Bimmerfest - BMW Forums

Bimmerfest - BMW Forums (http://www.bimmerfest.com/forums/index.php)
-   7 Series - F01 / F02 (2009 - current) (http://www.bimmerfest.com/forums/forumdisplay.php?f=143)
-   -   Low Key Fob Battery Question... (http://www.bimmerfest.com/forums/showthread.php?t=694747)

dbs600 05-07-2013 08:38 PM

Low Key Fob Battery Question...
 
How does placing the key fob near the steering wheel column help 'charge' it?

It does so wirelessly!?

rajeek 05-07-2013 08:57 PM

Quote:

Originally Posted by dbs600 (Post 7570174)
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.

DFEL750I 05-07-2013 09:14 PM

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.

dbs600 05-07-2013 10:57 PM

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?

KingTrack 05-07-2013 11:47 PM

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.

RGSM 05-08-2013 12:13 AM

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.

BaranE 05-08-2013 07:18 AM

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.

dbs600 05-08-2013 08:35 AM

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?

BaranE 05-08-2013 08:47 AM

Quote:

Originally Posted by dbs600 (Post 7570965)
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.

Popoemt 05-08-2013 09:17 AM

Low Key Fob Battery Question...
 
Quote:

Originally Posted by KingTrack (Post 7570509)
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...


Sent from BimmerApp mobile app

Popoemt 05-08-2013 09:20 AM

Low Key Fob Battery Question...
 
Quote:

Originally Posted by dbs600 (Post 7570458)
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... ;)


Sent from BimmerApp mobile app

BaranE 05-08-2013 01:23 PM

1 Attachment(s)
Quote:

Originally Posted by Popoemt (Post 7571078)
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... ;)


Sent from BimmerApp mobile app

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 :rofl:

dbs600 05-08-2013 02:34 PM

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...

dbs600 05-08-2013 09:01 PM

For anyone wondering same:

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

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

:)

rajeek 05-08-2013 09:59 PM

Quote:

Originally Posted by BaranE (Post 7571699)
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 :rofl:

Wow! Got some bling on those FOB's. Now just bedazzle them and you will be all set. :)

BaranE 05-09-2013 03:13 AM

Quote:

Originally Posted by rajeek (Post 7572808)
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 :rofl:

xkye77 07-07-2013 05:18 PM

Quote:

Originally Posted by KingTrack (Post 7570509)
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.

abbjax 07-09-2013 07:00 PM

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.


Sent from BimmerApp mobile app


All times are GMT -7. The time now is 01:52 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms