Brake Pad Warning

bryce · 08-02-2011, 07:23 PM

I happened to look at my service due mileage this morning, the front breaks had 5k miles, rears were 12k left. Upon starting my car this afternoon after work, the brake light stayed lit in the cluster and the nav displayed the message that the brake pads are worn to the minimum. My commute is 5 miles to work, its highly unlikely that my brakes wore down THAT much this morning. The mileage for the front and rear brakes now is just blank. Any ideas? It almost seems like a sensor went out, but is it feasible that all 4 brake sensors went out at the same time? Thanks in advance

BKV122 · 08-02-2011, 07:33 PM

It is possible that the computer computed the wrong mileage left and the brake sensor tripped on the front pads. There are only 2 pad wear sensors, one in the front and one in the rear, i forget which side they are on

Glim · 08-03-2011, 09:43 PM

Front left (driver side) and rear right sensors

They should not be blank, take it in and have them look at it.

When the wear sensor triggers a pad replacement you should see a miles/km until end of pad life and a yellow warning when you start the car.

bruning6 · 12-15-2011, 01:47 PM

Bryce did you ever get this taken care of? I know this is different but still its a wierd brake issue. In the 135i when it came off the trailer here in NH it had a low tire light - I found a nail in the RF tire. Pulled the wheel off and plugged the tire then when I reinstalled it the red Brake light was on the cluster but nothing in the warning section. Pulled the wheel back off and checked the brake pad sensor which appeared fine. Tried driving it light was still on. As you know the pads are/were mint front and back. Next week brought it into BMW to get the injector recall taken care of and had them take a peak they said the same thing everything appears as it should be but possibly there is a broken wire on a pad sensor. So I replaced both pad sensors. Still stupid light on. Disconnected the battery. Went out. Came right back. What gives. Been on since March!

bryce · 02-03-2012, 11:24 AM

^sorry for the late reply. It was just an i-drive/cbs error. the dealer was able to reset it after checking the brake pads/sensors. has been fine ever since

08-02-2011, 07:23 PM	#1
bryce Banned 114 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	Brake Pad Warning I happened to look at my service due mileage this morning, the front breaks had 5k miles, rears were 12k left. Upon starting my car this afternoon after work, the brake light stayed lit in the cluster and the nav displayed the message that the brake pads are worn to the minimum. My commute is 5 miles to work, its highly unlikely that my brakes wore down THAT much this morning. The mileage for the front and rear brakes now is just blank. Any ideas? It almost seems like a sensor went out, but is it feasible that all 4 brake sensors went out at the same time? Thanks in advance
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08-02-2011, 07:33 PM	#2
BKV122 Major 47 Rep 1,160 Posts Drives: E90 Join Date: Feb 2009 Location: NY iTrader: (1) Garage List 2006 330xi [9.50]	It is possible that the computer computed the wrong mileage left and the brake sensor tripped on the front pads. There are only 2 pad wear sensors, one in the front and one in the rear, i forget which side they are on __________________ Monaco Blue 330xi - Terra Interior/6-MT/Sport/Premium/Cold/CSL's/M3 Spoiler Lip/Black Kidney's
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08-03-2011, 09:43 PM	#3
Glim Captain 23 Rep 780 Posts Drives: 2006 330i & 2013 X5 35i Join Date: Jun 2011 Location: Victoria, BC iTrader: (0)	Front left (driver side) and rear right sensors They should not be blank, take it in and have them look at it. When the wear sensor triggers a pad replacement you should see a miles/km until end of pad life and a yellow warning when you start the car.
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12-15-2011, 01:47 PM	#4
bruning6 Private First Class 15 Rep 119 Posts Drives: 08 135i, 09 335i LCI Join Date: Mar 2011 Location: Lakes Region NH iTrader: (0)	Bryce did you ever get this taken care of? I know this is different but still its a wierd brake issue. In the 135i when it came off the trailer here in NH it had a low tire light - I found a nail in the RF tire. Pulled the wheel off and plugged the tire then when I reinstalled it the red Brake light was on the cluster but nothing in the warning section. Pulled the wheel back off and checked the brake pad sensor which appeared fine. Tried driving it light was still on. As you know the pads are/were mint front and back. Next week brought it into BMW to get the injector recall taken care of and had them take a peak they said the same thing everything appears as it should be but possibly there is a broken wire on a pad sensor. So I replaced both pad sensors. Still stupid light on. Disconnected the battery. Went out. Came right back. What gives. Been on since March!
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02-03-2012, 11:24 AM	#5
bryce Banned 114 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	^sorry for the late reply. It was just an i-drive/cbs error. the dealer was able to reset it after checking the brake pads/sensors. has been fine ever since
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