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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 Wed, Nov-21-2018, 07:05:27 PM   #21
Andrew 06M3Cab
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Default Re: DSC + Tire Pressure Lights

Thanks for the tip - I will get a buddy to help me out with the real time data. I would have thought if there was an abnormality in the wheel speed sensor that it would throw a fault, even if in shadow. But on reflection, the DME may think there is an actual wheel slippage, not that there is something wrong.
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Old Wed, Nov-21-2018, 08:25:42 PM   #22
neopolymath
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Default Re: DSC + Tire Pressure Lights

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Originally Posted by Andrew 06M3Cab View Post
Thanks for the tip - I will get a buddy to help me out with the real time data. I would have thought if there was an abnormality in the wheel speed sensor that it would throw a fault, even if in shadow. But on reflection, the DME may think there is an actual wheel slippage, not that there is something wrong.
I forgot to mention to check the wiring as well. In my example, my sensor for one wheel was reading at like 3 mph even when stationary and stuff like that.
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Old Sun, Nov-25-2018, 07:01:27 PM   #23
Andrew 06M3Cab
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Default Re: DSC + Tire Pressure Lights

So I think I found the problem. Today, I went for a drive with INPA plugged in, Monitoring each of the four independent we’ll speeds. Everything was normal for a bit, and then sure enough, my right rear wheel speed started fluctuating erratically Sometimes, when this happens, my DSC lights flashed and traction control cut in.

The next step is to clean the sensor. Hopefully this will illuminate the problem. However, if it doesn’t, does anyone have experience with non OE sensors? What brands have you tried, and what was your experience?
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Old Sun, Nov-25-2018, 09:34:38 PM   #24
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Default Re: DSC + Tire Pressure Lights

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Originally Posted by Andrew 06M3Cab View Post
So I think I found the problem. Today, I went for a drive with INPA plugged in, Monitoring each of the four independent we’ll speeds. Everything was normal for a bit, and then sure enough, my right rear wheel speed started fluctuating erratically Sometimes, when this happens, my DSC lights flashed and traction control cut in.

The next step is to clean the sensor. Hopefully this will illuminate the problem. However, if it doesn’t, does anyone have experience with non OE sensors? What brands have you tried, and what was your experience?
This is a part that you should not cheap out on. Buy once and cry once on BMW electronics because the budget/non-oem parts do not seem to last but a year in most applications in my experiences over the years. That said, I don't personally think that you need a "genuine bmw" part, but others will likely hold that standard.
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Old Thu, Dec-06-2018, 08:12:51 PM   #25
Andrew 06M3Cab
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Default Re: DSC + Tire Pressure Lights

Ok, so it turns out that my problem wasn't the wheel speed sensor. When the problem returned, I took a closer look, and it looks like the reluctor ring on the drive shaft, which is very corroded. Unfortunately, BMW does not sell this part alone, only as part of the output drive shaft from the diff (approaching $1,000 each!!). The rings are available on ebay for about $20 each. A much better solution if it works....

Has anyone done this? is it a DIY?
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Old Mon, Dec-10-2018, 08:47:44 PM   #26
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Default Re: DSC + Tire Pressure Lights

After driving the car back and forth to/from work for approximately 2 weeks, at least 800 miles,, the lights came on again. Then, they came on during the next day drive. I pulled just the DSC connector off and cleared it with a wire brush and spray dielectric on it. But haven't driven the car since because of a death in the family.
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Old Mon, Dec-10-2018, 09:22:04 PM   #27
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Default Re: DSC + Tire Pressure Lights

OP I had the exact same symptoms (ABS being applied while cruising down the highway etc) only I was getting DSC + Tire Pressure + Brake light and my issue was the Yaw Rate sensor. It's located underneath your driver seat carpet. Surprised no one mentioned this yet. Around this age of the car its normal for them to start wearing out.
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2001 E46 M3 - Slicktop Manual Coupe - Alpine White on Imola Red

Engine: Karbonius CSL airbox, Lang Racing stage 2.5 head, Schrick 288/280 cams & followers, Lang Racing rod journal widening kit w/ CP 12:1 87.5mm pistons & Carrillo rods, ARP head studs, Epic Motorsports tune, TMS Power Pulleys, ECS catch can, Supersprint V1 stepped headers & section 1, SGT scza section 3.
Drivetrain: Clutch Masters FX725, Clutch Masters Hydraulic TB, AKG stage II shifter, RE trans mounts, Motorsport 4.10 R&P, Revshift 80A diff bushings, mason clutch pedal.
Suspension/Brakes: Bilstein PSS9's, RE RSM's, UUC sway bars, PFC direct drive rotors, PFC 08's, Nitto NT05's, Motorsport Hardware 75mm stud kit.
Coming soon: Cobra Nogaro seats, Supersprint dual 2.5" section 2, RTD V2 mini shifter, BW Street/Track rear camber arms, Turner monoball RTAB's.

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Old Mon, Dec-10-2018, 10:58:06 PM   #28
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Default Re: DSC + Tire Pressure Lights

Stupid weird crazy electronic sh*t always does my head in.
I had the exact same situation about four years ago which lasted about a year on and off. Haven't seen it since but makes me worry about cars adopting more electronics with each new generation.
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Discussing DSC + Tire Pressure Lights 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)