Question about 1998 Lexus LS 400

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Brake Pad Replacement, Resurface Rotors for your 1998 Lexus LS400

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What is the question???? I will guess...please don't hammer my raiting for not answering the "right question" ...

So, if you are doing a break job, and you are wondering if the rotors need to be resurfaced or machined? okay, first thing you need to do is to take a micrometer and check the thickness of the rotor. There will be minimum machineable thicknesess. If your rotor is thinner than the minnimum allowable thickness, you will not be able to machine it, and it will have to be replaced. Looking at the year of your vehicle, when were the breaks last done on it? if it was quite a while might want to consider replacing the rotors as well. If the question is on how to replace the break pads, i can't realy help you too much there, i can tell you the very basics, but you kinda just have to see it. So if you get stuck, take one side apart at a time.... If you need help on doing the actual pad change, ask back. but the basics are that you have to unbolt the caliper (leave the braket on) and pull the pads out while making sure to keep and eye on how the little springs/clips go in (if you have them, not all vehicles do). Also, caution on which break pads you put where. Some types are specific on which side of the rotor they have to be on. If this is the case, they "usually" give you instructions....Best of luck

Posted on May 30, 2010


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Im driving a 2000 Chrysler 300M> I just had the break done and know I'm hearing a hissing noise when I break. What could this be and will it be very expensive to fix?

First, your question has to be translated. Do you mean brake(s)?

If so, and the person who did the brake job resurfaced the rotors, then you're probably hearing the pad lining rubbing the rough rotor surface when you apply the brakes. This is because the machines they use to resurface the rotors don't put the same smooth finish on them like a new one has. The rough surface in contact with the pad lining will make a noticeable sound until the rotors are burnished (worn smooth) from use.

On a side note: It's really not a very good idea to resurface brake rotors. They end up thinner, which makes heat dissapation more difficult. Rotors aren't that expensive. It's always best to replace them rather than resurfacing them.

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if your pedal pulsates when your stopping you have one or more of your brake rotors worped you can get them resurface sometimes but i recommend yust replacing them you can get them auto zone,or advance auto

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brake pads (especially rear) can become glazed. causes can be driving style, replacement of pads and no rotor resurface, or excessive heat due to binding. if you are sure pad life is good u can try to remove pads scuff the pad surface with sand paper and reinstall. if that takes care of the noise u may want to have rotors resurfaced to help prevent re-glazing.

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The brake wear indicator is a small metal stone-like sensor that attaches to the brake pad. Once the pad wears down to a certain level, it begins wearing into the sensor, breaking the circuit open.

Once the light has come on, the appropriate sensor (front or rear) must be replaced to return functionality.
Factory brake pads usually come with new sensors. Aftermarkets do not, and often have no provisions for attaching them either.

Alternately, you can bypass the brake level sensors by splicing the two wires for the sensor together. You will no longer have brake level warnings if you do this however.

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