JB4 Install Help!!

cmitchel · 02-21-2015, 11:30 AM

So I followed the instructions from Burger Motorsports for how to install the JB4 in to my 08 335i and now my car won't crank. All I get is the interior lights coming on, and reset clock light, no cranking of the engine at all. I did completely remove the ecu first to route the usb cable into my glove box, but didn't disconnect the battery cable and my keys (comfort access) may have still been in range. Please tell me I didn't kill my car as this is my daily driver... Anyone please help me!!!

n54gte · 02-21-2015, 11:42 AM

you installed it wrong or you forgot the jb4 which is the black box

TheYuriPanda · 02-21-2015, 11:46 AM

No pictures no help.

LGCubana · 02-21-2015, 12:00 PM

Quote:

Originally Posted by cmitchel

So I followed the instructions from Burger Motorsports for how to install the JB4 in to my 08 335i and now my car won't crank. All I get is the interior lights coming on, and reset clock light, no cranking of the engine at all. I did completely remove the ecu first to route the usb cable into my glove box, but didn't disconnect the battery cable and my keys (comfort access) may have still been in range. Please tell me I didn't kill my car as this is my daily driver... Anyone please help me!!!

The good thing is the JB is a piggyback and not a re-flash of your DME. So you can always try the installation again.

This time however, maybe not skip step one: keep the FOB far away from the car and wait at least 20 minutes, for the car to go to sleep.

On a more basic level, did you attach the power wire for the JB ?

cmitchel · 02-21-2015, 12:57 PM

I did connect the JB4 box and the power to it as well. I'll try and get some pictures, but I went back and disconnected the battery returned it all back to stock, hooked the battery back up and it is still not cranking. Once I connect the battery back up the interior lights just keep flickering and now I get nothing to the instrument cluster...

rooringhusky · 02-21-2015, 01:32 PM

ALWAYS plug out your battery before messing with any electronics in the car, especially the ECU/DME. It says so pretty clearly in the BMS directions as well.

Hopefully you didn't brick your ECU/DME, I have seen quite a few people who try to install it themselves brick them but it always because they dont follow/read directions.

cmitchel · 02-21-2015, 01:41 PM

I think I am learning that the hard way

I may have been too eager to get it installed. Here is a video of what I am seeing now. No response from the car whatsoever and I can hear a relay in the fuse box clicking. Sorry for the sideways video.

musc · 02-21-2015, 04:51 PM

That video is private. You have a voltmeter to test the battery or if you have a charger, try starting it with the charger connected. I'd also post on the N54tech.com support forum as well.

cmitchel · 02-21-2015, 05:02 PM

Battery reads 11.5V and is less than a year old. Video now public. I can't crank it because nothing responds like the battery is dead, think I fried the ECU.

Mike@N54Tuning.com · 02-21-2015, 05:24 PM

If you want help post install photos.

Mike

Chrisruf911 · 02-21-2015, 05:30 PM

I would try to charge the battery before I jumped to conclusions. I highly doubt you messed anything up.

Clownaround · 02-21-2015, 07:11 PM

Yes make sure you follow the .PDF instructions not just the video instructions. They skip a few important steps in the video...

cmitchel · 02-22-2015, 08:59 AM

Thanks for the input guys. It was just the battery getting drained from the failed starting from initial install. Returned car to stock, charged battery, and cranked up fine. Put all my aftermarket parts back in and installed JB4 with success and not a single error code!! Car runs better than ever

Clownaround · 02-22-2015, 05:37 PM

Phew glad it was just a dead battery....

Seven11 · 02-22-2015, 05:44 PM

glad you got everything worked out!!

Mike@N54Tuning.com · 02-22-2015, 06:23 PM

Glad it was something simple..

Mike

rooringhusky · 02-23-2015, 06:37 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Glad it was something simple..

