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Old 8th November 2010, 09:47 PM   #1
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Default Handbrake and DSC Warning lights

Hi,

Done a search of the forum and the only thread a can see that relates directly to what this sounds like uses images rather than a description so im not sure if it is the same thing or not.

Couple of days ago I went through a huge puddle (not on purpose) following day on start up my DSC light was on, shortly after (2 mins) the handbrake light came on. car feels ok apart from no pressure on brake pedal.

before I take it to get diagnosed id like a little idea what it could be and cost reckon it might be a wheel sensor? if so how much does that usually work out as? if not...what else could it be and how much?

Thanks for any info

Craig
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Old 8th November 2010, 10:05 PM   #2
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More than likely a wheel sensor in your circomstance as they are external. All the other bits that control the DSC are inside the car i.e DSC control module and the Steering angle sensor.

As for cost I have no idea. Stay well clear of the Main dealers tho as you'll more than likely get your pants pulled down.

Hope you get it sorted at a reasonable cost.
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Old 8th November 2010, 10:30 PM   #3
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thanks....also wondering if it could be my tracking as i've been thinking thats not 100% over the past few weeks.

how do you reset lights on an 04 M3? just want to try it to make sure they come back on again.

so far ive read.

switch to ignition 2 with foot on brake
switch to ignition 2 with foot not on brake
switch to ignition 2 with door open
switch to ignition 2 and press button by gearstick
switch to ignition 2 and bark like a dog

Thanks
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Old 8th November 2010, 10:45 PM   #4
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It could be but I don't think so for 2 reasons.

1, The puddle would have been more likely to affect your wheel sensor than your tracking.

2, If your tracking was that far out it would be your steering angle sensor registering the fauld and if this was the case you would have DSC handbrake AND the tyre inflation light on all at the same time.

To reset your fault codes you will have to plug a diagnostic machine into your OBD2 port to cancel them.

If you have a feeling that your tracking is out then in all likelyhood it is. Get this sorted first as after you have found/corrected the fault your DSC will need to be recalibrated, no point recalbrating your DSC with the tracking out as when you do sort the tracking the fault may reapear again meaning another calibration.
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Old 8th November 2010, 10:54 PM   #5
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Cool thanks very much. I'll stick any updates on this thread.
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Old 9th November 2010, 12:17 AM   #6
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Default DSC and (0) handbrake light. How to reset.

Hi
Here's the problem I had on 03 M3 Cab.
Tried driving with the DSC OFF ie Press DSC button and DCS light comes in the centre of dash.
I then had a problem, the (O) light as well as the DSC come on. I could not then turn the DSC back on (DSC light off). So no matter how many time I pressed the DSC button the DSC and the (O) would not go off.

Here's what worked for me,
Disconnected battery positive and negative terminals.
I then connected the Positive and Negative terminal together on the car side. ( NOT THE BATTERY TERMINALS OR YOU WILL GET AN EXPLOSION ), I left them connected together for about half an hour.
Re connected THE BATTERY and now all is fine.
I have read many articles saying the steering angle sensor causes this and needs to be recalibrated bt BMW, but this worked for me, probably saved me a small fortune.
Thanks Dave.
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Old 9th November 2010, 12:26 PM   #7
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would this problem also make my braking feel different...i take it it would?
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Old 9th November 2010, 02:17 PM   #8
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This may not help, but I have the same problem on my e39 asc and abs light comes on periodically. I took it to Bexley Motor Sport today and they connected to computer. I thought it was the wheelspeed sensors, but the guy diagnosed it as abs pressure sensor or if not that, the abs control unit.

They only charged me 45 I'd get a diagnostic before you spend on parts.
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Old 13th November 2010, 11:22 PM   #9
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This turned out to be a perished brake pipe under the car where it's held by the bracket (you'd think BMW would think about exposed parts).

Cost 400 to get repaired at grovsener in reading. Did it in one day.
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