[Jerez418]

This morning I tried to unlock my car and noticed when I pressed the unlocked button on my fob nothing happened (not even a sound) so I tried locking and still nothing happened. I went up to the car and realized it was unlocked (thankfully) and i inserted the fob and started up the engine. As soon as I got to where I needed to be. I tried locking my car but nothing happened. Is this is a key fob battery issue? Does my fob need to be programmed again? It's able to start the car it just doesn't seem to unlock/lock now. Can anyone help?

[sdbmwcoding]

Change the batteries if it's a comfort access key. That should fix it

[Jerez418]

Unfortunately I don't have comfort access. But you think they battery could be the problem?

[ValveslapAdjustment]

Originally Posted by Jerez418

Unfortunately I don't have comfort access. But you think they battery could be the problem?

It could be, especially if you don't use the fob very often. It's rechargeable and charges when the fob is in the start slot in the dash. Took me a while to charge one of mine from dead.

[Jerez418]

Originally Posted by ValveslapAdjustment

It could be, especially if you don't use the fob very often. It's rechargeable and charges when the fob is in the start slot in the dash. Took me a while to charge one of mine from dead.

It's my main fob, and I'm always using it. About how long did it take you to charge one from dead?

[ValveslapAdjustment]

Originally Posted by Jerez418

It's my main fob, and I'm always using it. About how long did it take you to charge one from dead?

Honestly, a couple weeks of sporadic driving and a couple of 4 hour trips. Now I alternate keys every time I drive.

If you live in a safe neighborhood, you could connect a battery tender to the car and leave your key in the dash with the accessories on overnight and it should charge the battery in the fob. Or someone could steal your car lol.

[Jerez418]

Originally Posted by ValveslapAdjustment

Honestly, a couple weeks of sporadic driving and a couple of 4 hour trips. Now I alternate keys every time I drive.

If you live in a safe neighborhood, you could connect a battery tender to the car and leave your key in the dash with the accessories on overnight and it should charge the battery in the fob. Or someone could steal your car lol.

When I bought the car I was only given the one key fob. and it's strange because I use it every day. Although a couple months prior I would get the "battery" icon on my dash I guess it was indicating that it was low. And I live in a town home so I wouldn't trust leaving my car over night. I even checked the diversity antenna fuse and it seemed to be good still. I think it will be my battery. I just need to find someone who could solder a new one for me. Or do it myself. Once I open the casing do I need to get a new one?

[ValveslapAdjustment]

Originally Posted by Jerez418

When I bought the car I was only given the one key fob. and it's strange because I use it every day. Although a couple months prior I would get the "battery" icon on my dash I guess it was indicating that it was low. And I live in a town home so I wouldn't trust leaving my car over night. I even checked the diversity antenna fuse and it seemed to be good still. I think it will be my battery. I just need to find someone who could solder a new one for me. Or do it myself. Once I open the casing do I need to get a new one?

I would just buy a new fob from the stealer if it were me.

[Jerez418]

Originally Posted by ValveslapAdjustment

I would just buy a new fob from the stealer if it were me.

how much would the charge?

[charlie_m]

Originally Posted by Jerez418

how much would the charge?

I just bought one from bimmer-tech.net, $300. If you need an internal mechanical key blade as well, it's another $65. Note you have to send them proof-of-ownership before they will ship it to you.

[Jerez418]

Originally Posted by charlie_m

I just bought one from bimmer-tech.net, $300. If you need an internal mechanical key blade as well, it's another $65. Note you have to send them proof-of-ownership before they will ship it to you.

Originally Posted by charlie_m

I just bought one from bimmer-tech.net, $300. If you need an internal mechanical key blade as well, it's another $65. Note you have to send them proof-of-ownership before they will ship it to you.

$300? Is it even worth it? I think I'll try replacing the battery itself first by having someone solder it. and it doesn't work out then I guess I'll have to call the big dogs and give them all my money

[charlie_m]

Originally Posted by Jerez418

$300? Is it even worth it?

That's your call, I'm just trying to answer your question. It was worth it to me to have a spare key.

[ctuna]

You can charge the non comfort access key out of the car with
a toothbrush or cell phone wireless charger.

[Jerez418]

I have a charging pad but when I place the key fob on it nothing happens and the pad doesn't turn on, when placing my phone on it the light indicates it's on the pad. I don't think the fob is strong enough to start up the pad to begin charging it

[Jerez418]

Actually to trigger the pad to turn on, I placed an earphone case beside the fob and placed them both on the pad. The light is on meaning it's charging both devices (or just the headphone case haha) but I'll give it some time and see what happens.