Question about 2003 Lexus GS

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I don't know should i get my Lexus GS300 front brake pad changed when the maintainance service said there were only 4 out of 11. I am not an enginneer but the car only drove for 17000 km but the rear brake pad only wore about 2 out of 10. How do I know why the front brake pad worn so fast than rear one

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Well thats a good question but the answer is so simple .
When you apply the brakes the front of the car dips down and the faster you go the harder you have to brake, the more it digs in and the full weight is also in the front (ie engine assy) so it does three times the work, and the rears only brake softly so as you dont skid and to hold the car straight at normal braking in a straight line..SO thats why they last for 3 times of the fronts.
But if you get the front brakes done then also make sure thay mechine the front rotors (Dont just have new pads) and then your brakes will last a long time without any problems.But you dont need the fronts done till theyget down to the wear pad.(you will know).
Have a good day Ron

Posted on Nov 12, 2009

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Check that your brake cylinder is not sticking after driving feel your wheel nuts if hot that could be your problem

Posted on Nov 12, 2009

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How do I bleed the brakes on a 99 gs300

I am not familiar with Lexus, however braking systems are usually the same for all cars.
I first suggest purchasing a service repair manual for your vehicle that will give you step by step instructions. Also, I suggest calling a dealer (mechanic, or experienced Lexus mechanic to see is if this is a procedure that can be done at home). Some newer, "classy" cars are designed differently and require special tools and/or procedures for repairs such as this.
There are bleeder valves (zirk fittings) on the backside of the brake hub. It will require (usually) an 8 millimeter opened end wreng (line wrench if you have access to one); otherwise a regular open end will work.
Also, you will need a second person to pump the brakes; you loosen the bleeder valve until fluid comes out and no air. Do this for each side (front and back) until no air is released. In addition, make sure you have extra brake fluid, as you will need to make sure the resevoir is full when finished, and may need to add between bleeding each side.
Follow these instruction for each side, then take the car for a short drive (don't go too far from place of service; home, shop etc). Then bring it back and bleed the same way one more time.
If you have any questions, please let me know.

Aug 19, 2011 | Lexus GS 300 Cars & Trucks

1 Answer

2003 Lexus es300 has high pitch squeel in front driver side tire, stops when brakes are applied or when I turn the wheel

u need front brake pads...the noise u hear is a warning sensor that is on the brake will touch the brake rotor when the brake pads r getting very low an about ready to start grinding into the brake rotors

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Replacing brake pads involves pushing the pistons all the way back into the the caliper. This will force fluid up into the master cylinder. Sometimes it also allows some air to get past the piston seal and cause 'soft' pedal. In this case bleeding is required. Anyway the brake fliud should be completely changed by pressure bleeding at this time.

Mar 19, 2010 | 1994 Lexus GS 300

1 Answer

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Sure we can help....but tell us what the problem is?

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if they are both disc pads then it would be the same but if you have drum brakes at the rear then it would be different.

tnx 4 using fixya,


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1 Answer

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Possible causes- low spot on the rotors. Caliper pins not sliding with pulsation. May not need to replace pads.

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