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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 07-06-2013, 01:48 AM
xkye77 xkye77 is offline
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2003 BMW e65 735i key fob not charging

I have driven it for two hours (stopped in between but not long) but they key fob still showing only a flashing red bar on the display screen. How to charge the key fob properly? How long does it take and what is the normal lifespan for the battery inside the keyfob? Do I have to replace it?
I have ordered lv2020 from eBay and waiting for the arrival. Do i need reprogramming after that?
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  #2  
Old 07-07-2013, 07:34 AM
Thesatman Thesatman is offline
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I'm pretty sure you can just change the battery in the key fob and it should work with no programming...at least i know it does in mine.
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  #3  
Old 07-07-2013, 08:52 AM
Mr.750 Mr.750 is offline
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  #4  
Old 07-07-2013, 04:01 PM
xkye77 xkye77 is offline
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Quote:
Originally Posted by Mr.750 View Post
Mine is a non comfort access. I have heard people saying Panasonic LV2020 is the model. Anyone can confirm?
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  #5  
Old 07-08-2013, 01:31 AM
Piers1989 Piers1989 is offline
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If it not the comfort access fob then it should charge up while it is in the car on its own.
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  #6  
Old 07-08-2013, 03:29 PM
mws mws is offline
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was waiting until I had better info but...

Quote:
Originally Posted by xkye77 View Post
Mine is a non comfort access. I have heard people saying Panasonic LV2020 is the model. Anyone can confirm?

yes, that's the proper battery part number FROM Panasonic, but... I am not sure the little + and - terminal harness that is literally welded ON to the battery is the right one.

I just got done performing major surgery on my non-comfort access fobs last weekend. I swapped in fresher batteries from the two fobs I had from my wrecked car. I did it because I researched it, and while I might be able to get the car to open the doors with the new fobs, one can NOT get the transponder on another fob to work with your car. It has to come from BMW. by the way... The surgery worked. My fobs have fresher batteries.

but after looking at the pictures on the 2020s on the internets, the terminal legs look to be in a different position. You would not be able to solder it right in--if I am correct. I am hoping the dil-rods who sell them simply post a generic picture and have the correct terminal legs on the batteries.

bug me some more and I will take some pics.

also, cracking open your non-comfort access fob is a job for someone not afraid to damage stuff in order to repair it. You have to break a glue line all the way around the fob.
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  #7  
Old 07-08-2013, 03:43 PM
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Quote:
Originally Posted by mws View Post
yes, that's the proper battery part number FROM Panasonic, but... I am not sure the little + and - terminal harness that is literally welded ON to the battery is the right one.

I just got done performing major surgery on my non-comfort access fobs last weekend. I swapped in fresher batteries from the two fobs I had from my wrecked car. I did it because I researched it, and while I might be able to get the car to open the doors with the new fobs, one can NOT get the transponder on another fob to work with your car. It has to come from BMW. by the way... The surgery worked. My fobs have fresher batteries.

but after looking at the pictures on the 2020s on the internets, the terminal legs look to be in a different position. You would not be able to solder it right in--if I am correct. I am hoping the dil-rods who sell them simply post a generic picture and have the correct terminal legs on the batteries.

bug me some more and I will take some pics.

also, cracking open your non-comfort access fob is a job for someone not afraid to damage stuff in order to repair it. You have to break a glue line all the way around the fob.


You might want to read this topic . You can re-code a used key .
You actually could have swapped chips from your keys & used your old Fob .

http://www.bimmerfest.com/forums/sho...d.php?t=599540


there is a stickie topic above at the top of the page in this section
you should look in every once in a while .


Helpful diy topics for the e65 e66
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Last edited by PAPER; 07-08-2013 at 03:46 PM.
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  #8  
Old 07-08-2013, 04:08 PM
mws mws is offline
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man, just a couple of months ago I searched and searched and searched all over the place and found nothing but people saying it might be possible with like $10K in gear and some huge black box. Not sure how this got past me. I'll look into it. thanks!
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  #9  
Old 07-10-2013, 06:01 AM
fsomuah fsomuah is offline
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2003 BMW e65 735i key fob not charging

My 2004 745Li remote is not working...I guess it's the battery but it doesn't have a battery and I was told to drive for few hrs and its gonna charge itself....I drove from NJ to NYC and came back but still acting up....

I wud like to change it but don't know how ....any help wud be much appreciated ...thanks


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  #10  
Old 07-10-2013, 07:35 AM
mws mws is offline
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first off, is the Fob the type you have to plug into the car in order to start it?

if so you'll need to crack the glue line open (essentially breaking it)

and the next question is: do you solder? could be a battery, could be a micro switch has broken loose. For either, with the non-comfort access Fob, you must solder.

bear in mind, a new programmed, ready to go non-comfort access remote from BMW should be able to be bought for about $140 or so.
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  #11  
Old 07-10-2013, 10:55 AM
fsomuah fsomuah is offline
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2003 BMW e65 735i key fob not charging

Thanks I think I will check with the BMW dealer since its something affordable ....but it's a non-comfort and also I insert it before I hit start button.

It sometimes work and sometimes doesn't .....it stops working from 3 weeks ago.

I always use the key to open the car and close the car.


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  #12  
Old 07-18-2013, 03:33 PM
mws mws is offline
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So I had a chat with Paper and I think I can simplify the process to actually re-program a NON comfort access key. It's really REALLY not that simple. I have recently priced a pre-programmed ready-to-use non-comfort access fob from BMW for $140. This process to try to buy a used fob and get away with trying to save money by programming it to work on your car could easily cost that much, unless you "know a guy".

1. break open the fob you want to use. you have to crack the glue all the way around. It's not easy. I have broken open two of them. It requires you to literally damage your fob.
2. buy a blank UNPROGRAMMED Phillps chip from Ebay. Apparently, any fob that has been programmed and used on a car, can NOT be re-programmed. You have to have a blank chip.
3. go to some serious solder tech guy who can solder extremely small solder joints, have him remove the phillips chip from the circuit board that came out of the replacement fob. This requires skill.
4. then they have to solder in the NEW phillips chip. they have to do this, and not F it all up. Just any old idiot with a solder gun can not do this job, they must be a skilled specialist.
5. Take this fob and re-glue it back together. It requires Krazy glue and at least 3 or 4 small clamps. You MUST clamp it securely on all 4 corners or the fob might dry too thick and it will not fit into your fob hole on the car. I know this because I have F-d it up myself on one fob when I re-soldered some newer batteries into.
6. find someone with a GT1 programmer that has a keyfob connector. only they can program the new chip in your fob.

or, forget all this, go to BMW-- bring your car's reg and your ID and buy one ready to go, for $140. seems easy enough to me.

Last edited by mws; 07-18-2013 at 03:34 PM.
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  #13  
Old 07-18-2013, 03:55 PM
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Quote:
Originally Posted by mws View Post
So I had a chat with Paper and I think I can simplify the process to actually re-program a NON comfort access key. It's really REALLY not that simple. I have recently priced a pre-programmed ready-to-use non-comfort access fob from BMW for $140. This process to try to buy a used fob and get away with trying to save money by programming it to work on your car could easily cost that much, unless you "know a guy".

1. break open the fob you want to use. you have to crack the glue all the way around. It's not easy. I have broken open two of them. It requires you to literally damage your fob.
2. buy a blank UNPROGRAMMED Phillps chip from Ebay. Apparently, any fob that has been programmed and used on a car, can NOT be re-programmed. You have to have a blank chip.
3. go to some serious solder tech guy who can solder extremely small solder joints, have him remove the phillips chip from the circuit board that came out of the replacement fob. This requires skill.
4. then they have to solder in the NEW phillips chip. they have to do this, and not F it all up. Just any old idiot with a solder gun can not do this job, they must be a skilled specialist.
5. Take this fob and re-glue it back together. It requires Krazy glue and at least 3 or 4 small clamps. You MUST clamp it securely on all 4 corners or the fob might dry too thick and it will not fit into your fob hole on the car. I know this because I have F-d it up myself on one fob when I re-soldered some newer batteries into.
6. find someone with a GT1 programmer that has a keyfob connector. only they can program the new chip in your fob.

or, forget all this, go to BMW-- bring your car's reg and your ID and buy one ready to go, for $140. seems easy enough to me.


the only problem with purchasing 1 from the dealer is =
you can only buy up to 10 key's . So what if you have
already reached that limit ???

The reason I bring this up , is cause that is the reason
I looked into reprogramming old key's . Someone on
the site was already at that limit & needed an alternative
to replacing there Cas & other modules ( which the dealer wanted to do )
along with the proper programming & coding needed .
Which would have been well over $3k to $4k .
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  #14  
Old 07-18-2013, 04:16 PM
mws mws is offline
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If that's the case then reprogramming is fine, sure. It's just you have to be a resourceful guy. Not everyone is. Half the battle is looking up and finding the two or three different guys you'd need to do the job. Some people might feel more comfortable having someone else crack open their Fob, for instance. Not sure who you would hire to do that?

was my list of the procedure accurate, Paper? I want to make sure I did not make it confusing. Was trying to help out.

meanwhile...Not sure how someone reaches the 10-fob limit???? wow.
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  #15  
Old 07-18-2013, 04:24 PM
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Quote:
Originally Posted by mws View Post
If that's the case then reprogramming is fine, sure. It's just you have to be a resourceful guy. Not everyone is. Half the battle is looking up and finding the two or three different guys you'd need to do the job. Some people might feel more comfortable having someone else crack open their Fob, for instance. Not sure who you would hire to do that?

was my list of the procedure accurate, Paper? I want to make sure I did not make it confusing. Was trying to help out.

meanwhile...Not sure how someone reaches the 10-fob limit???? wow.
Yes your list is very accurate

I have no clue how someone would reach 10 Fobs
either , but apparently some people have ...
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  #16  
Old 07-18-2013, 04:41 PM
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SuperSnoop SuperSnoop is offline
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2003 BMW e65 735i key fob not charging

I picked up a couple cheap, used keys and tried to remove the chip on one. My soldering skills are not good enough. If anyone wants to try it with the other key, let me know. I'll let it go cheap.


