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7 Series - F01 / F02 (2009 - current)
The new re-designed 7 series F01 / F02 leads off the BMW Fxx chassis code!

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  #1  
Old 05-07-2013, 08:38 PM
dbs600 dbs600 is offline
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Low Key Fob Battery Question...

How does placing the key fob near the steering wheel column help 'charge' it?

It does so wirelessly!?
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  #2  
Old 05-07-2013, 08:57 PM
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rajeek rajeek is offline
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Originally Posted by dbs600 View Post
How does placing the key fob near the steering wheel column help 'charge' it?

It does so wirelessly!?
Never heard this. From what I know it is how the car pairs itself with the key by placing it next to the steering column. The key gets power from a small button type battery. Maybe someone knows something I don't about this.
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  #3  
Old 05-07-2013, 09:14 PM
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DFEL750I DFEL750I is online now
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The E65\66 cars with comfort access uses a replaceable CR2032 battery. I would assume the F01/02 battery would be the same since the design of the key fob is similar.
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Old 05-07-2013, 10:57 PM
dbs600 dbs600 is offline
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Not sure, but my remote completely stopped working the other day; I believe the battery needs to be replaced (2.5 years old). Called BMW Assist (forgot I had BMW Remote on my iPhone) to unlock my doors. Car wouldn't start with the key in the car and I was told to place the remote near the steering column. Didn't work first couple of attempts, but after keeping the remote there for a little while (2 minutes?), and reattempting, the car started. Key has worked since, but I'm bringing in the car for service tomorrow and will ask them to replace the battery. Anyone know if the battery is covered under warranty?

Last edited by dbs600; 05-07-2013 at 11:07 PM.
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  #5  
Old 05-07-2013, 11:47 PM
KingTrack KingTrack is online now
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Interesting, I had an issue where the car wouldnt start and the system told me to place the key next to the steering column and it started. I replaced the battery myself though, 3 batteries for 12 bucks at radioshack. Works fine now.
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Old 05-08-2013, 12:13 AM
RGSM RGSM is offline
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You should get a warning on the i-drive screen when the battery in the remote is low.
Pick up a few batteries at Radio Shack. It takes all of 30 seconds to change.
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Old 05-08-2013, 07:18 AM
BaranE BaranE is offline
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On old E60s and E90s fobs used to be charged inductively on the ignition when you put the key in to start the engine. However this no longer happens as we all have at least basic keyless go without comfort access.
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  #8  
Old 05-08-2013, 08:35 AM
dbs600 dbs600 is offline
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Hmm; okay; thanks for your replies, gentlemen. So the older remotes charged inductively; very neat! I'm just wondering what's occurring when the remote doesn’t work, but placing next to the steering wheel brings it back to life; maybe these charge up as well - but only for a short amount of use thereafter?
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Old 05-08-2013, 08:47 AM
BaranE BaranE is offline
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Quote:
Originally Posted by dbs600 View Post
Hmm; okay; thanks for your replies, gentlemen. So the older remotes charged inductively; very neat! I'm just wondering what's occurring when the remote doesn’t work, but placing next to the steering wheel brings it back to life; maybe these charge up as well - but only for a short amount of use thereafter?
Basic immobilizer system is passive. i.e. no energy is needed on transponders part to be read. So basically when you put it next to the sw you let the reader read the immobilizer chip on the fob passively.
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Old 05-08-2013, 09:17 AM
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Popoemt Popoemt is online now
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Low Key Fob Battery Question...

Quote:
Originally Posted by KingTrack View Post
Interesting, I had an issue where the car wouldnt start and the system told me to place the key next to the steering column and it started. I replaced the battery myself though, 3 batteries for 12 bucks at radioshack. Works fine now.
Dang! That's a good price, I just bought 1 battery from Target (my fob battery died after 3 months!!!) and it was $6...


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Old 05-08-2013, 09:20 AM
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Low Key Fob Battery Question...

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Originally Posted by dbs600 View Post
Anyone know if the battery is covered under warranty?
I just read a thread about this and it said the battery is covered... If you live a distance from the nearest center then try changing it out yourself, it literally took me about 30 seconds to pop the fob open and install a new battery, easy peasy... I'd check around on battery prices though...


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Old 05-08-2013, 01:23 PM
BaranE BaranE is offline
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Quote:
Originally Posted by Popoemt View Post
I just read a thread about this and it said the battery is covered... If you live a distance from the nearest center then try changing it out yourself, it literally took me about 30 seconds to pop the fob open and install a new battery, easy peasy... I'd check around on battery prices though...


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I just asked my dealer on the latest oil change and they did it for free. Changed the batteries on both fobs just to be safe even though only one fob gave me errors.

This is the latest status of my fobs
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  #13  
Old 05-08-2013, 02:34 PM
dbs600 dbs600 is offline
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Just dropped my car off at the dealer; service advisor said that it's covered, but I'm wondering what placing the remote near the steering wheel does to bring it back to life...
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  #14  
Old 05-08-2013, 09:01 PM
dbs600 dbs600 is offline
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For anyone wondering same:

What an answer found in Post #7(!):

http://f10.5post.com/forums/showthread.php?t=837796

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  #15  
Old 05-08-2013, 09:59 PM
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rajeek rajeek is offline
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Quote:
Originally Posted by BaranE View Post
I just asked my dealer on the latest oil change and they did it for free. Changed the batteries on both fobs just to be safe even though only one fob gave me errors.

This is the latest status of my fobs
Wow! Got some bling on those FOB's. Now just bedazzle them and you will be all set.
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  #16  
Old 05-09-2013, 03:13 AM
BaranE BaranE is offline
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Originally Posted by rajeek View Post
Wow! Got some bling on those FOB's. Now just bedazzle them and you will be all set.
Never thought of bedazzling them. But I need to bedazzle my seats as well to match the key fob
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  #17  
Old 07-07-2013, 05:18 PM
xkye77 xkye77 is offline
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Quote:
Originally Posted by KingTrack View Post
Interesting, I had an issue where the car wouldnt start and the system told me to place the key next to the steering column and it started. I replaced the battery myself though, 3 batteries for 12 bucks at radioshack. Works fine now.
Hi there,

Is your BMW non comfort access? What is the battery model?
Panasonic VL2020? Vertical or horizontal?
Do you need programming after replacing the battery?

Thank you.
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  #18  
Old 07-09-2013, 07:00 PM
abbjax abbjax is offline
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Low Key Fob Battery Question...

I just went by the dealer for this tonight. Battery replaced and works fine w/comfort access. No reprogramming required. If the battery dies pull the metal key part out and use that to unlock the door manually. Hold the fob near the Start button and the car will turn on. It doesn't charge the battery in the fob- there's a chip or something that the car senses.


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