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Old October 7th, 2005, 05:36 PM   #1
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Question Brake wear light question..

hey.. my brake wear light came on the other day.. i've already ordered new pads, but don't have the time right now to install them.. i've only had my boxster for a couple months (got it used of course), and i was wondering how much is left on the pads when the light comes on?? thanks..
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Old October 7th, 2005, 05:42 PM   #2
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Actually you have quite a bit a brake material left when the light goes on.
I forget the exact amount since it will depend on what pads are currently on your car. You will probably need to order new sensors since at least one of them has been shorted out. That is how they work. It is a continuous circuit until it wears down and through. Now an open circuit, No way to repair...so you must get new ones.. Unless you can visually inspect and see which one is in need of replacement.
Or just override the sensors so the light will not come on at all. Then you just need to keep a visual inspection to see when they need replacement.
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Old October 7th, 2005, 05:54 PM   #3
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If the light just came on you may get lucky and not need to replace the sensor. The way it works is if the sensor wire is grounded or the circuit is open then the wear light comes on. There's a bit of time where the wire is in contact with the rotor (and therefore is grounded) but hasn't worn through the wire. In such a case you can reuse the sensor. If they need to be replaced they're about $15 each as I recall and can be replaced w/o removing the pads - which means they can be replaced after you do the brake job if desired.
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Old October 7th, 2005, 06:53 PM   #4
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Brake pads

When "sport driving" the brakes can get very hot. The brake pad material acts as an insulator to the metal the pad material is mounted on and the brake fluid. The thinner the pad the less insulation and the faster your brakes fade when "sport driving". So when Porsche recommends you to change your brake pads you may still have plenty of brake pad left for normal driving but find your brakes fading when "sport driving" due to the heated brake fluid. This is why Porsche recommends changing pads when there is still plenty of material left.
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Old October 7th, 2005, 09:15 PM   #5
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Simular Brake Question

Hi Guys, Simular Question
Occasionally my brakes Squeek, but my brake wear light has not illuminated. Should I take it to the shop or wait for the Light?
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Old October 7th, 2005, 09:49 PM   #6
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Squeaking pads under light braking is usually due to glazed pads and/or rotors. Braking hard a few times in a row will sometimes help reduce the problem. It's pretty rare that there's actually anything the dealer can do to alleviate the situation. Instead, the best solution is to be a bit more firm when using the brakes.
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