OBD connector plug shorts Dash????

[Gabe]

Using RaceCapture. Was working fine a couple of weeks ago.

(Left the car on the garage 2 weeks - battery tender connected)

Dash goes dark as soon as I connect the OBD and throws a drive train error.

very weird. Nothing has changed on the car. Maybe the battery is dying?

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[Timmy_Jones]

What does it do in aux or diagnostic mode?? On and off the trickle charger?

 

[Gabe]

When it went off and the engine was not running I had to wait a little with the tender on and power came back.

so I was unable to get any codes at that point.

when the car started it just showed my restraint codes from the bucket seats.

so nothing unusual.

I’m convinced the car didn’t like to be sitting for two weeks and the battery drained. I’m going to drive the car today.

the battery does not charge beyond 70-90% on the tender. Even tho the car is 1 year old and 3500 miles.
Not sure if there is permanent damage to the battery.

 

[Vertex]

When it went off and the engine was not running I had to wait a little with the tender on and power came back.

so I was unable to get any codes at that point.

when the car started it just showed my restraint codes from the bucket seats.

so nothing unusual.

I’m convinced the car didn’t like to be sitting for two weeks and the battery drained. I’m going to drive the car today.

the battery does not charge beyond 70-90% on the tender. Even tho the car is 1 year old and 3500 miles.
Not sure if there is permanent damage to the battery.

I'd bring it in to get the battery checked then. I'd also highly recommend if you're doing any type of flashes to any modules with bimmercode etc to ALWAYS make sure you've got a tender or charger hooked up. If it drops power in the middle of a flash you could end up bricking a module.

edit: I'd also make sure you've got any extra lights like the headlights/exteriors off to help reduce drain if the tender or charger you haven't is a light duty one

 

[Gabe]

Thanks. Yes my tender is light duty. I think also need to lock the car because if is unlocked the computers do not rest or something like that

 

[Gabe]

My battery died. At least that’s what the tester shows. I killed the battery messing with the car or leaving stuff connected that drained it.

I’ve been getting low state of charge messages just before this happened.

took the car for battery testing and this is what it shows.

again. As long as I dont have connected a specific after market accessory, all is good. Once I connect the accessory and it draws power the battery dies.

which brings me to May next question for @razorlab who had a similar set up:

does the RaceCapture NEED to be hardwired to Fusebox?

mine is drawing power from OBD2. Not connected to Fusebox.

I may have left it connected to OBD2 a couple of times while the car was parked.

Is that what killed my battery?

 

[razorlab]

which brings me to May next question for @razorlab who had a similar set up:

does the RaceCapture NEED to be hardwired to Fusebox?

mine is drawing power from OBD2. Not connected to Fusebox.

I may have left it connected to OBD2 a couple of times while the car was parked.

Is that what killed my battery?

Yea that could do it. OBD2 port isn't switched power so basically the Racecapture is just staying on.

Surprised your alarm didn't go off though.

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