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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Canada > Key/ fob died this morning...no recharge?



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      07-01-2012, 01:56 PM   #1
Fozzy
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Key/ fob died this morning...no recharge?

Hey hoping someone knows the answer other than buying a new one from the dealership. I don't have comfort access and it's an 09 328xdrive e92.

I walked out to my car this morning and the fob was dead - no warning. Wouldn't unlock the doors or trunk and made no sound. I opened the key and manually got in the car and drove about 1 hour. I think the key is supposed to recharge at this point.

However, after parking my car the fob was still dead. I couldn't open the trunk or lock the doors. Totally dead.

Any way to get this fob working again?

Also, does it need reprogramming - some of my car settings were of as I started it up. ie: heat was cranked to 28 degrees. Although I'm not as worried about this.
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      07-01-2012, 03:18 PM   #2
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what gives you the idea the fob battery is 'rechargable' ?

It's not. You will need to buy a new lithium battery to replace. Usually every 2 -3 yrs.

Just goto The Source.
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      07-01-2012, 04:27 PM   #3
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One picture is enough, you can do it within 1 min.

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      07-01-2012, 04:45 PM   #4
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sweet thanks guys...after searching this forum several people said it was rechargable. Great diagram - except my key doesn't come apart in the 1/4 piece like yours does. I'm assuming you have comfort access.

Looks like I'll go to the dealer since I'm still under warranty.

http://www.bimmerfest.com/forums/sho...d.php?t=523264

Last edited by Fozzy; 07-01-2012 at 05:14 PM.
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      07-01-2012, 06:53 PM   #5
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bottom line is if you have comfort access your key fob batter is NOT rechargeable. It has to be replaced by CR2032 (iirc) battery.

if you do not have comfort access, then your battery is rechargeable and does so whenever you insert your key fob into the ignition slot.

most likely the dealer would have to replace the whole key fob if your rechargeable battery is dead for cars without CA.
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      07-01-2012, 09:57 PM   #6
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Quote:
Originally Posted by gaifaun
bottom line is if you have comfort access your key fob batter is NOT rechargeable. It has to be replaced by CR2032 (iirc) battery.

if you do not have comfort access, then your battery is rechargeable and does so whenever you insert your key fob into the ignition slot.

most likely the dealer would have to replace the whole key fob if your rechargeable battery is dead for cars without CA.
Not sure where you got your info, but this is incorrect....

I have comfort access and my battery requires recharging every few days by hooking it up in the ignition slot.

And no I'm not crazy lol
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      07-01-2012, 10:08 PM   #7
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Well, if your fob is not the same with mine, then I'm afraid you should go to dealership for a new one
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      07-02-2012, 02:42 AM   #8
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Quote:
Originally Posted by bobblehead View Post
what gives you the idea the fob battery is 'rechargable' ?

It's not. You will need to buy a new lithium battery to replace. Usually every 2 -3 yrs.

Just goto The Source.
AND what gives YOU the idea to shit on peoples thread with the wrong information?

here's a direct quote from the owners manual pdf

Quote:
Each remote control contains a rechargeable
battery that is automatically recharged when it
is in the ignition lock
while the car is being
driven. Use each remote control at least twice a
year for longer road trips in order to maintain the
batteries' charge status. In cars with convenient
access*, the remote control contains a replaceable battery, refer to page 28
please take note of the bolded part

Quote:
Originally Posted by Zebra99 View Post
Not sure where you got your info, but this is incorrect....

I have comfort access and my battery requires recharging every few days by hooking it up in the ignition slot.

And no I'm not crazy lol
then something is wrong with ur key, my comfort access key does not need any recharging at all, in fact ive been driving with the same ca key for the past year and never have i stuck the key into the slot to get it "recharged"

ps: ca keys cannot be recharged, they do not have a rechargeable battery, ca keys r the ones that needs the battery replaced after its out. if bmw designed the key to be recharged every few days, then that kinda defeats the whole purpose of CA......
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Last edited by TOPEC; 07-02-2012 at 02:49 AM.
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      07-02-2012, 02:53 AM   #9
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Quote:
Originally Posted by Zebra99 View Post
Not sure where you got your info, but this is incorrect....

I have comfort access and my battery requires recharging every few days by hooking it up in the ignition slot.

