Question about Subaru Impreza

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Ive got a 1983 Subaru GL wagon, Automatic trans. non turbo. My problem is that the brake fluid, stop lam, and A.T. Oil temp warning lights on the dash stay on constantly. I noticed that whenand if they decide t all turn off at once, the vlotage gauge reads fine, but whenever those lights are on my voltage gauge only read arioun 8 volts. Is there a relay I should look into, Is there a possible short in one of the wires causing it to ground our cross circuit?

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  • Kylie DeForest
    Kylie DeForest Jan 20, 2013

    I promise you it;s your alternator. I had the same issue and the guys from Ultimate Subaru Messageboard kept telling me alternator. well I checked and sure enough i had fried two out of three diodes, the diodes arnt expensive but its a tedious fix. Definetly check your ALT!! I promise! All the warning lights will subside when the alt. is swapped out.



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  • Subaru Master
  • 5,370 Answers

Yes it may be the wires are shorting or its actually the problem with instrument cluster.
Also get the vehicle scanned for any error codes stored in computer this will confirm whether is short circuit issue or actual problem:------
I suggest you few help links with accurate solutions to refer/go through:----Click the link below:------

Battery and brake Warning lights on Dash
--------------2002 Ford Windstar: Brake Warning Light ON dash?
-------------ABS & Brake warning lights remains steady on dash?
-----------Chevrolet Tahoe Hood open warning on dash and alarm sounds?
-----------2005 Chevy Impala: Service Vehicle Soon Warning Light? -------------- Malfunction Indicator Light ON
-----------Car Runs Fine But Check Engine light is ON?

Check engine light with codes P2195 and P2197?

How to Read Codes from Check Engine Light?
-------------These will help.Thanks.

Posted on Nov 26, 2012


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SOURCE: Will not charge

you will get some funny answers from some of these "experts " The symptoms suggest to me with out much doubt that the regulator is not doing its job correctly ,consistently.Iwould take it to an AUTO ELECTRICIAN and get it tested in situ.... there is only 4 things it can be , wireing ---battery---alternator-----regulator and of those the reg. is the only one that chops and changes. it will cost little for a sparky to check the reg ,. AND I WOULD LIKE TO KNOW THE OUTCOME

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SOURCE: i have a 2003 impala and its reading 5 volt

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SOURCE: warning light on dash stays on, I don't have a manual to refer to

Your brake light is out.
Check brake lights and repl. burnt light bulb .

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