09 135i won't start after 5 years issue free...

MightyMouseTech · 03-10-2015, 07:47 AM

Quote:

Originally Posted by blinded

I'm not disputing the need for coding a new battery, but if true it's a shockingly poor design decision from bmw. If I'm in the middle of nowhere with a dead battery, bmw has given me no way to replace it without fear of it blowing up?

That is why batteries should be replaced BEFORE they die. That whole preventative maintenance thing.

edisapimp · 03-10-2015, 08:46 AM

Quote:

Originally Posted by Adam135

And overcharging is OK? I'll stick with doing things the right way....

What are you talking about? I don't understand. Why would you be overcharging?

blinded · 03-10-2015, 09:15 AM

Quote:

Originally Posted by MightyMouseTech

That is why batteries should be replaced BEFORE they die. That whole preventative maintenance thing.

Not sure how that's the answer. If I don't live near a dealer and I'm replacing a battery that's not dead as part of "that whole preventative maintenance thing" will bmw give me a way to tell the car that it has a new battery?

MightyMouseTech · 03-10-2015, 09:23 AM

Quote:

Originally Posted by blinded

Not sure how that's the answer. If I don't live near a dealer and I'm replacing a battery that's not dead as part of "that whole preventative maintenance thing" will bmw give me a way to tell the car that it has a new battery?

https://www.autoenginuity.com/order-...eset-tool.html

blinded · 03-10-2015, 10:06 AM

Quote:

Originally Posted by MightyMouseTech

https://www.autoenginuity.com/order-...eset-tool.html

I am aware there are ways to register a battery without going to the dealer. But, even that tool you linked has functions that can be performed directly on the car through the bc. That bmw chose not to include the function that, if not performed, could blow up a battery, seems nuts to me.

Adam135 · 03-11-2015, 01:55 AM

Quote:

Originally Posted by edisapimp

Not really. The only issue with the battery coding is that the battery would be OVERcharged while driving due to the ECM thinking the battery is old and not new.

Quote:

Originally Posted by Adam135

And overcharging is OK? I'll stick with doing things the right way....

Quote:

Originally Posted by edisapimp

What are you talking about? I don't understand. Why would you be overcharging?

imported_mega · 03-13-2015, 08:28 AM

overcharged? You mean undercharged, it stops trying to top off old batteries.

I fix this by unhooking the battery and using a ctek charger on it once a month, I'm still on my original 2008 battery

bmw1racer · 03-13-2015, 08:40 AM

Quote:

Originally Posted by imported_mega

I fix this by unhooking the battery and using a ctek charger on it once a month, I'm still on my original 2008 battery

From what I've read, you shouldn't have to disconnect the battery to use the CTEK charger.

mr.fabulous · 03-13-2015, 09:53 AM

Quote:

Originally Posted by bmw1racer

From what I've read, you shouldn't have to disconnect the battery to use the CTEK charger.

I was going to make the same comment... why disconnect the battery from the car?

imported_mega · 03-13-2015, 10:38 AM

I've always done it, takes a minute

D.I.P. · 04-23-2015, 11:18 AM

Just realized in linking this thread to a new thread that i never responded... To be honest i believe the issue was related to my aftermarket Audio install. I was running a Pioneer Head Unit with a JL Audio amp and i believe a parasitic draw was causing this issue. At the end of the day i ended up returning the new battery and recharging the original BMW battery dropping it in the car returning the audio system to OEM and all has been well since... Now i am trying to figure out where i went wrong with the radio/amp install so i can put it all back in and not run into the same issue.

and yes going on almost 119K miles now with no issues *knocks on wood* (besides the ones i caused LOL)

n2djazz · 06-20-2015, 11:21 PM

glad to hear you found your issue.

cyford · 05-16-2023, 04:36 PM

but the batery is not dead, maybee there is a short somewhere, i have a huge 1500 watt amplifier which i been using for about a year. it still works while the car will not start,. wont start with a power boaster too. will reset the errors and disconnect the batt and test again later

sburkeatqmi · 05-26-2023, 09:53 PM

My 2008 135i wouldn't start tonight after my daughter took my wife to the Dr. She said all of the dash lights came on while she was driving there & that the windshield wipers would come on on their own. I had replaced the battery about 3 months ago & I had noticed the ground cable was starting to corrode awhile back so I assumed is was just a bad connection. When I got there I cleaned up the cable & post & still nothing. It had lights & power but it wouldn't even try to start. Again the wipers came on randomly as I was trying to start it. Same with the lights on the dash.