And no I'm not crazy lol

I'm just guessing here but I think when your comfort access key fob is in the ignition slot, the radio frequency is turned off (otherwise it's always on). It gives your battery a break and it recharges itself a little. It's like taking the batteries out of a flashlight after it's dead, then putting it back in. It'll recharge itself a little but not a lot.

Anyway the battery for the comfort access key fob is a CR3032 3V lithium battery. I don't know of any that's actually rechargeable to be honest.
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      07-02-2012, 08:44 AM   #10
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Well I have CA and I find that after a few days use it doesn't have the same range or sensing capabilities as when it's "fully" charged.

Funny thing is both keys have been replaced back in Dec 2011. Maybe something is wrong with mine :'(
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      07-02-2012, 09:25 AM   #11
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Like others have said, you only have a replacable battery with CA.
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      07-02-2012, 11:24 AM   #12
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Quote:
Originally Posted by Zebra99 View Post
Well I have CA and I find that after a few days use it doesn't have the same range or sensing capabilities as when it's "fully" charged.

Funny thing is both keys have been replaced back in Dec 2011. Maybe something is wrong with mine :'(
My car has comfort access and the fob stays in my pocket 99% of the time.
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      07-03-2012, 09:42 AM   #13
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Quote:
Originally Posted by Auto Pilot View Post
My car has comfort access and the fob stays in my pocket 99% of the time.
+1
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      07-03-2012, 10:08 AM   #14
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Even BMW dealers have trouble with this. My 2006 E90 had comfort access and the battery died in the fob. I took it to BMW Misssissauga and the service department swore up and down that (a) comfort access was not available on 2006 E90s and (b) that the battery was rechargeable.
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      07-03-2012, 02:24 PM   #15
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1. I do not have comfort access
2. My Key Fob is rechargeable ONLY
3. My Key Fobs do NOT have a removal battery compartment

My spare key wouldn't charge for a while (It took a long while to charge up.. but now it's working perfectly)
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      07-03-2012, 06:49 PM   #16
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Quote:
Originally Posted by e9012345 View Post
1. I do not have comfort access
2. My Key Fob is rechargeable ONLY
3. My Key Fobs do NOT have a removal battery compartment

My spare key wouldn't charge for a while (It took a long while to charge up.. but now it's working perfectly)
Thanks, maybe I'll try using the dead one for a few weeks in the 'ignition' to see if it starts recharging again.
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      07-03-2012, 07:30 PM   #17
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Quote:
Originally Posted by Fozzy View Post
Thanks, maybe I'll try using the dead one for a few weeks in the 'ignition' to see if it starts recharging again.
Yeah buddy try that.. It does take time... I gave up after a few drives. Only till I forgot about it and drove it a while did I realize it started working fine.
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      07-03-2012, 10:01 PM   #18
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Comfort access is non-rechargeable CR 2032 lithium battery. Needs replacement every 1-3 years. my first battery lasted 3 years, present one is one year and still going strong with daily use in my pocket; never insert it in the intrument panel.
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      07-04-2012, 08:47 AM   #19
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Has anyone found the recharchable fobs to have shitty distance? I can only operate mine (both of them) from only few meters away. It's crap if I have to get close to the car to be able to open the windows. I would like to do it from within the house or something.
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      07-04-2012, 01:15 PM   #20
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Quote:
Originally Posted by kavadarci View Post
Has anyone found the recharchable fobs to have shitty distance? I can only operate mine (both of them) from only few meters away. It's crap if I have to get close to the car to be able to open the windows. I would like to do it from within the house or something.
I don't have personal experience, but everything I've read is that non CA fobs have great distance but CA fobs have poor distance.

Do metalic tints effect non CA fobs?
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      07-04-2012, 01:35 PM   #21
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Quote:
Originally Posted by kavadarci View Post
Has anyone found the recharchable fobs to have shitty distance? I can only operate mine (both of them) from only few meters away. It's crap if I have to get close to the car to be able to open the windows. I would like to do it from within the house or something.
+1

Wanted to turn on the alarm to scare off driving school instructors/students in the parking lot.

It's really silly having CA and then have to take the fob out, wave it around the trunk and use the other hand to open the trunk. Maybe that is why the F30 has the soccer ball kick trunk release.
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      07-04-2012, 01:58 PM   #22
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Kavadarci was referring to poor distance with non comfort access. Sounds like you have comfort access. Why do you need to take your fob out to open the trunk. I have CA and my fob stays in my pocket when I open the trunk lid.
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