Help car wont start! 07 335i

este · 01-13-2016, 05:40 PM

When I first went to start my today i noticed that it cranked a little longer then usual before it turned over. Now later when i went to turn it wont start. When i press the start button everything seems to reset and the dash goes blank and come back with no crank. All accessories and lights are fine. I checked what i believe is the ground strap cable and it seems fine but its covered in black tape so i couldnt be 100% sure. Im not sure if this is actually the ground strap cable though, anyone with a specific pic of its location in the engine bay? I have the jb4 installed so I thought maybe its a loose power cable in the ecu but i was able to read a 2DEC code(Power management, battery control) with my laptop does this mean the power cable isnt loose since I can still connect it to my laptop? Maybe starter but wouldnt that give me the starter code when i scanned it? I guess its also possible its the battery i havent tried to jump it yet. Any Input would be appreciated:bow https://www.youtube.com/watch?v=

Donutz · 01-13-2016, 06:05 PM

That to me looks like a weak battery. I've never experienced this on my bmw, but I've had similar experiences on other cars with weak batteries. Lights work, radio works, but the dash goes crazy and the car doesn't crank.

VTECaddict · 01-14-2016, 02:08 AM

Your video shows telltale signs of a dead battery. If you are still on the factory battery, it's for sure done for by now and you are due for a new one.

You can try to charge it or jump start the car, but that battery is likely on it's last legs.

jon@themshop · 01-14-2016, 10:32 AM

Yup, sounds like a dead battery.

Make sure when you get a replacement, you get the same version you have (AGM or non AGM) and don't forget to register the new battery.

Jon C.

mojobmw_e90 · 01-14-2016, 10:39 AM

Battery has enough juice to power on accessories and such but not enough to turn the starter over.

Battery replacement!

hankcah · 03-03-2016, 12:11 PM

Wondering what kind of battery you went with. How did you have to "register" this battery? Total prices?

Cory S · 03-04-2016, 04:36 AM

Quote:

Originally Posted by este

it cranked a little longer then usual before it turned over.

Cranked and turning over is the same thing......

Started/fired up means it ran...

Cranking/turning over is the crankshaft rotating during starting.

01-13-2016, 05:40 PM	#1
este N54 to N55 66 Rep 308 Posts Drives: e92 335i (sold) / M235i 6mt Join Date: Jul 2013 Location: Austin iTrader: (0)	Help car wont start! 07 335i When I first went to start my today i noticed that it cranked a little longer then usual before it turned over. Now later when i went to turn it wont start. When i press the start button everything seems to reset and the dash goes blank and come back with no crank. All accessories and lights are fine. I checked what i believe is the ground strap cable and it seems fine but its covered in black tape so i couldnt be 100% sure. Im not sure if this is actually the ground strap cable though, anyone with a specific pic of its location in the engine bay? I have the jb4 installed so I thought maybe its a loose power cable in the ecu but i was able to read a 2DEC code(Power management, battery control) with my laptop does this mean the power cable isnt loose since I can still connect it to my laptop? Maybe starter but wouldnt that give me the starter code when i scanned it? I guess its also possible its the battery i havent tried to jump it yet. Any Input would be appreciated:bow https://www.youtube.com/watch?v=
	Appreciate 0 Tweet Quote

01-13-2016, 06:05 PM	#2
Donutz Lieutenant 140 Rep 476 Posts Drives: 335i Join Date: Sep 2015 Location: Toronto, eh iTrader: (2)	That to me looks like a weak battery. I've never experienced this on my bmw, but I've had similar experiences on other cars with weak batteries. Lights work, radio works, but the dash goes crazy and the car doesn't crank.
	Appreciate 0 Quote

01-14-2016, 02:08 AM	#3
VTECaddict Where'd my VTEC go? 481 Rep 6,067 Posts Drives: 06 330i 6MT Join Date: Mar 2009 Location: Seattle, WA iTrader: (4)	Your video shows telltale signs of a dead battery. If you are still on the factory battery, it's for sure done for by now and you are due for a new one. You can try to charge it or jump start the car, but that battery is likely on it's last legs. __________________ AW/Terra \| ZSP \| ZPP \| ZCW \| iDrive \| CA Mods: BC BR coilovers \| Blacklines \| M-tech rear \| dual exhaust \| M3 steering wheel \| BMW SSK \| ZHP shift knob \| High-kick CF spoiler \| NBT Retrofit M3 front control arms \| M3 rear guide rods \| Manzo rear toe and camber links \| Monroe rear shock mounts \| Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear
	Appreciate 0 Quote

01-14-2016, 10:32 AM	#4
jon@themshop Captain 38 Rep 762 Posts Drives: BMW Join Date: Apr 2007 Location: Los Angeles/Eagle Rock, CA iTrader: (8)	Yup, sounds like a dead battery. Make sure when you get a replacement, you get the same version you have (AGM or non AGM) and don't forget to register the new battery. Jon C.
	Appreciate 0 Quote

01-14-2016, 10:39 AM	#5
mojobmw_e90 Major 380 Rep 1,497 Posts Drives: 2014 E63S Join Date: Oct 2014 Location: Chicago IL iTrader: (3)	Battery has enough juice to power on accessories and such but not enough to turn the starter over. Battery replacement!
	Appreciate 0 Quote

03-03-2016, 12:11 PM	#6
hankcah First Lieutenant 43 Rep 364 Posts Drives: BMW 335i E90 Join Date: Jun 2010 Location: Saint Louis iTrader: (0) Garage List 2007 335i [0.00]	Wondering what kind of battery you went with. How did you have to "register" this battery? Total prices?
	Appreciate 0 Quote