redracer
Well-Known Member
- First Name
- Robert
- Joined
- Aug 22, 2017
- Threads
- 20
- Messages
- 558
- Reaction score
- 619
- Location
- Manteca, CA
- Vehicle(s)
- 2023 4xe Rubicon
Walk to your passenger front tire. Lie on the ground behind the tire.So, if I have a dead aux battery and can’t start my Jeep, how do I bypass the six battery so o can get home? Pretend I’m at the mall after a movie
Reach up behind the rear facing fender plastic and push it forward so that you can look into this cavity.
Find a 2"x2"x4" box with two battery cables coming from it and one small 2 wire connector.
Unplug the connector.
Now, jump start your jeep and drive home.
The reason that you can't start a JL with a dead aux battery is that when starting, that battery is what drives all the electronics required to start. This is controlled by the ESS Relay (the black box). By simply disconnecting the coil driver for that relay, the aux battery is never disconnected from your main battery, and the electronics stay powered by your jumping vehicle.
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