1994 Lexus Sc 300 Sc300 Having Problems Depress On Breaks Electrical System

1994 LEXUS SC 300
145,000 MILES
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My Lexus sc300 having problems when I depress on the breaks all my electrical system shuts down and come back on. This problem only accrues when I depress on breaks. Please tell me what is causing this shut down to system.
Nov 1, 2012 at 3:00 AM
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KHLOW2008
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It could be a bad ground somewhere causing the problem. If problem occurs only on hard braking, something could be loose and the braking is causing wires to sway and loose contact or a bare wire is being intermittently shorted due to the movement.

Not an easy job to find the source so I would suggest checking the battery terminals etc for clean and tight connections for a start.
Nov 1, 2012 at 12:24 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Ensure wires are not dangling near brake pedal and being affected by the pedal during braking.
Nov 1, 2012 at 12:24 PM
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