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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Brake pad sensors



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      02-23-2012, 06:25 AM   #1
davyk31
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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
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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
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Never knew that!

First lesson of the day.
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      02-23-2012, 09:46 AM   #4
davyk31
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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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      02-23-2012, 11:11 AM   #5
m1bjr
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Quote:
Originally Posted by davyk31 View Post
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
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      02-24-2012, 05:54 PM   #6
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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
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