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Old 05-23-2019, 07:53 PM   #94
Aqua Puttana
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Default Re: Replacement of front brake pads and rotor

Originally Posted by zaskarkid View Post
when replacing rotors and pads, is it necessary to bleed the brake system?
It might be needed.

You should open the bleeder screws before compressing the pads/cylinders back into the caliper. If you don't open the bleed screws you risk pushing dirty brake fluid back into the CAB aka ABS valve module. (Thanks Dennis!) Getting crud back in the CAB module can ruin your day.

When the bleeders are opened there is some risk of air intrusion so the fluid should be bled. If you choose not to open the bleeders, risk the CAB module, and just compress the brake pads back, then no bleeding is needed.

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