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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Jun-01-2017, 09:20:15 PM   #21
natty99
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Default Re: DSC light on + Yellow 'Brake' light

So possible culprits are steering angle sensor, DSC pressure sensor, voodoo...

Anybody else have anything concrete to add? My DSC and brake light used to randomly come one/off, but it stays on now regardless of deive cycles. Haven't pulled codes as I do not have the tools. Just wondering if this is a phase or worth getting checked out. Car drives fine, which has me scratching my head. And the SES light is not on, and never was
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Last edited by natty99; Thu, Jun-01-2017 at 09:23:27 PM.
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Old Fri, Feb-23-2018, 08:58:37 PM   #22
LemonOne
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Default Re: DSC light on + Yellow 'Brake' light

Bringing this thread back to life, did anyone find a solution for this yet?
I scanned it with my schwaben code reader and said something about DSC pressure.
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Old Fri, Feb-23-2018, 11:33:36 PM   #23
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Default Re: DSC light on + Yellow 'Brake' light

Quote:
Originally Posted by LemonOne View Post
Bringing this thread back to life, did anyone find a solution for this yet?
I scanned it with my schwaben code reader and said something about DSC pressure.
Kinda Vague. INPA will give you a real error, but my guess based on the information given is a wheel speed sensor.
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Old Sat, Feb-24-2018, 08:44:00 AM   #24
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Default Re: DSC light on + Yellow 'Brake' light

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Originally Posted by LemonOne View Post
Bringing this thread back to life, did anyone find a solution for this yet?
I scanned it with my schwaben code reader and said something about DSC pressure.


Probably one of the two DSC pressure sensors attached to the master cylinder. I have the same codes pop up periodically. Iíve got two sensors that I was going to replace both of them with since i didnít know which one was bad. PM me if you want to buy them, I havenít had the code in a while.
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Old Sat, Feb-24-2018, 11:41:10 AM   #25
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Default Re: DSC light on + Yellow 'Brake' light

i had the issues and the DSC presure switch was the noted culprit. I did replace it and at first it did nothing and then it just went away for good (so far). the system seems to be a bit slow acting to respond to changes. i hear that the DSC unit itself can fail but thats expensive. changing out the pressure sensor isn't too bad to do. If its stuck in that position and the pressure sensor is noted as the cause I'd do that first just to save some cash
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Old Tue, Feb-27-2018, 09:44:45 PM   #26
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Default Re: DSC light on + Yellow 'Brake' light

In case I have to replace the DSC pressure sensor, is it true that you have to bleed the entire brake system in order to break-in correctly? Any experience?
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Old Tue, Feb-27-2018, 10:42:07 PM   #27
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Default Re: DSC light on + Yellow 'Brake' light

Iíve had the issue and BMW scanner said pressure sensor. So while I had things partially apart I pulled all plugs off including the big DSC ECU connector down below. I just took them off and on a few times. Then moved to the pressure sensor which if I remember could only read one and it was the one that was coming up in scanner. I pulled the plug and put it back a few times. All the plugs in the ECU box I did the same. Then i put everything back together. Itís been a little less than a year and no lights have come up. So sometimes it might just be the result of a bad electrical connection.
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Old Wed, Feb-28-2018, 05:54:18 PM   #28
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Default Re: DSC light on + Yellow 'Brake' light

I got the DSC + Brake light often throughout the summer, mainly in 2 situations.

Either when it was scorching hot, like the hottest days of summer sitting in traffic. It just beeped on and went away on its own a day or two later.

The other time was when I frequented dusty back roads. It usually went off a few hours after a wash or after it rained. Had this happen 3+ times.
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Discussing DSC light on + Yellow 'Brake' light in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)