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arry911
Join Date: Nov 2011
Location: norfolk uk
Posts: 66
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No brake lights
I have read a few threads on this and its a common problem. So I thought I would look to see which switches on the m/c I needed and noticed the brake fluid was a bit low so I topped it up and the lights worked . What a bit of luck, I guess the pressure was a bit low
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06-12-2013, 07:25 AM
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Diss Member
Join Date: Jul 2002
Location: SC - (Aiken in the 'other' SC)
Posts: 5,020
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The level of the brake fluid has nothing to do with the brake lights unless it goes so low that you lose the ability to stop.
(On older cars with mechanical switches the level has nothing to do with the brake lights period.)
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- "Speed kills! How fast do you want to go?" - anon. - "If More is better then Too Much is just right!!!" - Mad Mac Durgeloh -- Wayne - 87 Carrera coupe -> The pooch. |
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06-12-2013, 08:01 AM
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Member 911 Anonymous
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It also helps to know year of your car.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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06-12-2013, 08:47 AM
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Registered
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aary
Replace both M/C switches, cheap fix. Many opinions on how to do it but when I changed mine years ago it was remove and replace. No bleeding needed.
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----------------------------- Ernie 81 SC |
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06-12-2013, 09:00 AM
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Senior Member
Join Date: Nov 2000
Location: Great NorthWest
Posts: 3,950
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Without any model year info I am guessing, but assume that upping the fluid caused pressure to be built into the switch/switches (year?) and allow the lights to work again.
Not sure what a bit low is but if you are losing fluid you want to look into that. It is not like engine oil - you should not lose brake fluid.
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'78 Targa in Minerva Blue |
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06-12-2013, 09:02 AM
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arry911
Join Date: Nov 2011
Location: norfolk uk
Posts: 66
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Hi should have said its a 1982 sc with the two switches. I filled up just under 1cm of fluid ,there is no sign off fluid loss. I have not topped it up in two years so I would think it's just the brake pads wearing down so using more fluid to fill the brake pistons. Well the main thing is my brakes work ok and so do my brake lights.
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06-12-2013, 11:13 AM
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Registered
Join Date: Jun 2010
Location: North Bay, ON
Posts: 472
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It takes a moderate amount of pedal pressure to activate those switches. Light pressure won't turn them on. Perhaps you weren't quite pressing hard enough.
That amount of fluid will not have any effect.
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1986 3.2 to 3.4 conversion |
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06-12-2013, 01:28 PM
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Spiderman
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Order some switches
What others have said. Adding 1cm of fluid and they work is a red herring. Do yourself a favor and order switches. Your brake lights will not be working again very soon and changing switches is easy if you have them on hand.
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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06-12-2013, 01:40 PM
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Registered
Join Date: Feb 2004
Location: Littleton, Colorado
Posts: 366
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What I have learned is that the world does not need to know we are braking until we are really BREAKING!
I have tried to find a way to make my brake light switches work with a more sensitive touch on my '84, but no joy yet.
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1984 3.2 Cab (now toy) 1975 911S (old toy) Mercedes E350 W4 (snow car) 2007 911 Turbo (water and air pumper) 2012 Panamera 4S (for the wife, I swear) |
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06-12-2013, 05:26 PM
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Marble Grey
1981 Porsche 911 SC
Money Pit
