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Matt, Mechanical Engineer
Category: Toyota
Satisfied Customers: 22732
Experience:  BEng hons Mech engineering, in auto industry 22 years
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just fitted new discs and pads 2009 toyota avensis and i

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just fitted new discs and pads 2009 toyota avensis and i cant get it to bleed front left wheel and it now bringing check vsc on dash .is there a probblem with master cylinder which was fine b4 i worked on car.or could i have blown seals in the cylinder coz no fluid at left front but plenty at right front .


this sounds like there's a lot of air trapped in the ABS pump

the dealer method of solving this is to use the diagnostic system to run the ABS pump and bleed the calipers as normal

however I've had success in the past by taking the car for a short drive and hitting the brake pedal very hard to get the ABS to trigger and so run the pump

then bleed that corner again to get the air out

you may need to do this a few times
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Customer: replied 3 years ago.

ive opened the brake line at master cylinder nothing at all on one line but the other has good pressure.


OK if the there's no fluid at the master then the master needs to come off and apart for inspection / new seals - or replace it entirely
Customer: replied 3 years ago.

i pressure bled it this time and its fine thanx a million.