Brakes

[blender]

first post so i hope i am doing this right, i have a 99 ls400 which is perfect

but over the last month i have a vibration when brake pedal is pressed

when braking over 25mph,the vibration is felt through the pedal,local

garage has checked everything and even had it on rolling road and

it is perfect, pads are good and no warped discs,checked all joints and bushes

but cant find anything, he and myself at loss to what is causing this

hope someone can help me. thankyou

[steve2006]

Hello and welcome to the LOC.

The lack of replies usually means no one knows what the problem is likely to be, not that we are being ignorant to a new member.

It seems strange that the fault cannot be made to appear on a rolling road, have you asked your mechanic to take the car out on a road test?

There have been cases where a fault in the ABS can cause strange vibrations under low speed braking conditions but this normally flags up a fault code and the ABS light will come on constantly to indicate this but it may be worth having a diagnostic check performed to see if there are any stored codes which may help diagnosis.

Also swop your tyres front to back to eliminate a possible cause with them.

This is assuming that the vibration is being felt through the brake pedal as other factors such as engine and transmission mounts can cause strange knocking/vibration effects.