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  • 2005 - 2014 S-197 Mustang -General/Talk-
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Electrical 2007 Shelby GT parasitic battery drain

  • Thread starter Thread starter ShelbyZ
  • Start date Start date Sep 2, 2024
S

ShelbyZ

Member
Jul 23, 2024
4
5
13
Wisconsin
Sep 2, 2024
#1
  • Sep 2, 2024
  • #1
Have had this problem since I bought the car.
The PO didn't tell me about it.

Finally got around to messing with it.
Pulled every fuse, nothing made a difference.
Went back under the hood, pulled the four fuses going to the SJB (#59, 62, 63, 67).
Drain went away.
When I put either 59 or 67 back in the drain comes back.

Did a search here and found a couple threads, but they ended without a fix.

Thought maybe I need a new SJB but looks like they are discontinued.

Anyone else having this problem.
Do you have a fix.
Are new boxes available, or can they be repaired?

Freind of mine said sell it.
Don't really want to, plus I could not sell it with a known problem.

Thanks
 

89ripper

Founding Member
Jun 3, 2002
926
308
103
Rockford, Illinois
Sep 2, 2024
#2
  • Sep 2, 2024
  • #2
Ive heard about people having problems with leaks around that sjb, have you tried checking anything out to see if there is water damage by it?
 
S

ShelbyZ

Member
Jul 23, 2024
4
5
13
Wisconsin
Sep 3, 2024
#3
  • Sep 3, 2024
  • #3
89ripper said:
Ive heard about people having problems with leaks around that sjb, have you tried checking anything out to see if there is water damage by it?
Click to expand...
Not yet.
That is my next step.
 
Reactions: 89ripper
T

turcotjs

New Member
Aug 1, 2025
3
0
1
93436
Aug 1, 2025
#4
  • Aug 1, 2025
  • #4
ShelbyZ said:
Have had this problem since I bought the car.
The PO didn't tell me about it.

Finally got around to messing with it.
Pulled every fuse, nothing made a difference.
Went back under the hood, pulled the four fuses going to the SJB (#59, 62, 63, 67).
Drain went away.
When I put either 59 or 67 back in the drain comes back.

Did a search here and found a couple threads, but they ended without a fix.

Thought maybe I need a new SJB but looks like they are discontinued.

Anyone else having this problem.
Do you have a fix.
Are new boxes available, or can they be repaired?

Freind of mine said sell it.
Don't really want to, plus I could not sell it with a known problem.

Thanks
Click to expand...
I’m having this problem. I took the SJB out and couldn’t find anything obviously wrong. Everything seems to work, and why install a used box from salvage? I’m going to install a battery disconnect relay for now.
 
T

turcotjs

New Member
Aug 1, 2025
3
0
1
93436
Aug 1, 2025
#5
  • Aug 1, 2025
  • #5
I’m having this problem. I took the SJB out and couldn’t find anything obviously wrong. Everything seems to work, and why install a used box from salvage? I’m going to install a battery disconnect relay for now.
 
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