E90Post
 


Extreme Power House
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Comfort Access issues, keyfob dead



Reply
 
Thread Tools Search this Thread
      06-27-2018, 08:19 PM   #1
jc_lbc
Private First Class
jc_lbc's Avatar
1
Rep
189
Posts

Drives: 318ti
Join Date: Mar 2010
Location: Long Beach, CA

iTrader: (0)

Comfort Access issues, keyfob dead

I recently lost function of the second keyfob for my wagon and Iím super irritated. Can anyone tell me if this is a fob issue or CA issue? How it went down...

Keyfob A starts giving me battery low warnings. Change the battery (yes I put it in correctly) and keyfob stops working unless inserted in the interior key slot or the backup key pulled and inserted in the door. Ok, so swap keys with my wife since she almost never drives the car... after a few months, keyfob B begins with the low battery warning. Change that battery and now it will not work either.

I think in the 7 years Iíve had the car I replaced at least one of the batteries once and it worked fine. Seems like it would be an issue with the fob since CA worked fine with the other key until I pulled the battery. If it is the keys, holy crap is that some seriously awful electronics engineering for the keys to have a 7 or 8 year lifespan.

Any hope for these things or do I have to visit my dealer and get bent over?
Appreciate 0
      06-28-2018, 12:22 AM   #2
bluewater328
First Lieutenant
United_States
73
Rep
386
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

Your keyfob needs a different kind of charge separately every once in awhile. A new battery doesnt resolve this ó its a different charge that occurs when you let the key charge in the keyslot while driving. Just do that fir a few trips and youíre set.


I know it sounds weird, but I had to have the sercice advisor break the whole thing down for me in year two.
Appreciate 0
      06-28-2018, 12:44 AM   #3
jc_lbc
Private First Class
jc_lbc's Avatar
1
Rep
189
Posts

Drives: 318ti
Join Date: Mar 2010
Location: Long Beach, CA

iTrader: (0)

I've been driving it around like this for over a week and it still doesn't work. How long should it have to be in the ignition?
Appreciate 0
      06-28-2018, 12:00 PM   #4
ctuna
Major General
694
Rep
8,001
Posts

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

The comfort access key does not charge it is only powered by
the battery.
If it doesn't have a removable battery it's not a comfort access
fob.

http://www.bimmerfest.com/forums/sho...d.php?t=903551

the mashman entry's in the link above are the most informative.

If you want to charge a non comfort access battery look at the following


Last edited by ctuna; 06-28-2018 at 12:06 PM.
Appreciate 0
      06-28-2018, 03:43 PM   #5
PaKii94
Private
2
Rep
84
Posts

Drives: BMW 335D
Join Date: Aug 2016
Location: Chicago, IL

iTrader: (0)

I might also be having this issue. I hear you have to retrain the key or something. There was a post about it on the FB page... I'll try finding it.
Appreciate 0
      06-28-2018, 04:48 PM   #6
bluewater328
First Lieutenant
United_States
73
Rep
386
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

I can tell you from experience that there is some sort of charge (or maybe its just a requirement to pair to the car) that's required by the comfort access key fob (at least in the LCI E90s) which requires you to put it in the key slot to get "charged." I had his EXACT experience and that was the solution.

I thought the dealer was nuts until I did it and it resolved everything. That is also how the service advisor pulls your data initially as your car information (to a degree) is synched to the key when it is inserted.
Appreciate 0
      06-28-2018, 04:49 PM   #7
bluewater328
First Lieutenant
United_States
73
Rep
386
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

Quote:
Originally Posted by jc_lbc View Post
I've been driving it around like this for over a week and it still doesn't work. How long should it have to be in the ignition?
Should have only taken a few rides to rectify it (if more than one decent trip). After that I don't know.
Appreciate 0
      06-29-2018, 08:01 PM   #8
ctuna
Major General
694
Rep
8,001
Posts

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

updating the info in the Fob has nothing to do with charging.
Appreciate 0
      06-29-2018, 10:07 PM   #9
jc_lbc
Private First Class
jc_lbc's Avatar
1
Rep
189
Posts

Drives: 318ti
Join Date: Mar 2010
Location: Long Beach, CA

iTrader: (0)

So I need a virgin key and I need to find someone that can program the key. Is this correct?
Appreciate 0
      06-29-2018, 10:44 PM   #10
ctuna
Major General
694
Rep
8,001
Posts

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

It will be hard to find someone to program a CA key.
Read the Mashman entrys and the side effects of not
doing it through the dealer.
Appreciate 0
      07-04-2018, 01:57 PM   #11
Nickco43
Lieutenant
Nickco43's Avatar
331
Rep
555
Posts

Drives: 06 BMW 330i
Join Date: Apr 2018
Location: Philadelphia, PA

iTrader: (0)

Garage List
2006 BMW 330i  [0.00]
Quote:
Originally Posted by jc_lbc View Post
So I need a virgin key and I need to find someone that can program the key. Is this correct?
http://www.e90post.com/forums/showthread.php?t=1510527

Wait a few weeks until I get my equipment. You MAY be able to clone your existing key with a $60 tool.
Appreciate 0
      07-04-2018, 02:12 PM   #12
jc_lbc
Private First Class
jc_lbc's Avatar
1
Rep
189
Posts

Drives: 318ti
Join Date: Mar 2010
Location: Long Beach, CA

iTrader: (0)

Ok, interesting. Iíll follow the thread.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 02:17 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST