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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 12-17-2010, 03:25 PM
digdoug88 digdoug88 is offline
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Location: Camarillo, Ca
 
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Mein Auto: 2004 745i
2004 745i battery replacement problem

Hi,

I just replaced the battery in my 2004 745i, and there is absolutely no power. I've tested the battery, and it is fully charged. I have also double checked all of the terminal connections and found them to be tight and intact.

The replacement was without incident, and the battery fits perfectly, with no modifications necessary.

Does anyone have any thoughts? Other than the obvious one about the dealer.

Thanks
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  #2  
Old 12-17-2010, 04:01 PM
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Lastcombo Lastcombo is offline
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Mein Auto: BMW745I E65 ,BMW318 IS 94
did you register the new battery? you have to register the battery when you replace it with a new one ,also welcome on the forum post pics of your car
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Last edited by Lastcombo; 12-17-2010 at 04:04 PM.
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  #3  
Old 12-17-2010, 04:15 PM
digdoug88 digdoug88 is offline
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Location: Camarillo, Ca
 
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Really? The battery has to be registered? Would that keep it from powering the car?
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  #4  
Old 12-17-2010, 04:46 PM
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7Figurez 7Figurez is offline
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Yes, the battery needs to be registered to keep it charging correctly, that being said your car should power on without the new battery being registered. You should take a volt meter and test the battery to make sure it is charged up and not dead. The only other thing that I could think of is that the cables are put on backwards or they are corrided to the point of losing connection to the battery. Once you figure out why you are not getting power you will want to get the battery registered, this requires a DIAG. computer to reset the adapt values in the car.
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  #5  
Old 12-17-2010, 05:27 PM
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Rick in Yuma Rick in Yuma is online now
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Mein Auto: 05' 760li,94' H1,08'Smart
There is a fuse/disconnect in trunk above the battery. Look for it. Check your owners book... I can't tell you more because mine is in the shop. 200 miles from me and the POS 3 loaner is not the same..
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  #6  
Old 12-17-2010, 08:43 PM
digdoug88 digdoug88 is offline
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I tested the battery and it is fully charged. The cables and connectors are in extremely good condition and do not show any wear. I have checked the on/off switch that is located above the battery in the trunk, and that is in the on position. Is there a fuse in that switch that I should check? The owner's manual is of no help, since it assumes that you would not change the battery yourself. Any other thoughts?
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  #7  
Old 12-17-2010, 10:01 PM
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Expo BMW Expo BMW is offline
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Location: City of L.A.
 
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Mein Auto: E65,P71 Police Intercept.
Take the battery to Auto Zone to have it tested. Connecting a voltmeter does no good if there is no load on the battery. Do you get anything on iDrive with the engine off?
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  #8  
Old 12-17-2010, 11:45 PM
digdoug88 digdoug88 is offline
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The way I tested the battery was with a 100 amp load tester. The problem is not the new battery.
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  #9  
Old 12-18-2010, 10:31 AM
digdoug88 digdoug88 is offline
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Thumbs down 745i battery replacement problem (cont'd)

Just connected booster cables to charging points in the engine compartment and nothing. No power at all. Battery connections in the back are good. Checked the fuses in the trunk compartment. Tried to check fuses in the glove compartment.... but coudn't see that well. I don't even know if any of the fuses would keep the entire car from getting any power.
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  #10  
Old 12-18-2010, 05:43 PM
SOUTHERNCOMFORT SOUTHERNCOMFORT is offline
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Ok we know that the NEW Battery will not start the car. If it is possible, put the old Battery back in or try and jump the car off with the old Battery to see if it will start. If your baby starts with the old Battery then you do need to register your New Battery.
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  #11  
Old 12-21-2010, 11:28 AM
CarpeDM CarpeDM is offline
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Quote:
Originally Posted by digdoug88 View Post
Just connected booster cables to charging points in the engine compartment and nothing. No power at all. Battery connections in the back are good. Checked the fuses in the trunk compartment. Tried to check fuses in the glove compartment.... but coudn't see that well. I don't even know if any of the fuses would keep the entire car from getting any power.

any more update on this? were you able to get yours started?
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  #12  
Old 12-21-2010, 11:34 AM
CarpeDM CarpeDM is offline
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Location: Harford County, MD
 
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Mein Auto: '03 745Li
My 7 needs a new battery, and I am thinking about getting it replaced at a local european auto shop. They say they have a tool (i assume INPA and necessary software to register a new battery). Since this shop is much cheaper than the price at a dealership, I am seriously thinking about getting it done there.

