Don't do anything to your transmission just yet. Fix the electrical problem first. Go to Autozone or CSK/O'Reilly and have your electrical system checked out. Battery light and brake light on is a telltale sign of bad alternator. But your belt is probably loose, that may cause the light to go off.
If your car doesn't have enough power, your transmission computer will go haywire and may prompt the CEL.
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Monday, December 22nd, 2008 AT 11:36 PM