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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 01-25-2006, 12:13 AM   #1 (permalink)
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What Is This???

Hey, i have a '94 325ic. i was just driving and this popped up... what is it? and what do i have to do to fix it???
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Old 01-25-2006, 12:17 AM   #2 (permalink)
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brakes
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Old 01-25-2006, 12:18 AM   #3 (permalink)
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yea, i was thinking that... do i have to change them fast or what??? or can i take some time.. cuz im kinda broke...
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Old 01-25-2006, 12:18 AM   #4 (permalink)
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thats the brake wear sensor... its obviously time to change the pads.. maybe rotors.. and sensors..
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Old 01-25-2006, 12:18 AM   #5 (permalink)
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is it just the calipers? or fluid? or discs or what?
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Old 01-25-2006, 12:19 AM   #6 (permalink)
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Dang it. this sucks. cuz i like just got my car. so thats a pain
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Old 01-25-2006, 12:21 AM   #7 (permalink)
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Originally Posted by rushindood
Dang it. this sucks. cuz i like just got my car. so thats a pain
lol put it this way...u can upgrade to better pads...the sensor is just in the pads...but have the rotors checked just in case...
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Old 01-25-2006, 12:26 AM   #8 (permalink)
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oh yea. definatelly. if i need new pads then im gonna get some really nice racing ones. any suggestions?
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Old 01-25-2006, 12:31 AM   #9 (permalink)
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oh yea. definatelly. if i need new pads then im gonna get some really nice racing ones. any suggestions?
http://www.understeer.com/onlinestore-brakes.shtml
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Old 01-25-2006, 12:33 AM   #10 (permalink)
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sweet.thanx
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Old 01-25-2006, 12:34 AM   #11 (permalink)
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It means your pads should be replaced. Check the rotors and replace as necessary. The sensors are probably okay.

The lights are explained in the owner's manual. If you don't have one, good idea to purchase one, along with a Bentley manual. Good things to have.
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Old 01-25-2006, 12:52 AM   #12 (permalink)
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Quote:
Originally Posted by rushindood
oh yea. definatelly. if i need new pads then im gonna get some really nice racing ones. any suggestions?
You know racing pads suck ass for stree use right? Racing pads are designed to function when they are hot. Driving on the street doesn't get them anywhere near the proper temp and will actually increase your stopping distance comapired to stock pads on the street.

That light indicates that the brake pad wear sensor has been worn through by the rotor and at a minimum you are going to need new pads and a wear sensor.
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Old 01-25-2006, 01:14 AM   #13 (permalink)
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You know racing pads suck ass for stree use right? Racing pads are designed to function when they are hot. Driving on the street doesn't get them anywhere near the proper temp and will actually increase your stopping distance comapired to stock pads on the street.

That light indicates that the brake pad wear sensor has been worn through by the rotor and at a minimum you are going to need new pads and a wear sensor.

hence the reason i linked him to understeers for street pads

o yea i forgot the wear sensor
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Old 01-25-2006, 06:21 AM   #14 (permalink)
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You don't necessarily need to replace the wear sensor. If it has just popped up, it will probably be okay. The sensor is basically a wire going to ground. The one end (plastic coated) is clipped on the inside brake pad. As the brakes wear, the rotor gets closer. When it gets close enough to wear the plastic coating down, the metal inside contacts the rotor, thus sending a ground that lights the light. If you haven't driven all that much, it's not that worn down. However, if you feel uncomfortable about it, It's not very expensive.

There are two sensors. The front one is on the driver's side. The rear one is on the passenger's side. The light doesn't tell you which came on. I always check the front first, they wear down the quickest.
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Old 01-25-2006, 11:02 AM   #15 (permalink)
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Quote:
Originally Posted by tomctx
You don't necessarily need to replace the wear sensor. If it has just popped up, it will probably be okay. The sensor is basically a wire going to ground. The one end (plastic coated) is clipped on the inside brake pad. As the brakes wear, the rotor gets closer. When it gets close enough to wear the plastic coating down, the metal inside contacts the rotor, thus sending a ground that lights the light. If you haven't driven all that much, it's not that worn down. However, if you feel uncomfortable about it, It's not very expensive.

There are two sensors. The front one is on the driver's side. The rear one is on the passenger's side. The light doesn't tell you which came on. I always check the front first, they wear down the quickest.
No. When the lining light comes one it means that one of the sensors has work down enough to go through the wire in the sensor. The creates an open circuit which trigers the light. The sensor is only $9-$13 anyways, don't be a cheep ass, just get a new one.
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