My question to fellow bimmerfest folks is, can any shop with right registering tools/software can register the new battery just like what dealership does? As much as I would like to trust them, I also don't want to have any follow up issues later on from it.

Anyone installed and registered their battery at an indy shop and works just fine??
I am quoted less than $300 bucks, and that is about $200 saving from the dealership.

Thanks!
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  #13  
Old 12-21-2010, 11:44 AM
joej85 joej85 is offline
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If he has INPA or Progman he should be able to register the battery no problem. Just ask him what tool he is going to use. The Auto Authority or Bavarian Technic tools might also let you register the battery.

What battery is he putting in? The same AGM battery the dealer uses?
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  #14  
Old 12-21-2010, 12:04 PM
irokdastar383 irokdastar383 is offline
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i dont think its a registration problem . it should at least start even when not registered. the whole point of regisering the batt is so the car doesnt over charge it but it still should start up without it
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  #15  
Old 12-21-2010, 01:35 PM
CarpeDM CarpeDM is offline
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Quote:
Originally Posted by joej85 View Post
If he has INPA or Progman he should be able to register the battery no problem. Just ask him what tool he is going to use. The Auto Authority or Bavarian Technic tools might also let you register the battery.

What battery is he putting in? The same AGM battery the dealer uses?
I don't know exactly what battery he will put in on my 7.
He just asked me if I have the whilte or non-white one (some sort of gel type and non?)
According to the guy, '03 7 series came with 2 different types of battery.
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  #16  
Old 12-21-2010, 01:54 PM
mrringtone mrringtone is offline
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Check out http://www.bimmershops.com I found a shop in Houston that will charge me $50.00 to register the battery and they said if I need an install and register it's $96.00
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  #17  
Old 12-23-2010, 10:22 AM
Keif Keif is online now
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I'll also register batteries in Houston, just maybe pick up some coffee or an energy drink for me. =]
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  #18  
Old 12-23-2010, 10:59 AM
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7Figurez 7Figurez is offline
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I am in the northern VA and Rockville MD area alot. I have Progman if you need help to register the new battery, it only takes a few minutes to complete the registration. PM me if you need help.
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  #19  
Old 12-11-2011, 05:43 PM
nguyentuan64 nguyentuan64 is offline
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Location: Texas
 
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Mein Auto: 745i
Quote:
Originally Posted by Keif View Post
I'll also register batteries in Houston, just maybe pick up some coffee or an energy drink for me. =]
Hi there,
I don't know if you still follow this thread. I am in Houston and would love your help in registering the battery of my 2004 BMW 745il.
Thank you.
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  #20  
Old 12-11-2011, 07:29 PM
Skinny Puppy Skinny Puppy is offline
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Location: Vancouver Island BC Canada
 
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Mein Auto: E38/E66/TubeChassis YJ
Sounds like a fuseable link issue. I don't know where they are in the e65/66, but I do in the E38. Perhaps use spaghetti coder to find the wiring diagram, and look where the fuseable link is. Also check major fuses in the trunk, and Ebox under the hood.

Only BMW can make changing an aging battery such a gamble.
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  #21  
Old 12-11-2011, 08:58 PM
HerbP HerbP is offline
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This is not a registration problem. The battery is registered to the car for charging purposes. You have a loose wire, a bad fuse-able link, or a starter problem.

Good Luck!
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  #22  
Old 03-05-2012, 07:37 AM
Iamking27 Iamking27 is offline
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Location: Clinton md
 
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Mein Auto: 2004 BMW 745li
Hi. I would like to know if your available to register a battery this weekend. Just bought it for my 745. And need it register. Can you PM me so we can set something up. Would appreciate it. These dealer prices for registration is ridiculous.
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  #23  
Old 08-05-2012, 07:55 PM
Cjkidd Cjkidd is offline
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Location: San Jose,ca
 
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Mein Auto: 03 745i
Was wondering if there's someone in San Jose or Bay Area that could. Help me register a new battery really don't want to pay a shop for something that everyone says only takes a few minutes. Much rather tip someone here instead
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