M. Requin

Replacing the brake master cylinder on my 86.5 and cleaning the brake master cylinder reservoir (see my thread by that title) I started to wonder what the push button switch on top of the reservoir is for. The WSM identifies a "brake fluid check switch" which grounds pin 23 of the CI module (black side) while pressed, but that is all I have been able to learn. Anyone know what this is for?

Callum_GT

Always thought it was to check the bulb works on the dash!

928Myles

My understanding is that it is to check that the low fluid level warning system is working.

Myles

M. Requin

Gentlemen, I believe we have two winners here!