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  #17  
Old 12-09-2013, 03:20 AM
wucrew wucrew is offline
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Didnt want to start a new topic as this is also a key issue. I have 2 sets of keys and when I tried to use my spare I get the errors below on startup.

If in the key and wait to long it will spit it out and I cannot start it up. I push it in and quickly turn it on then it runs but just constantly gives me the error during my drive.

Just seeing if anyone has had this issue before with a key they do not use often?
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  #18  
Old 12-09-2013, 07:07 AM
fsomuah fsomuah is offline
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2003 BMW e65 735i key fob not charging

The key needs to be reprogrammed at the BMW dealership or you either buy new one which cost about 189$......also this fobs goes with the car Vin# and u cannot use it on different vin which will constantly give u error....good luck


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Old 12-09-2013, 04:17 PM
wucrew wucrew is offline
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Originally Posted by fsomuah View Post
The key needs to be reprogrammed at the BMW dealership or you either buy new one which cost about 189$......also this fobs goes with the car Vin# and u cannot use it on different vin which will constantly give u error....good luck


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So my spare key has lost its program? this can happen by me not using the key for a long period of time?

Guess to the stealer I go
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  #20  
Old 12-09-2013, 04:36 PM
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Quote:
Originally Posted by wucrew View Post
So my spare key has lost its program? this can happen by me not using the key for a long period of time?

Guess to the stealer I go
No it has not since it is still starting your car . Your key is just dead & needs
to be re-charged . You need to take your car for a very long drive & make
sure the key stay's in the Cas so it will charge .

Or you can try this funny method I found on YouTube that might work ...


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  #21  
Old 12-09-2013, 07:55 PM
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2003 BMW e65 735i key fob not charging

If paper's charging suggestion doesn't work, the remote's battery might have gone bad. I think there's a DIY to replace it, but it's risky.


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Old 12-10-2013, 02:27 AM
wucrew wucrew is offline
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Originally Posted by PAPER View Post
No it has not since it is still starting your car . Your key is just dead & needs
to be re-charged . You need to take your car for a very long drive & make
sure the key stay's in the Cas so it will charge .

Or you can try this funny method I found on YouTube that might work ...


Thank you Paper and Snoop thats what I assumed as I did not think the key could lose its program. And I have taken my main key apart before as my unlock button broke and I had to solder it back in so I know that procedure. I will try and use my spare key when I have a long drive next and see if it clears this isssue.

Thanks guys
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  #23  
Old 02-10-2014, 12:25 PM
ssdriver27 ssdriver27 is offline
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Rather then start a new thread on this......

I received the same message the other night about the key wasn't recognized and not to turn off the engine. So what did I do???? YEP turned off the car to try reinserting the key to get rid of this error as I had never seen this before and had no idea what was about to go down. I was stranded 30 miles from home for 2 hours in 20 F cold ass weather waiting for a tow truck.

So here is what mine is doing. the FOB suddenly stopped working, it wouldn't lock or unlock my car and when I try putting it in the dash it just spits it back out instead of holding the FOB in. It does lock in but when you push the spring loaded part it does not stay all the way in. it spits right back out (normally you push it in to lock it and push it again to let it release) and obviously no starting or anything works now.

So.... I performed surgery on the FOB and replaced the battery with an equivalent and still nothing. no locking or unlocking and of course still spits it right back out. Im REALLy hoping I don't have to replace the CAS as I was quoted $800.00 for the part alone.

Any ideas ????
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Old 02-10-2014, 12:50 PM
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Quote:
Originally Posted by ssdriver27 View Post
Rather then start a new thread on this......

I received the same message the other night about the key wasn't recognized and not to turn off the engine. So what did I do???? YEP turned off the car to try reinserting the key to get rid of this error as I had never seen this before and had no idea what was about to go down. I was stranded 30 miles from home for 2 hours in 20 F cold ass weather waiting for a tow truck.

So here is what mine is doing. the FOB suddenly stopped working, it wouldn't lock or unlock my car and when I try putting it in the dash it just spits it back out instead of holding the FOB in. It does lock in but when you push the spring loaded part it does not stay all the way in. it spits right back out (normally you push it in to lock it and push it again to let it release) and obviously no starting or anything works now.

So.... I performed surgery on the FOB and replaced the battery with an equivalent and still nothing. no locking or unlocking and of course still spits it right back out. Im REALLy hoping I don't have to replace the CAS as I was quoted $800.00 for the part alone.

Any ideas ????
Have you tried charging the cars battery ??

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  #25  
Old 02-10-2014, 02:10 PM
ssdriver27 ssdriver27 is offline
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Quote:
Originally Posted by PAPER View Post
Have you tried charging the cars battery ??

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No but I had been driving it everyday and it hadn't shown any signs of problems before this.
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