. They recommended that I take it back to be scanned when the light comes on but it soon goes off again.
Spoken to one garage and they said it could possibly be the ECU needs to be replaced?

I'm not convinced though, please help???
 

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Hi i was driving today and my traction control and handbrake light (both in orange/yellow) have come on and stayed on.

Could anyone please tell me how to turn it off or what is wrong with it?

Thanks
 

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press and hold your DSC button for 5 seconds. Be careful though, it will disable ABS, Traction control etc so be careful especially in the wet.

get yourself an OBD scanner for BMW's which will tell you which corner it is and then change the sensor and reluctor ring.

in the interim, you can clean the sensors (that worked for me for a few weeks) and you should be able to see shiny spots on reluctor ring where it has been rubbing.
 

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I am constantly astonished that BMW dealerships can't find and resolve common problems on the cars on which they are supposed to be experts!

The traction control / ABS systems are linked on all these cars. These problems can be caused by any of the ABS sensors being dirty or dead. Mine was the OS front, last month. The rear reluctor rings are a very common fault, as discussed above. Contrary to what the BMW dealership told me, you do NOT have to buy a complete drive shaft to replace the problem reluctor ring - the rings are available from places like Euro Car Parts for about £40.

So, if you want to avoid getting fleeced by supercilious twits, find a good independent garage with properly trained mechanics. If Harpenden is close enough, I'd highly recommend:

MOT Testing Harpenden | Car Servicing St Albans | Harpenden Mill Autocare

Their Manager/lead mechanic has an MSc in mechanical engineering and is a former race car builder. Their hourly rate is just £50! They have all the latest equipment and can even provide the latest software updates for BMW, Mercedes, Audi and Jaguar etc.

Good luck.
 

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The abs reluctor ring you refer to can be bought on ebay for £3.99 its zinc plated for better corrosion resistance I have bought one to fit when it stops raining. quite often its sensors though. mine has abs and dtc lights on and diagnostics indicate rear left sensor / ring. My car dosnt judder though if it judders under acceleration it could be dual mass flywheel related maybe?
 

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Diagnostic software

I know this is an old thread but my bmw has started exhibiting this exact issue.

I plugged in my ODB BT device and read the fault codes using Torque on my mobile phone but it showed no error codes.

What software is everyone using to read the abs sensor codes?

Also I did not know that holding the DTC button for five seconds did anything so I will try that later, until now I have been just pressing the dtc button to err disable the dtc and it was making the issue better but not getting rid of it.

Thanks for your help
 

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INPA or DIS will read the abs codes but you will need a proper adaptor as the standard BT OBD ones will not work.
 

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I know this is an old thread but my bmw has started exhibiting this exact issue.

I plugged in my ODB BT device and read the fault codes using Torque on my mobile phone but it showed no error codes.

What software is everyone using to read the abs sensor codes?

Also I did not know that holding the DTC button for five seconds did anything so I will try that later, until now I have been just pressing the dtc button to err disable the dtc and it was making the issue better but not getting rid of it.

Thanks for your help
holding the dtc button will display a slightly different amber light,,or another amber light,,if you are not getting this,then you are not holding it in long enough..and if its reluctor ring,,then it will prob not throw a code,,but will have a ghost code hidden,,so depending on what scanner you use you will see/not see it..also you need to be driving with the scanner hooked up to see what the sensors are doing etc,,best to have another passenger to do it as not clever doing it on your own.
 

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Some great posts on this topic - my wife's 120d has been showing the aforementioned problems - traction control cutting in and the orange flashing warning light showing, which continues for a while and then the ABS lights shows and the traction contol switches off and the car is drivable again!
I've taken all the ABS sensors out and cleaned them, only the rear offside was showing some wear on the tip of the sensor, so I'll order a new sensor and reluctor (reductor?) ring and get them fitted when I have time - is it an easy job to change the ring?)
 
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