Brake pad sensors

davyk31 · 02-23-2012, 06:25 AM

Never changed the pads in a BMW before and assumed there was a sensor in each pad therefore you need to buy 4 new ones.

Seems however its only one sensor per axle from quotes I have been getting, can anyone confirm this?

Bee Pee · 02-23-2012, 06:38 AM

Confirmed, only 1 sensor per axle so you will need a pair as opposed to 4

doughboy · 02-23-2012, 06:49 AM

Never knew that!

First lesson of the day.

davyk31 · 02-23-2012, 09:46 AM

Reason I thought there were 4 was, what happens if one side is sticking a bit and thus the pad wears more, if the sensor is on the other side could this not cause an issue?

m1bjr · 02-23-2012, 11:11 AM

Quote:

Originally Posted by davyk31

Reason I thought there were 4 was, what happens if one side is sticking a bit and thus the pad wears more, if the sensor is on the other side could this not cause an issue?

Yes.

But they are a service aid only, not a substitute for correct testing and maintenance schedules

jabroni80 · 02-24-2012, 05:54 PM

Just changed my front pads and discs. Only one sensor on the nearside caliper. I got pagid discs, pads and sensor for just under 100 quid. 30 Min job

02-23-2012, 06:25 AM	#1
davyk31 Major General 1077 Rep 6,994 Posts Drives: Macan GTS :-) & F40 M135i Join Date: Sep 2009 Location: Northern Ireland iTrader: (0)	Brake pad sensors Never changed the pads in a BMW before and assumed there was a sensor in each pad therefore you need to buy 4 new ones. Seems however its only one sensor per axle from quotes I have been getting, can anyone confirm this?
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02-23-2012, 06:38 AM	#2
Bee Pee Brigadier General 1964 Rep 4,633 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Confirmed, only 1 sensor per axle so you will need a pair as opposed to 4
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02-23-2012, 06:49 AM	#3
doughboy Major General 1578 Rep 8,971 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Never knew that! First lesson of the day.
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02-23-2012, 09:46 AM	#4
davyk31 Major General 1077 Rep 6,994 Posts Drives: Macan GTS :-) & F40 M135i Join Date: Sep 2009 Location: Northern Ireland iTrader: (0)	Reason I thought there were 4 was, what happens if one side is sticking a bit and thus the pad wears more, if the sensor is on the other side could this not cause an issue?
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02-24-2012, 05:54 PM	#6
jabroni80 First Lieutenant 25 Rep 342 Posts Drives: F11 520 M Sport Touring Join Date: Feb 2011 Location: Glasgow iTrader: (0)	Just changed my front pads and discs. Only one sensor on the nearside caliper. I got pagid discs, pads and sensor for just under 100 quid. 30 Min job
	Appreciate 0 Quote