Can’t Reset Rear Brake Pad Service Light

Insane435 · 04-29-2018, 09:40 AM

My idrive says resetnpossible but when I go to do it, it says reset unsuccessful. My rear pads have plenty of thickness left. I may have forgot to reset the light when i installed the m performance brakes about 10k miles ago.

Anyways why would this happen? Did the sensor break? Are those one time use? I did track the car last weekend and maybe that played into this happening.

obert · 04-29-2018, 10:10 AM

On the I drive does it say they need to be changed?

Billfitz · 04-29-2018, 10:55 AM

If the sensor has been tripped then it must be replaced or you'll get the reset failed message. I found this out when I replaced my pads after it tripped and tried using the old sensor, with the same result. You can use the old sensor after a pad change only if it was never tripped.

Insane435 · 04-29-2018, 04:09 PM

Quote:

Originally Posted by obert

On the I drive does it say they need to be changed?

Yea it says 300 miles until replacement

Insane435 · 04-29-2018, 04:10 PM

Quote:

Originally Posted by Billfitz

If the sensor has been tripped then it must be replaced or you'll get the reset failed message. I found this out when I replaced my pads after it tripped and tried using the old sensor, with the same result. You can use the old sensor after a pad change only if it was never tripped.

Ahh ok. Weird how it was even tripped if the pads have this much life left.

Billfitz · 04-29-2018, 05:44 PM

Quote:

Originally Posted by Insane435

Ahh ok. Weird how it was even tripped if the pads have this much life left.

You better check them again, especially the inside pad, as that's where the sensor is.
http://f30.bimmerpost.com/forums/sho....php?t=1471617

Insane435 · 04-29-2018, 09:03 PM

Quote:

Originally Posted by Billfitz

You better check them again, especially the inside pad, as that's where the sensor is.
http://f30.bimmerpost.com/forums/sho....php?t=1471617

Ok, ill look at them if I can, I ordered track pads anyways.

Regardless, do I need new pad sensors still?

obert · 04-29-2018, 09:06 PM

Quote:

Originally Posted by Insane435

Ok, ill look at them if I can, I ordered track pads anyways.

Regardless, do I need new pad sensors still?

I don’t think you do unless it says you need to change your brake pads.

Insane435 · 04-29-2018, 09:08 PM

Quote:

Originally Posted by obert

I don’t think you do unless it says you need to change your brake pads.

Its says like 300 miles until pads need to be changed.

Billfitz · 04-29-2018, 09:34 PM

Quote:

Originally Posted by Insane435

Regardless, do I need new pad sensors still?

I can absolutely guarantee that if you don't order it with the pads you will, and then you'll have to pull the wheel again to change it. I changed my pads, left the old sensor in, and it would not reset. I was smart enough to check it before putting the wheel back on, and I had the new sensor that I'd ordered just in case. I changed the sensor and the reset took. My front sensor had not tripped, so I was able to re-use it.

Insane435 · 04-29-2018, 09:35 PM

Quote:

Originally Posted by Billfitz

I can absolutely guarantee that if you don't order it with the pads you will, and then you'll have to pull the wheel again to change it. I changed my pads, left the old sensor in, and it would not reset. I was smart enough to check it before putting the wheel back on, and I had the new sensor that I'd ordered just in case. I changed the sensor and the reset took. My front sensor had not tripped, so I was able to re-use it.

Ok, ill just buy new sensors, isnt it just one for front and one for the back?

Whistlefist · 04-30-2018, 07:58 AM

Quote:

Originally Posted by Insane435

Ok, ill just buy new sensors, isnt it just one for front and one for the back?

Just one front and one back. Back is passengers side, front is drivers side. I was able to reuse both on my pad change this weekend.

Tribalpinoy911 · 04-30-2018, 01:04 PM

Quote:

Originally Posted by Billfitz

If the sensor has been tripped then it must be replaced or you'll get the reset failed message. I found this out when I replaced my pads after it tripped and tried using the old sensor, with the same result. You can use the old sensor after a pad change only if it was never tripped.

This.

MacklinUSOB · 04-30-2018, 04:54 PM

Same findings here. Replaced my pads with a few MM of material left before tripping sensor. Popped it right back in and got away without spending another 12 bucks.

zinner · 05-05-2018, 06:42 PM

I ran into a similar issue and it was caused because the clock on the computer was unset (because I had pulled the battery negative lead). Make sure the time is set.

Insane435 · 05-07-2018, 08:18 AM

fixed! Somehow the sensor wire broke... i figured something went wrong.

04-29-2018, 09:40 AM	#1
Insane435 Major 478 Rep 1,467 Posts Drives: 435ix M Sport EWG Join Date: Jul 2016 Location: Michigan iTrader: (1)	Can’t Reset Rear Brake Pad Service Light My idrive says resetnpossible but when I go to do it, it says reset unsuccessful. My rear pads have plenty of thickness left. I may have forgot to reset the light when i installed the m performance brakes about 10k miles ago. Anyways why would this happen? Did the sensor break? Are those one time use? I did track the car last weekend and maybe that played into this happening. __________________ 2014 EBII 435ix - Stage 2+ Dragy: 0-60 3.61; 60-130 10.18 2020 MG M340ix - Dragy: 0-60 3.48 2018 LBB X4M40i - Stock Dragy: 0-60 4.85 Last edited by Insane435; 04-29-2018 at 04:09 PM..
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04-29-2018, 10:10 AM	#2
obert Brigadier General 1781 Rep 4,456 Posts Drives: 2013 328i Join Date: Oct 2011 Location: Seattle Wa iTrader: (49)	On the I drive does it say they need to be changed?
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04-29-2018, 10:55 AM	#3
Billfitz Lieutenant General 8245 Rep 16,088 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	If the sensor has been tripped then it must be replaced or you'll get the reset failed message. I found this out when I replaced my pads after it tripped and tried using the old sensor, with the same result. You can use the old sensor after a pad change only if it was never tripped.
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04-30-2018, 04:54 PM	#14
MacklinUSOB Captain 518 Rep 891 Posts Drives: f30 328i 6MT Sport Join Date: Jan 2017 Location: Connecticut iTrader: (0)	Same findings here. Replaced my pads with a few MM of material left before tripping sensor. Popped it right back in and got away without spending another 12 bucks. __________________ 328i RWD \| MW on CRed Slick Top \| 6MT \| BM3 \| MPE \| GPlus FMIC \| CSF Radiator \| Millway Street Camber Plates & Monoballs \| KW V2 6k/18k Swift Springs \| F80 LCA/TS \| SPL Bump Steer Kit \| APEX SM-10 \| R-S4 \| DS2500 \| RBF600 \| SS Lines \| Past: E36 328is & E38 740i
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05-05-2018, 06:42 PM	#15
zinner Major 559 Rep 1,127 Posts Drives: `17 X5 35d/`15 335i/`18 M550IX Join Date: Oct 2014 Location: Raleigh, NC iTrader: (0)	I ran into a similar issue and it was caused because the clock on the computer was unset (because I had pulled the battery negative lead). Make sure the time is set.
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05-07-2018, 08:18 AM	#16
Insane435 Major 478 Rep 1,467 Posts Drives: 435ix M Sport EWG Join Date: Jul 2016 Location: Michigan iTrader: (1)	fixed! Somehow the sensor wire broke... i figured something went wrong. __________________ 2014 EBII 435ix - Stage 2+ Dragy: 0-60 3.61; 60-130 10.18 2020 MG M340ix - Dragy: 0-60 3.48 2018 LBB X4M40i - Stock Dragy: 0-60 4.85
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