Disconnecting 12V Battery on iForceMAX = Fault Codes

[Benny]

Well this didn’t go well. Following recommendations of disconnecting the 12V battery before wiring lights, and after reconnecting everything the dash threw a fit. Towed to the stealership for a system reboot.

What’s your estimated bill on this?

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[TacoFreak]

Wow! I'm glad I never disconnect the negative terminal when I trickle charge my truck like Toyota recommends.

 

[GSPHerder]

Did you have to pay for tow and reset?

I wonder if putting trickle charge on the jump posts on top of the engine will keep juice in the system when you swap out a dead battery?

 

[lauren01]

I got those codes after disconnecting only the neg terminal to do a lighting upgrade. I waited for 45 minutes. After eating lunch and having a patience-increasing beer, everything went back to normal. I used my XTool to look at codes, erase, run a diagnostic, and whew! No more codes.

Shrug. Being an early adopter of these newfangled little beasts of trucks can be painful. Overall I love the truck, yet am always awaiting its next surprise.

 

[Bravada]

This sucks Benny.
I've disconnected my 12v battery a dozen times now, with no ill effect. I wonder why I've gotten away with disconnecting it, and the universe punishes you. I wonder if there is a specific order to it. I've always disconnected the negative terminal first. How long was it disconnected? I wonder if has anything to do with Hybrid versus non.

 

[tinkerer]

I literally had this happen today after installing the Lexland Grill and lights. I have the xmas tree lights on the dash now with no luck after disconnecting the negative battery terminal. I guess I'll see what the dealer says tomorrow.

 

[Benny]

Did you have to pay for tow and reset?

I wonder if putting trickle charge on the jump posts on top of the engine will keep juice in the system when you swap out a dead battery?

ToyotaCare covered the tow (unlimited miles), Diagnostic, new 12V battery = waiting for the bill and for the truck….

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