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04-28-2019, 10:55 AM | #23 |
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Hey all!
I've been through the battery replacement thing recently and have found this tool extremely useful, not just to register batteries but also to read code and fix your ride. The link is posted below, very affordable and opens up the dialog between you and your finely tuned machine. You can replace the battery with whatever type you wish, just make sure all the connections are there from your factory to new and everything fits right, from there just register it properly in the vehicle and you should be good to go. Scan Tool Automotive Scanner for... https://www.amazon.com/dp/B07CZB2MWL...p_mob_ap_share |
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06-06-2019, 10:30 AM | #24 | |
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06-10-2019, 01:45 PM | #25 |
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I looked at the user manual from the Amazon product listing and it says you can change battery size and type (flooded versus AGM). That seems like a pretty good option for a one time ~$100 expense.
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128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport
Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09 |
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07-20-2019, 05:55 PM | #26 |
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Maan, I know there's been time since this topic exists, but you saved me lots of time. That's the best description of battery replacement procedure on E series in the whole Internet.
I used this guide to replace battery on E84, and it helped me waaay. Here are couple of cents to add for E84. Tools and help you would need. 1. A 1/4" ratchet. 2. 10 mm and 13 mm heads (the 13 mm one is only needed to remove the but that holds the bolt for red battery control module (whatever it is, next to the positive terminal; all other nuts are 10 mm ones). 3. A 250+ mm extender for the ratchet (this one is needed to unscrew the bolt that holds the metal plate near the negative terminal and fixes the battery down to the car body). 4. If you're doing it for the first time, it would be great if there were someone who could assist you with a torch. Comments 1. To remove the metalic clips of the red battery control module, you have to insert the flat screw driver down along the metallic clip and pull the screw driver aside from the battery side towards the walls of car body. The S-shaped metallic clip holds the power control module to the walls of the battery. (Gee, with my English it hardly could help anyone, but who knows) Releasing the clips turned out to be the hardest part of the work. 2. When you will be screwing the bolt that pins the metallic plate to the body, make sure to put it down on the car trunk's floor before inserting the new battery. The 10 mm socket that I used to unscrew the plate's bolt wasn't magnetic. I couldn't position the plate properly failing to fit the bolt into the hole in the trunk's floor. The plate has three notches that should clip into the battery and a bolt that you should screw into the car's floor when there three notches are positioned properly. 3. If you are using an Exide AGM battery, it could be that the vent hole in the battery that is next to the positive terminal will be capped. Mine has a rubber cap inserted into the vent hole of the battery. Only the vent hole that is close to the negative terminal was open. Unlatch the cap with your nail to open the vent whole on the side of the positive terminal and then cap the hole next to the negative terminal. All in all, this is a ridiculously awkward procedure, dear BMW. It's not a big deal when you do it for the second time, but you'd expect a much more easier way to replace such a part as the battery from a manufacturer that produces premium products. Imagine you're 1000 miles away from the BMW service shop, and your battery died. Why would you go through such a mess with gazillion of wires when it should be a pull out / push in procedure? Thanks a lot to the members of this forum and Mark08EX, this is because of you I could manage with replacement much easier than I expected. Hopping BMW will publish this procedure somewhere on their papers. |
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10-07-2019, 12:08 PM | #27 |
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I need to replace my battery this week. Looking into what battery to purchase, but I have Carly for Registration, so that's no worry.
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"Hrothgar": 2012 135i: 6MT M-Sport, BSM/Blk; Nav, Premium, Convenience, HK Dinan Stage 2 +PPK /// BMW PE /// VRSF CP /// K&N /// Koni Sports /// RSFB Inserts /// MPS4S 225/255 /// Other Stuff |
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10-07-2019, 12:52 PM | #28 |
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The WalMart H8 is their biggest and least expensive of the three sizes that work in our cars. I think it's less expensive b/c it's such an unusual size (big!) thus less in demand.
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E82 - BMWP Springs / Koni Yellows / M front control arms / Adjustable front endlinks / M rear guide rods / Whiteline Poly RSFB
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10-08-2019, 07:58 PM | #29 |
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I'm trying to figure out which size to get. My original is not marked with a size and my searches on Autozone are coming up with options in H6, 7, and 8.
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"Hrothgar": 2012 135i: 6MT M-Sport, BSM/Blk; Nav, Premium, Convenience, HK Dinan Stage 2 +PPK /// BMW PE /// VRSF CP /// K&N /// Koni Sports /// RSFB Inserts /// MPS4S 225/255 /// Other Stuff |
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10-08-2019, 08:59 PM | #30 |
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All 3 fit because of the adjustable bracket. I went with the H8 (~80Ah) as it was the largest - my car has most available options.
