Dashboard light trio: Brake Warning, DSC and Flat Tire Monitor

flyzipper · 10-17-2024, 03:04 PM

Good day all!

I'm wondering if anyone has dealt with the trio of dashboard warning lights I mentioned in the title. Brake warning, Dynamic Stability Control and Tire Pressure Monitor lights illuminated in yellow.

My 2008 M Coupe uses the ABS sensors for tire pressure monitoring, so taken together this could indicate there's some issue with ABS/DSC sensors, but I'm just guessing.

This first started after the front rotors and calipers were replaced in the spring, but back then the lights were random and intermittent (or not at all on some drives). At that time, I believe I could feel a very slight grabbing that felt like a brake applying, then that trio of lights would illuminate ("believe" because it was very slight and perhaps observer bias influenced by the lights themselves).

Currently, the lights clear when the car is off and then started, but they appear as soon as the car moves in reverse.

I have service scheduled with the garage who performed the last brake service, but would appreciate any insights I can find to prep me for that appointment.

Vanne · 10-19-2024, 02:47 PM

prob a wheel speed sensor on one of the wheels (4 installed) did you recently do brakes or wheels? edit: i just re=read what you typed.. so yead def a wheel speed sensor.. which one? beats me.. id start by having a look at the condition of them and go from there.

3002 tii · 10-20-2024, 08:49 PM

Agree unless your battery died recently, I’d think ABS sensor but best thing is to scan for codes instead of throwing random parts at it.

maupineda · 10-20-2024, 10:43 PM

Scan the car and see what DTC's codes you have.

flyzipper · 10-29-2024, 06:58 PM

Thanks all, it's going into the mechanic on November 5th and I'll let you know what's discovered.

kptools · 11-12-2024, 07:37 AM

Just curious what codes you had what was done to car.

B328iC · 11-16-2024, 10:56 AM

A lot of times it's just dirt blocking a wheel speed sensor. Cleaning them could be all they need.

AK72 · 12-03-2024, 10:18 AM

Another thought for you: it may sound ridiculous, but it could be your voltage regulator. I have seen many cases with these symptoms.

10-17-2024, 03:04 PM	#1
flyzipper Private First Class 12 Rep 101 Posts Drives: 2008 M Coupe Join Date: Dec 2011 Location: Ontario iTrader: (0) Garage List 2008 BMW M Coupe [0.00]	Dashboard light trio: Brake Warning, DSC and Flat Tire Monitor Good day all! I'm wondering if anyone has dealt with the trio of dashboard warning lights I mentioned in the title. Brake warning, Dynamic Stability Control and Tire Pressure Monitor lights illuminated in yellow. My 2008 M Coupe uses the ABS sensors for tire pressure monitoring, so taken together this could indicate there's some issue with ABS/DSC sensors, but I'm just guessing. This first started after the front rotors and calipers were replaced in the spring, but back then the lights were random and intermittent (or not at all on some drives). At that time, I believe I could feel a very slight grabbing that felt like a brake applying, then that trio of lights would illuminate ("believe" because it was very slight and perhaps observer bias influenced by the lights themselves). Currently, the lights clear when the car is off and then started, but they appear as soon as the car moves in reverse. I have service scheduled with the garage who performed the last brake service, but would appreciate any insights I can find to prep me for that appointment.
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10-19-2024, 02:47 PM	#2
Vanne Down Under!! 1672 Rep 4,330 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	prob a wheel speed sensor on one of the wheels (4 installed) did you recently do brakes or wheels? edit: i just re=read what you typed.. so yead def a wheel speed sensor.. which one? beats me.. id start by having a look at the condition of them and go from there. __________________ 2007 EuroSpec Z4///MC - Building/Developing Z4 GT3 Powered by
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10-20-2024, 08:49 PM	#3
3002 tii Lieutenant General 2490 Rep 12,698 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (100) Garage List E86 Z4 M [10.00] F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] E85 Z4 M (Retired) [9.41] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.56] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93]	Agree unless your battery died recently, I’d think ABS sensor but best thing is to scan for codes instead of throwing random parts at it. __________________ Follow for latest mods
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10-20-2024, 10:43 PM	#4
maupineda Major 525 Rep 1,041 Posts Drives: E86 Z4MC Join Date: Jul 2012 Location: Detroit, MI iTrader: (3)	Scan the car and see what DTC's codes you have.
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10-29-2024, 06:58 PM	#5
flyzipper Private First Class 12 Rep 101 Posts Drives: 2008 M Coupe Join Date: Dec 2011 Location: Ontario iTrader: (0) Garage List 2008 BMW M Coupe [0.00]	Thanks all, it's going into the mechanic on November 5th and I'll let you know what's discovered.
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11-12-2024, 07:37 AM	#6
kptools Registered 0 Rep 1 Posts Drives: 2007 BMW Z4 Join Date: Nov 2024 Location: Florida iTrader: (0)	Just curious what codes you had what was done to car.
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11-16-2024, 10:56 AM	#7
B328iC Private First Class 55 Rep 144 Posts Drives: 97 328iC, 2003 Z4 Join Date: Feb 2019 Location: Miamisburg, Ohio iTrader: (1)	A lot of times it's just dirt blocking a wheel speed sensor. Cleaning them could be all they need.
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12-03-2024, 10:18 AM	#8
AK72 Lieutenant 302 Rep 413 Posts Drives: 2007 BMW Z4 m Coupe Join Date: Apr 2013 Location: Toronto iTrader: (0)	Another thought for you: it may sound ridiculous, but it could be your voltage regulator. I have seen many cases with these symptoms. __________________ Powered by
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