Brake bleed causing ABS light to activate (1 Viewer)

[Timboy14]

Anyone know why the ABS light temporarily came on while bleeding the rear brakes?

Procedure followed was ignition in On position. Son pushed the pedal, I cracked the left rear bleeder screw, stream came out, ABS light activated, pretty sure there was a ding too, closed the bleeder, son off the pedal. ABS alarm did stop straight away and hasn't come back on when driving. Brakes seems fine.

I was pretty careful to avoid getting the reservoir level too low.

Anything to worry about, or normal?

 

[GOLIGHTLY]

Only thing I can think is fluid level tbh

 

[Timboy14]

Only thing I can think is fluid level tbh

Yeah I think your right. The level did get down to around Min, maybe a touch below. Hopefully it was just a friendly alarm and no air got trapped in the ABS module.

Thanks for your reply.

 

[GOLIGHTLY]

Yeah I think your right. The level did get down to around Min, maybe a touch below. Hopefully it was just a friendly alarm and no air got trapped in the ABS module.

Thanks for your reply.

You bet, throw some extra in and keep us posted.

 

[Timboy14]

ABS light never came back on driving about. Interestingly when I bled the rears more slowly (like open close open etc etc on the bleeder) rather than one longer continuous flow there were no ABS alarms. So might just be a standard warning.

 

[2001LC]

When flushing from a rear bleeder. Fluid comes out fast, provided bleeder not clogged. So fast, pressure drops faster the booster pump can keep up with. So we get a brake low pressure alarm & lights. Once bleeder closed, pressure builds and alarm goes off.