I'm not sure if it's related but one of my halo lights has been out. From what I understand it's the FRM & not a bulb? I have the upgraded light package. I'm thinking a bad alternator but I'm not sure with these cars. I have 112k miles on it.

GoRomeo · 05-27-2023, 12:25 AM

Check your ground straps. There is one inside the engine bay and others underneath the car I believe. These could loose and or corroded.

03-13-2015, 08:28 AM	#29
imported_mega Colonel 122 Rep 2,199 Posts Drives: various bmw's Join Date: Jul 2007 Location: neverland iTrader: (0)	overcharged? You mean undercharged, it stops trying to top off old batteries. I fix this by unhooking the battery and using a ctek charger on it once a month, I'm still on my original 2008 battery __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. Driving e82, e72, e85, R53 Gone but not forgotten.. 1974 2002, many various 3s.
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03-13-2015, 10:38 AM	#32
imported_mega Colonel 122 Rep 2,199 Posts Drives: various bmw's Join Date: Jul 2007 Location: neverland iTrader: (0)	I've always done it, takes a minute __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. Driving e82, e72, e85, R53 Gone but not forgotten.. 1974 2002, many various 3s.
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04-23-2015, 11:18 AM	#33
D.I.P. Private First Class 25 Rep 133 Posts Drives: 11' 335i xDrive Join Date: May 2009 Location: NJ iTrader: (0)	Just realized in linking this thread to a new thread that i never responded... To be honest i believe the issue was related to my aftermarket Audio install. I was running a Pioneer Head Unit with a JL Audio amp and i believe a parasitic draw was causing this issue. At the end of the day i ended up returning the new battery and recharging the original BMW battery dropping it in the car returning the audio system to OEM and all has been well since... Now i am trying to figure out where i went wrong with the radio/amp install so i can put it all back in and not run into the same issue. and yes going on almost 119K miles now with no issues knocks on wood (besides the ones i caused LOL) __________________ 08 135i Coupe 6sp ///M Sport - on jackstands 11 335i X-Drive Sedan 6AT ///M Sport - SOLD - PPK - xHP Flash - MHD Stage 2+ - VRSF 3.5" DP - VRSF CP - VRSF 5" FMIC - AA GREEN FILTER 09 135i Coupe 6sp ///M Sport - SOLD - SSK - RL DP's - JB4 - BMS DCI
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06-20-2015, 11:21 PM	#34
n2djazz Private First Class 6 Rep 113 Posts Drives: 2009 135i Coupe (T. Silver) Join Date: Oct 2009 Location: Georgia iTrader: (0)	glad to hear you found your issue.
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05-16-2023, 04:36 PM	#35
cyford Registered 0 Rep 2 Posts Drives: bmw 135i Join Date: Jul 2022 Location: atlanta ga usa iTrader: (0)	I have the same issue but the batery is not dead, maybee there is a short somewhere, i have a huge 1500 watt amplifier which i been using for about a year. it still works while the car will not start,. wont start with a power boaster too. will reset the errors and disconnect the batt and test again later
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05-26-2023, 09:53 PM	#36
sburkeatqmi New Member 9 Rep 13 Posts Drives: 2008 BMW 135i Convertible Join Date: Oct 2020 Location: Chandler, Az iTrader: (0) Garage List 2008 BMW E88 135i [0.00]	My 2008 135i wouldn't start tonight after my daughter took my wife to the Dr. She said all of the dash lights came on while she was driving there & that the windshield wipers would come on on their own. I had replaced the battery about 3 months ago & I had noticed the ground cable was starting to corrode awhile back so I assumed is was just a bad connection. When I got there I cleaned up the cable & post & still nothing. It had lights & power but it wouldn't even try to start. Again the wipers came on randomly as I was trying to start it. Same with the lights on the dash. I'm not sure if it's related but one of my halo lights has been out. From what I understand it's the FRM & not a bulb? I have the upgraded light package. I'm thinking a bad alternator but I'm not sure with these cars. I have 112k miles on it. __________________ 2008 Black Sapphire Metallic/Boston Beige 135i Convertible
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05-27-2023, 12:25 AM	#37
GoRomeo Brigadier General 956 Rep 3,837 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [9.50] 2006 330i [6.75]	Check your ground straps. There is one inside the engine bay and others underneath the car I believe. These could loose and or corroded.
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