I just got my hands on a very clean '85 RX-7 S (82,000 miles). I had to replace the back brakes and bled the system but I am guessing I did not keep the reservoir full enough while bleeding and triggered the sensor for the "BRAKE" warning lamp.

Question, how does one re-set this sensor to get the light to turn off?

Thanks in advance for the help.

Craig

 

welcome to the board.

i don't think there is anything to RESET on the Gen I cars, but i won't swear to it. i only learned in the last 12 months that they have a TPS.

anyway, with regard to your issue, if the reservoir is full enough and there are no shorts in the sensor circuit, the only other place i can think to check is where it wires in to the e-brake. since you also mentioned your rear brakes, i would say check go ahead and check the e-brake.

 

Thanks for the welcome.

I took a closer look at the master cylinder. There is a plastic disc floating in the reservoir that looks like it has a magnet in the center of it. There is a black clip that has 2 wires coming out of it and it goes all the way through the plastic reservoir in its very own hole.

I am guessing that the disc with the magnet somehow closes the circuit if the brake fluid level gets too low. I would have thought that once you replenish the fluid the disc would open the circuit and turn the brake light off. I cant really see to the bottom of the reservoir as I used super blue brake fluid.

maybe there is a second magnet that gets left behind when the level gets too low?

curious.

craig

 

I'd re-bleed the whole system again and see if the light goes off.

 

OK, now I feel pretty stupid, the e-brake lever was not all the way down...

 

Happens to the best of us. I've tried starting push mowers on air before lol

 

/\... he also looked for the gas tank on his electric lawnmower for 3 hours...(sorry man!..I pictured that and started laughing!)

 

LOL, thats great. I work on them for a living right now, i could tell you some stories lol

Such as, when i first started, was working on a 2 stroke mower, coworker said don't forget to change the oil...needless to say i wasted bout 2 minutes looking for it before it clicked in my head LOL

 

I'm, still trying to change the wheels on my snowmobile..it's summer..lol!