Mike

+1

02-21-2015, 11:30 AM	#1
cmitchel New Member 2 Rep 18 Posts Drives: 2008 BMW 335i Montego Blue Join Date: Apr 2014 Location: Shreveport, LA, USA iTrader: (0) Garage List 2008 BMW 335i E92 [0.00]	JB4 Install Help!! So I followed the instructions from Burger Motorsports for how to install the JB4 in to my 08 335i and now my car won't crank. All I get is the interior lights coming on, and reset clock light, no cranking of the engine at all. I did completely remove the ecu first to route the usb cable into my glove box, but didn't disconnect the battery cable and my keys (comfort access) may have still been in range. Please tell me I didn't kill my car as this is my daily driver... Anyone please help me!!!
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02-21-2015, 11:46 AM	#3
TheYuriPanda First Lieutenant 74 Rep 390 Posts Drives: 335i XDrive E90 2010 Join Date: Aug 2014 Location: Colorado iTrader: (0)	No pictures no help. __________________ My Build Thread: http://www.e90post.com/forums/showth...8#post16918878
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02-21-2015, 12:57 PM	#5
cmitchel New Member 2 Rep 18 Posts Drives: 2008 BMW 335i Montego Blue Join Date: Apr 2014 Location: Shreveport, LA, USA iTrader: (0) Garage List 2008 BMW 335i E92 [0.00]	I did connect the JB4 box and the power to it as well. I'll try and get some pictures, but I went back and disconnected the battery returned it all back to stock, hooked the battery back up and it is still not cranking. Once I connect the battery back up the interior lights just keep flickering and now I get nothing to the instrument cluster...
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02-21-2015, 01:32 PM	#6
rooringhusky Objects in the mirror are losing 105 Rep 1,133 Posts Drives: 2007 BMW 335i E92 AW/CR 6MT Join Date: Mar 2011 Location: Socal (OC/Riverside) iTrader: (19) Garage List 2007 BMW 335i [10.00]	ALWAYS plug out your battery before messing with any electronics in the car, especially the ECU/DME. It says so pretty clearly in the BMS directions as well. Hopefully you didn't brick your ECU/DME, I have seen quite a few people who try to install it themselves brick them but it always because they dont follow/read directions. __________________ PERFORMANCE: JB4 G5 \ Backend Flash \ DCI \ BMS Downpipes \ CX FMIC \ ER Chargepipe \ Synapse BOV \ KW V2 \ Muffler Delete \ CDV \ ZHP Shifter \ Cyba Scoops FUN: M3 Front \ Mtech Rear \ JL 10W6 \ ModMyNav \ V1 Hardwired \ LUX H8 \ Gloss Black Trim \ Gloss Black Roof \ Cyba Quads \ Cyba Mtech Diffuser
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02-21-2015, 01:41 PM	#7
cmitchel New Member 2 Rep 18 Posts Drives: 2008 BMW 335i Montego Blue Join Date: Apr 2014 Location: Shreveport, LA, USA iTrader: (0) Garage List 2008 BMW 335i E92 [0.00]	I think I am learning that the hard way I may have been too eager to get it installed. Here is a video of what I am seeing now. No response from the car whatsoever and I can hear a relay in the fuse box clicking. Sorry for the sideways video.
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02-21-2015, 04:51 PM	#8
musc ****** 184 Rep 1,702 Posts Drives: Audi TTRS, 335is Join Date: Dec 2006 Location: SC iTrader: (9) Garage List 2011 BMW 335is [10.00]	That video is private. You have a voltmeter to test the battery or if you have a charger, try starting it with the charger connected. I'd also post on the N54tech.com support forum as well.
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02-21-2015, 05:02 PM	#9
cmitchel New Member 2 Rep 18 Posts Drives: 2008 BMW 335i Montego Blue Join Date: Apr 2014 Location: Shreveport, LA, USA iTrader: (0) Garage List 2008 BMW 335i E92 [0.00]	Battery reads 11.5V and is less than a year old. Video now public. I can't crank it because nothing responds like the battery is dead, think I fried the ECU.
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02-21-2015, 05:24 PM	#10
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	If you want help post install photos. Mike
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02-21-2015, 05:30 PM	#11
Chrisruf911 Second Lieutenant 39 Rep 227 Posts Drives: 2007 335i...not stock Join Date: Mar 2012 Location: Mt. Washington, Ky iTrader: (0)	I would try to charge the battery before I jumped to conclusions. I highly doubt you messed anything up.
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02-21-2015, 07:11 PM	#12
Clownaround Private First Class 46 Rep 102 Posts Drives: 2007 335xi Join Date: Feb 2015 Location: CT iTrader: (0)	Yes make sure you follow the .PDF instructions not just the video instructions. They skip a few important steps in the video...
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02-22-2015, 08:59 AM	#13
cmitchel New Member 2 Rep 18 Posts Drives: 2008 BMW 335i Montego Blue Join Date: Apr 2014 Location: Shreveport, LA, USA iTrader: (0) Garage List 2008 BMW 335i E92 [0.00]	Thanks for the input guys. It was just the battery getting drained from the failed starting from initial install. Returned car to stock, charged battery, and cranked up fine. Put all my aftermarket parts back in and installed JB4 with success and not a single error code!! Car runs better than ever
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02-22-2015, 05:37 PM	#14
Clownaround Private First Class 46 Rep 102 Posts Drives: 2007 335xi Join Date: Feb 2015 Location: CT iTrader: (0)	Phew glad it was just a dead battery....
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02-22-2015, 05:44 PM	#15
Seven11 Private 51 Rep 89 Posts Drives: X4m Join Date: Dec 2014 Location: California iTrader: (2)	glad you got everything worked out!!
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02-22-2015, 06:23 PM	#16
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Glad it was something simple.. Mike
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