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E82 - BMWP Springs / Koni Yellows / M front control arms / Adjustable front endlinks / M rear guide rods / Whiteline Poly RSFB
F22 - Stock M Sport, 6MT |
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09-22-2020, 01:31 PM | #31 |
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Drives: 1964 700 Sport Cabriolet
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Just replaced the original battery (Week 33 of 2012) in my 2013 128i with a new BMW battery. New one was larger and used the longest-size trunk mounting hole. Made for a bit of effort to get the plate back in the floor. Used Schwaben/Foxwell scan tool to register. Asked me a bunch of questions on markings on battery I never found. Probably should have taken a photo of the new batter prior to installation. Just told the scanner it was the same size (Ah) battery and used the date code on a sticker when it asked me for some number at/near the negative terminal. The old one had a date stamp in the terminal so I figured that's what it wanted. 4-digit number, no spaces. Seemed to work.
I'd been having some issues of "low voltage" warning after the car sat for a couple of days with the iPod still connected (if that made any difference) and with the dash information display so cramped anyway, I wanted to get rid of the warning triangle. It never failed to start. Pretty impressive life for a Varta battery! If I put it on my C-Tech charger with the "reconditioning" cycle, it would be fine for over a week if I didn't leave lots of things active, or the doors open, or the radio on without the engine running. The first clue I was going to get the "low voltage" warning would be loss of comfort-access to open the locked doors. I'd have to use the key button, at least once, to reactivate CA. I assume this is some protection that shuts off non-vital electrical consumers so the car will always at least start. Schwaben battery history test showed last battery at 55% and new one, not charged since manufactured, registered 75%. On the instructions here for the clips on the side of the red-plastic positive terminal mass, if you just reach under where it clips, and simply pull out with your fingers, it released on mine quite simply. I started with the screwdriver but it made no sense. |
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06-01-2021, 08:07 PM | #32 |
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So I had a completely dead battery and I was able to pop the hood really easy. Just take the divers side kidney grill off. It’s not really needed but makes it way easier. Just to the left of the hood pin you will see a C shaped groove on the latch itself. Push that to the left about 1/4” with a Phillips screwdriver and it will pop open the hood. Once I figured out how to actually do it. It takes a few secs to do. I might make a YouTube tutorial if someone needs a visual.
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07-28-2021, 10:59 AM | #33 |
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I had to replace my battery again recently and i had to go through my own DIY to remember what to do LOL.
bmw1racer, The autoenginuity tool I used to register the battery before was borrowed from a friend. Unfortunately, he moved to a different state so i couldn't borrow it anymore. I just purchased Carly for BMW and it allowed me to register the battery to the car. It was easy to use too.
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2011 135i 6MT | Alpine White | Terracotta Boston Leather | M-Sport | BMW Performance Exhaust Resonator Delete | Active Autowerke Signature Exhaust | BMW Performance Suspension | Blackline LCI Taillights | BMW Performance CF Spoiler | CF Rear Diffuser | PPK | E92 M3 FSB | Matte Black Kidney Grilles | VMR V710 Jet Anthracite | Michelin PSS | BMW SS Pedals
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09-04-2021, 10:09 PM | #34 | |
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2011 135i Alpine White DCT N55 All Stock Built on 10/10 Proud owner since 12/12. |
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06-08-2022, 09:05 PM | #36 |
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Good writeup. The 128 is definitely a battery hog especially as my wife only drives short trips around town with AC and stereo cranked. I just upgraded my 2012 128 battery from the stock H6 70 AH to an H8 AGM 95 AH. It does fit using the last screw socket in the battery compartment but it is very hard to get the screw in - no room for hands. I had to use a pickup tool to get it started. Used a Carly to “code” the change to agm(used 95AH selection) and to register. For those intimidated by “coding” , its a simple menu driven selection - no typing or compiling required. The only slight issue was the battery module did not show up until I started the car. If you use a Wifi Carly adapter, you also have to disconnect from any other wifi network and select the Carly adapter to connect to the car. Should have been obvious but took me a few minutes to realize 🙄.
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07-14-2022, 06:38 PM | #37 |
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Battery died today after seven years despite being connected to a CTEK battery charger/maintainer on a daily basis.... Now I get to try out the DIY first hand.
Wish me luck. Update: Had some anxiety about changing the battery because of the IBS crap mounted on the battery, but the DIY was great. Replaced the BMW stock battery with an AutoZone Duralast Gold battery. Probably will need to register the battery, seeing that its specs were higher than the original. This is the second battery in ten years. I only had to replace the battery in my E36 once in the 18 years I owned it. Once again, new/high tech is not necessarily good tech.
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Last edited by bmw1racer; 07-14-2022 at 09:01 PM.. |
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