Brake Light on Dash

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NuclearBacon
Second Gear
Posts: 478
Joined: Wed Nov 09, 2005 5:50 am
Location: Chico, California
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Brake Light on Dash

Post by NuclearBacon »

I read on Laurals post and one other, but on the way to school today (40 degrees out) parked the car, and the brake light went on the dash. when i get out to the car, things i'll check before turning the key to go home are:

1) Brake fluid resevior. full? EMPTY for some reason???
2) Bulbs
3) pads (through rims)

i installed new coilovers during the summer and the car has only been driven about 3000 miles since then, and the brakes were bled then. i'm thinking i have low pads.... but not dangerously low?

just looking for other culprits. thanks!!

92 EJ22-T touring wagon

Luigi
NuclearBacon
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Location: Chico, California
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Post by NuclearBacon »

to answer my own question, as quoted from the 92 FSM:

ahem...

"Under normal conditions, the float remains above the reed switch, and thr magnetic force from the permanent magnet in the float is unable to activate it. therefore, the circuit is kept open, and the warning light remains off. the float lowers as the brake fluid level lowers and if it falls below the specified fluid level [approx 30 mm (1.18in) below the MAX level line] the reed switch will be activated by the perminent magnet, closing the circuit. in this event, the warning light comes on and warns the driver of a reduction of the brake fluid level.

However, the lamp may be lighted momentarily even when the brake fluid surface is still above the specified level, if the vehicle body tilts of swings largely. "
IronMonkeyL255
Fourth Gear
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Post by IronMonkeyL255 »

My brake light would come on when I am flogging it and using the brakes alot. I think the liner comes out of the lid and pushes the float down. Just taking off the cap will fix it for me.
Disclaimer: If anything I post is inaccurate, please correct me. I do not wish to add to the misinformation floating around on the internet.

That being said, everything I post is accurate to the best of my knowledge.

Rio Red '91 Legacy SS
mattyg41383
First Gear
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Post by mattyg41383 »

something else to keep an eye on... if the "brake" light and "battery" light come on together, but intermittantly, could be alternator on its way out. (i had to deal with this about a month or so ago)
-Matt
1993 Legacy SS - auto
1997 Impreza coupe
1986 XT - 14.5s @ 95mph
1990 Legacy wagon "the Red Dragon" -sold (300K miles and it lives on)
entirelyturbo
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Post by entirelyturbo »

Change your brake fluid.

The moisture in the old brake fluid condenses when it gets cold (40 degrees will definitely do it) and can trip the sensor and make it register a low brake fluid level. If you have your brake fluid changed, I can almost guarantee it will go away.
"Der Wahnsinn ist nur eine schmale Brücke/die Ufer sind Vernunft und Trieb"

*Formerly DerFahrer*

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