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#1
04-06-2007, 05:06 PM
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Stop lamp light
Hey guys,
Having an issue with my stop lamp light on the instrument panel lighting up at times, while the lights all work, it seems to be irregular and most of the time I noticed it goes off when the car is cold or its cold outside... any fixes, or things I should check about this? Thanks in advance, -Sov13t.
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Subaru SVX 94' Laguna Blue - 8.5 C/R Built Motor, 6spd 
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#2
04-06-2007, 05:19 PM
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Quote:
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3 turbos, 28 cylinders, 96 valves, 18 cams, 1400hp/1600ftlbs: '09 Outback XT / '06 Outback Sedan / '02 WRX / '94 SVX / '01 F-250 SuperDuty
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#3
04-06-2007, 05:36 PM
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Pop the hood, remove the brake master cylinder cap, look at the diaphragm,
and check this link.  http://www.subaru-svx.net/photos/use...svxfiles|42164
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www.svxfiles.com The first SuperCharged SVX,  the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway  Fiberglass Hood thread My locker 4.44 Swap link
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#4
04-06-2007, 05:49 PM
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I think you've got the wrong warning light, sperry...
The Stop Lamp light allegedly lights when one of the brake lights doesn't. Unfortunately, lately, I've been seeing mine come on now and then, even with four new functioning bulbs, just like Sov13t described. I haven't pursued it, but I liked <this post>.
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Disclaimer: The above post is on the internet. Last edited by LetItSnow; 04-06-2007 at 05:52 PM.
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#5
04-06-2007, 06:03 PM
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Quote:
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British vehicles are my last ditch attempt to keep the nasty Italian thoughts in my mind at bay. So far its working.
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#6
04-06-2007, 06:20 PM
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Or you can go to the write up in the How-To Documents (that was just added) for more information.
It is under Brakes. Or, you can GO HERE to see it. Good luck.
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. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19
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#7
04-06-2007, 06:42 PM
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Quote:
I am left wondering, though, why the BRAKE! light doesn't handle this, and how the STOP LAMP light would illuminate from low brake fluid, when the brake fluid switch isn't part of its circuit, per the service manual.  EDIT: Just checked my brake cap diaphragm. It's happily inside its cap.
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Disclaimer: The above post is on the internet. Last edited by LetItSnow; 04-06-2007 at 06:51 PM.
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#8
04-06-2007, 08:56 PM
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The stop lamp checker (which controls the STOP light in the dash) uses the amperage difference between the trunk panel and the two body mounted stop lights to determine if a bulb is bad. Very similar design to a GFCI outlet in your house.
If you have unmatched wattage bulbs, the difference in amperage can be enough to trigger the checker even if all four bulbs work. Bulbs are dirt cheap so when I have one go out, I replace all four with the same brand. Here is how the stop lamp checker circuit operates: The rear stop light sensor works by separating the stop lamps into two circuits, each with two bulbs. The two center panel lights are one circuit and the two outside lights are the other. The two circuits each go into a sensor and each current draw is measured. If it is not in balance (ie, one circuit has two bulbs, the other only has one working) the STOP lamp on the dash is triggered and illuminates. The manual tells you the only "fooled" instance. If one bulb from the center panel is burned out and one bulb on an outer light is burned out, the indicator will not come on. Sometimes, after one bulb in the circuit causes the STOP light to illuminate, the second bulb burning out in the same circuit would cause the STOP light to go out. It also has a fail-safe system so if all four bulbs are burned out (zero current flow) it triggers the STOP light. If you put higher wattage bulbs in the center panel, but regular bulbs in the outer lights, it will trigger an indicator, even though all four bulbs light up. If you replace your lights with LEDs, the light will trigger because the LEDs use next to no current, so the sensor thinks all four bulbs are burned out. .
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. Subaru Ambassador 1996 Polo Green LSi #216..138,100 miles...SOLD JFICX8659TH100216.....Date of Manufacture: November 16, 1995..... Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan In-Service Date: January 2, 1997 "The Pristine Green Polo Machine” First Polo Green on the Network First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000) First 5000K HID factory fog lights (2007) First SVX JDM BBS wheels on a USDM SVX (2013) HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler. R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016  2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback  2007 Mazda Miata MX-5 PRHT...102,000 miles. Plenty of parts, service and windshields. 4th Registered Network member —2/21/2001 My NEW locker..I...My Email..I..Wikipedia/SVX . .
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#9
04-06-2007, 10:56 PM
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Had this too, I pulled the bulbs used some contact cleaner and presto, havent seen it since then. Easy fix if it works for you, if not
back to the other options. I always try the easiest, simplest solution first and work my way up.
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