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My Lexus sc300 having problems when I depress on.

Tiny
ANONYMOUS
  • MEMBER
  • 1994 LEXUS SC 300
  • 145,000 MILES
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.
Thursday, November 1st, 2012 AT 3:00 AM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
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.
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Thursday, November 1st, 2012 AT 12:24 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Ensure wires are not dangling near brake pedal and being affected by the pedal during braking.
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Thursday, November 1st, 2012 AT 12:24 PM

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