me_ccie

I just picked up a LS460 last week with 12000 miles and was wondering if a sound I'm hearing while holding the brake is normal. The brakes aren't pulsing or anything but while stopped and holding the brake I hear a kind of a knock sound. If I use the hold I don't hear any sound.

any assistance / guidance is appreciated.

rominl

iTrader: (4)

welcome to CL

when you said you hold the brake (using your foot), did you try pressing the pedal harder and if the sound is still there?

me_ccie

Thank you for the greeting. If I press the pedal to the floor, no i don't hear the sound. Should I take it in to the dealer?

rominl

iTrader: (4)

umm, could it be that you are not depressing on the brakes hard enough then? the ls460 has sensitive brakes (due to ECB), so by pressing it a bit, you are stopping the car pretty well already. but sometimes if you are not pressing hard enough, the brakes are actually marginally stopping.

i don't know if that's the exact cause, but the fact that if you press harder there is no sound, it seems like it has to do with brake pads?

me_ccie

hmm, interesting, is it common to have the brake pads replaced at 12000 miles? BTW, thank you for responding. I think I'll take it in to a mechanic friend to evaluate the sound prior to taking it to the dealer.

rominl

iTrader: (4)

yeah it's always good to get 3rd party comment

12k miles for pads, i think that's on the low side, i would imagine the pads to go for longer

tennisstar

try and use the BRAKE HOLD feature....does it still make noise? then 4 sure i'd take it in....otherwise, probably like henry said, u not pressing hard enough?

rominl

iTrader: (4)

in his first post i thought he said when using hold he doesn't get the noise