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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, 06:05:27 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, 07:25:42 PM   #22
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Default Re: DSC + Tire Pressure Lights

Quote:
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, 06:01:27 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, 08:34:38 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, 07:12:51 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, 07:47:44 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, 08:22:04 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, Kassel CSL DME & MAP conversion, 36lb injectors, Paul Claude tune, APE Flex fuel kit, TMS Power Pulleys, SS V1 stepped headers & catless section 1, SS 2.5” twin-piped resonated section 2, SGT scza section 3.
Drivetrain: DKM Stage 2 Clutch, RTD V2 mini shifter, RE trans mounts, Motorsport 4.10 R&P, Revshift 80A diff bushings.
Suspension/Brakes: Bilstein PSS9's, RE RSM's, UUC sway bars, BW camber arms, TMS monoball RTABs, ZCP rotors, BW solid caliper guide bushings, PFC 08's, Motorsport Hardware 75mm stud kit.
Interior: Cobra Nogaro seats, BMW Performance shift knob/e-brake/pedals, OE alcantara boots, mason clutch pedal, Xtrons 9" headunit w/ carplay

IG: Zach_e46M
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Old Mon, Dec-10-2018, 09:58:06 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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Old Wed, Apr-17-2019, 05:39:56 PM   #29
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Default Re: DSC + Tire Pressure Lights

I had the trifecta lights and it turned out to be bad or intermittently sticking front calipers. I repalced them both and the light's never came on. No more juttering at take off also. You might want to look into your brake calipers.
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Old Tue, Jun-04-2019, 07:51:58 PM   #30
m3e46_1970
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Default Re: DSC + Tire Pressure Lights

Hi everyone. Sorry for being away so long.

Unfortunately, the problem returned. In fact, now I am having almost the same problem on my other car (DSC + ABS, thus "almost"). Very weird.

So over the winter, the problem only come up once in a long while (maybe 6 times over the winter months). Now that it is 90+ degree, I am having the problem almost daily. However, today is the first time I heard what sounded like the ABS pump running. Started the car this morning at 0600 and haven't made it out of my neighborhood (maybe 1/10 of a mile), the DSC light started blinking and the ABS pump running. I just let off the gas (wad doing around 15 MPH) and can feel the brake being applied in short duration. I let it roll for about 3 seconds and applied the brake. I feel a strong brake pumping actions for about a second and then both the DSC + TPM lights came ON solid (both amber--I have verified that the TPM light can turn RED). Then I proceeded to drive 30 miles to work with them ON.

At lunch time, started the car, pressed the DSC button to turn it OFF (i.e. DSC light ON the dash) and before the car could rolled 10 ft., the TPM light came ON. Going back to work after lunch, started the car, press the DSC button to turn it OFF and drove all the way back to work (5 miles) with no TPM light.

Here is all the stuff that I have replaced the past 6 months:
1. All 4 wheel sensors (non-OE)
2. Steering angle sensor (OE and reprogrammed at BMW dealer)
3. Yaw sensor (replaced a ripped driver seat that I helped pulled out of the owner of BimmerWorld in Atlanta, GA. running M3). I guess it is possible that this yaw sensor is bad too.

I did managed to get INPA working. When using it view the speed sensor in realtime, if I go over 20 MPH, the application screen blank out. But the DSC light will stay ON when I connect the OBD with INPA showing the speed sensors. Once I unplug the OBD connector, DSC light goes OFF.

I contacted a company that repair BMW ABS module. I described my problem and they actually wrote back and said they are pretty confident that this is not a ABS module problem.

"This isn’t typical of a module issue. It sounds more like a mechanical issue with either the wheel bearing or a tone ring on one of the driveshafts."

I'm very grateful for they suggestion and help me avoid spending more money on something that doesn't need fixing. But if it is the reluctor/tone ring, won't that triggers these lights almost immediately? Due to the nature of these systems, DSC and ABS, they should be constantly monitoring the sensors so if a sensor or the ring is bad, it should pickup and activate these lights every time the car roll out of park.

Any idea? While both cars doing almost the same thing (my other car, automatic tranny, will actually activate the brakes causing it to come to a complete stop and won't allow you to drive it regardless how hard you press down on the gas), I guess I will have to take it to the dealership or indy shop to repair at least one of them so I have a reliable car to get around. The M3, manual tranny, at least have not bring itself to a dead stop when this is happening.

Any other suggestions?

Thanks.
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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)