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03-10-2015, 08:46 AM | #24 |
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What are you talking about? I don't understand. Why would you be overcharging?
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03-10-2015, 09:15 AM | #25 |
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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?
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03-10-2015, 09:23 AM | #26 | |
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Quote:
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03-10-2015, 10:06 AM | #27 | |
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03-11-2015, 01:55 AM | #28 | ||
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Quote:
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03-13-2015, 08:28 AM | #29 |
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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
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03-13-2015, 08:40 AM | #30 |
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From what I've read, you shouldn't have to disconnect the battery to use the CTEK charger.
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03-13-2015, 09:53 AM | #31 |
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03-13-2015, 10:38 AM | #32 |
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I've always done it, takes a minute
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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 |
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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)
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05-16-2023, 04:36 PM | #35 |
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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 |
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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.
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05-27-2023, 12:25 AM | #37 |
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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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