Remote key locking won't work

[Casa de Mesa]

Looks like this:

[sapote]

So, I've since replaced the broken pieces in the lock and fixed it. Key locks and unlocks the door and will also lock the passenger door. Key fob still a no-go.

Next idea is it's the RF antenna in the c-pillar or the gm5 module - any idea which one we think it might be more? I'm leaning towards the RF antenna. Is it underneath the sharkfin under the headliner?

Continue to use the key lock for lock/unlock will break it again. The lock design was intended to be controlled by the key fob.
I don't think your issue is the GM5, but the RF antenna wiring.

[TropicalM3]

On the output side of the RF Antenna(the wires that lead to the GM5), there is a wire that will give a signal when you press a button on the key, I don't remember which one of the wires. My key wouldn't work for years until I tested that wire and found that a signal was going to the car, then I realised the issue was with the car, ended up being a blown fuse. Just use a test light, it will be a dull light bcse I think it is a 5v signal.

[bmwfnatic]

Looks like this:

Don’t want to hijack this thread. But this has me wondering, my current M3 I need to be within about 10ft for the remote to work, I could’ve sworn with my previous one I could be 10 times further away and it would still work. What could that be?

[Casa de Mesa]

An old battery in the key fob that's failing could do it.

[CybrSlydr]

How much was a new new key if you don't mind? I am in the same situation.

It was $250

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