2005 Mustang power problem - Ford Mustang Forum
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post #1 of 7 (permalink) Old 03-12-2010 Thread Starter
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Question 2005 Mustang power problem

Hi! I am new at this. I have a question about my 2005 Mustang. While driving in the rain the other morning all the electronics went out on my car. But that afternoon everything was working. What can cause that?

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post #2 of 7 (permalink) Old 03-12-2010
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Welcome to AFM!
Check the SJB (smart junction box) area located behind a removable panel on the passenger side foot well for dampness.
The sjb controls many of the electronics.

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post #3 of 7 (permalink) Old 03-12-2010
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I would check to see if your car is suffering from the dreaded TSB water leak. Check the carpeting in the front seats to see if its damp. Lift it up and check to see if the padding underneath is damp. Also on the passenger side open up the little door on the kick panel down where the passengers feet are and see if the SJB ( Smart Junction Box is wet ). If there is anything wet post back and Ill go over on how to fix the water leak.

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post #4 of 7 (permalink) Old 03-13-2010
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Almost 100% sure it's water-related as the others stated.

1965 Mustang Coupe
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post #5 of 7 (permalink) Old 03-13-2010
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Welcome and I agree that's the place to look.

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post #6 of 7 (permalink) Old 03-13-2010
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If in fact you find a water leak as other members have suggested, look at this technical service bulletin (found in the TSB list). It is very helpful in diagnosing water leaks. Pressurizing cabin as they tell you how to do was very helpful to me.

TSB 07-14-6 "Water Leak-Front Floor Area"

It is very important to take the time to find out exactly where water may be entering the car's interior. Just guessing is a waste of more time.

My water leak was from side window weatherstrip retainer. Read my thread about how I resolved my problem if yours, through diagnosis is the same. Other water leaks can be from having windshield replaced (poorly done), or leaks through the firewall area due to missing rubber plugs or missing factory sealing in weld areas of firewall metal pieces.

Last edited by s197gt; 03-13-2010 at 03:21 PM. Reason: add more information
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post #7 of 7 (permalink) Old 03-15-2010 Thread Starter
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Thank you for the info. it was a water leak i got it fixed
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