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Old 08-08-2010, 11:51 PM
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Default Brake Warning Light

Is the low fliud warning light, the same as the park brake light?

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Old 08-09-2010, 12:41 AM
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There is no low fluid warning. The brake warning light comes on when either the front or rear brake system is not getting pressure. Usually this means there is a leak somewhere and the M/C has run completely dry on one side. The electrical connection for this is at the brake block that is mounted on the frame (at least on the LH drive cars.)

The same warning light also comes on when the E-brake is depressed.

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Old 08-09-2010, 09:55 AM
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The service manual and electric diagram calls it: Low brake fluid switch

But the switch being at a junction block, they only thing it can check is the pressure, like said above. They could have called it Low brake pressure...

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Old 08-09-2010, 12:55 PM
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Never realized they actually called it that. I guess it is sort of a very low, low, low level (as in the brakes aren't working) switch.

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Old 08-09-2010, 01:13 PM
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You'll notice something's wrong with the brakes wayyyyy before that dumb light comes up. Do you really need a light telling you; hey dude, I think your brakes aint workin'..

So yeah, I put it in the same category as the standard idiot lights . Only use IMO is for the parking brake.


Last edited by MescaBug; 08-09-2010 at 01:26 PM.
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Old 08-09-2010, 06:25 PM
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Thanks all, only asked as I have fitted disc brakes and had to connect up the switch on the proportioning valve. My distribution block on the chassis rail is now gone and the wire was never connected up to it in any case. Thought I may as well hook up the new switch to give it a finished look, as you say, I'll know way before the light tells me anything is wrong.

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Old 08-10-2010, 04:08 AM
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It lets you know that the parking break is on.

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Old 08-18-2010, 02:04 AM
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Quote:
Originally Posted by MescaBug View Post
You'll notice something's wrong with the brakes wayyyyy before that dumb light comes up. Do you really need a light telling you; hey dude, I think your brakes aint workin'..

So yeah, I put it in the same category as the standard idiot lights . Only use IMO is for the parking brake.
Just for a record, I had a 77 cutlass supreme (great car), and I was sitting at a light one day and all of the sudden the brake light came on. Brakes felt ok, maybe a little mushy. Replaced the master and it was fine after that.

I assume the system in the cutlass was similar/identical to our GTO systems.

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