4double0

iTrader: (1)

Everytime I go over a bump of any sort I hear a rattling sound from the rear of the GS. When I go over the bumps and press on the breaks the sound disappear. The lexus dealership changed the rear breaks a couple of weeks ago, could they have left something loose? Any ideas of what this problem may be?

ballin

First thing is take it back to the dealer ASAP. I'll tell you what it could be because the same thing happened to me a couple of days ago. Theres three things that holds the pads in other then the calipers. The anti-squeal springs that pushes the pads away from the rotors. The wafer spring(lack of terms) that puts pressure down on the pads. The pin that locks everything and slides into the eye of the caliper, pads and wafer springs. I think Lexus techs didn't put it in tight and the wafer spring came loose causing the chatter over bumps. Have them look at that and replace it.

4double0

iTrader: (1)

ballin, thanks for the reply.

Fa-suto

If your brakes are working fine and you notice the rattlin sound only when you go over bumps but it disappears as soon as you step on the breaks then its more then likely the Anti-Rattle Spring that applies pressure down on your brake pads is either broken or missing.

Its nothing serious aside from the agonizing noise that you will hear along with everyone else who drives alongside you.

joshoowa

iTrader: (1)

i only noticed one spring when i didnt my change. idiotic me i took it off and didnt put it back on. i havent notice any squeal noises yet.

joshoowa

iTrader: (1)

top of that the clasps holding down the pads seem very tight i really doubt that weak spring can actually push back the pads. respectfully speaking i have changed hondas and infinitis and have not noticed a spring on there brake setup