Penny

Interesting

No more noise

and this is what I hear on mine....

As Michael Cain once said " Not many people know that "

http://www.diy-time.com/automotive/toyota/faulty-brake-actuator-brake-booster-pump-on-toyota-lexus-cars/

I will be removing the light levelling parts if anyone is interested.

These are not needed on my SC430.....different fixed lights were fitted.

but these videos might help others.

Fuse 21 - https://www.youtube.com/watch?v=tsTtv_enqkc

Replacing the level motor - https://www.youtube.com/watch?v=TD79Rv85l4w

Level sensor - https://www.youtube.com/watch?v=FVLpf2SVusI
 

Only $65 for this kit........but that works out to $200 with shipping and taxes

Chap on the UK bay does replacement motor rebuilds

You mention "It should be possible for the pressure switch to be removed and external pressure applied to the system".....can you give details please before I decide to pull out the unit. 

On 7/25/2021 at 11:27 AM, ColinBarber said:

 You really need to get the error code(s) to give you a starting point.

Fault codes

C1223        C1252       C1256

Has anyone else had this problem and what was the repairs needed?

Can you tell me Colin if you can hear your pump motor running continuously

with just the ignition and engine not running.

My pump motor runs for a few seconds then switches off.....it does this cycle with the ign key on first position - ie not engine running.

U-tube video mentions the pump motor commutator wear can possibly give this pulsing and shows how to rebuild with new brushes etc

Noise from brake pump area and coupled with several  dash lights now showing

I can also feel the red pipe into the ABS pump pulsing when the engine is running

Any ideas on what is wrong with this  52 plate car ?