[CarsenJay306]

I need some help from someone with JB4 experience. I put the JB4 on my car (2007 335i) in January and I needed to remove it to take my car the the dealer, well now my car wont start and I'm getting a series of lights. I've asked around for help but I've come to realize i need someone who is better at this kind of stuff than i am. And of course i'll pay you for your time.
I just wanna get my car back on the road! Please help, thanks!

[Taran.J]

Unplug your battery, and double check that the power pin is in the correct orientation. If the OEM power pin is inserted wrong into the JB4 harness has an effect of the car starting.

Assuming you put it all back in once you got the car home from the dealership.

http://burgertuning.com/instructions/JB4PnP.pdf

Some instructions if needed

[AW335OME]

Can't be of much help at all since I'm across the country but couldn't help but notice you live in Lake Stevens! I used to love snowboarding out there when i lived out there in the northwest.

[CarsenJay306]

the car is still in my garage, jb4 is no longer on the car, i got the ecu connected back to stock. I had the jb4 on the car for a few months no problem but now that I've taken it off i cant get my car to start up again.

[CarsenJay306]

Originally Posted by AW335OME

Can't be of much help at all since I'm across the country but couldn't help but notice you live in Lake Stevens! I used to love snowboarding out there when i lived out there in the northwest.

Hell yeah man! Snowboarding at Stevens Pass and Mt. Baker is the best. It was a good year!

[bimmerdavid]

Originally Posted by CarsenJay306

the car is still in my garage, jb4 is no longer on the car, i got the ecu connected back to stock. I had the jb4 on the car for a few months no problem but now that I've taken it off i cant get my car to start up again.

Double check that you put the connectors back correctly into the ECU.

I had the same issue and it was because I had the connectors in wrong.

Also, double check the power is correct again.

[CarsenJay306]

Originally Posted by bimmerdavid335

Double check that you put the connectors back correctly into the ECU.

I had the same issue and it was because I had the connectors in wrong.

Also, double check the power is correct again.

Yeah I did that when I last put them in. I actually tried to put them in backward then what i thought and they wouldn't even fit right, so there was really only one way. Arrows going in. Power wire is good.

[bimmerdavid]

Originally Posted by CarsenJay306

Yeah I did that when I last put them in. I actually tried to put them in backward then what i thought and they wouldn't even fit right, so there was really only one way. Arrows going in. Power wire is good.

And the large and small slide connectors are sitting correctly? This all feels like there is a connection wrong or missing.

Can you post a pic?

[CarsenJay306]

Originally Posted by bimmerdavid335

And the large and small slide connectors are sitting correctly? This all feels like there is a connection wrong or missing.

Can you post a pic?

i know they are facing the right way, and im positive they are in the right slot. here are some pics of how its sitting, some may be a little blurred.

[CarsenJay306]

top and bottom pics are upside down..

[bimmerdavid]

It almost looks like the large connector is not fully seated? Hard to tell from these pics.