07 Z4MC keyless entry problem

[robrwalker]

So I just bought my Z4MC (traded a z4 roadster) and I am kinda having some major problems with keyless entry being really janky.

Sometimes it works, sometimes it doesn't. Then it works great, then not at all and I have to insert the key. Issue is coming up with both keys.

What do u guys think? Could the key batteries be going dead? Reprogram the keys (which seems unlikely since it occasionally works)?

My previous z4 was definitely not great on keyless entry, but this seems way worse.

Thoughts appreciated.

[Beedub]

keyless entry?? you mean pressing the button on the key fob to open the central locking system?

anyhow the z4m charges its key whilst in the ignition, so your key should be nicely charged for opening and closing the door, try replacing the battery and see what happens ;-)

[MetMan]

Originally Posted by Beedub

keyless entry?? you mean pressing the button on the key fob to open the central locking system?

anyhow the z4m charges its key whilst in the ignition, so your key should be nicely charged for opening and closing the door, try replacing the battery and see what happens ;-)

I don't think the batteries in our keys are replaceable unless you actually cut the key open. There are a few forums describing this procedure in detail. You may want to try the following before replacing the battery:

http://forums.bimmerforums.com/forum....php?t=1114721

[robrwalker]

Originally Posted by Beedub

keyless entry?? you mean pressing the button on the key fob to open the central locking system?

anyhow the z4m charges its key whilst in the ignition, so your key should be nicely charged for opening and closing the door, try replacing the battery and see what happens ;-)

Yes - by keyless entry I mean not inserting the key to enter the car. That is pushing the button on the key. Correct.

I did not know or expect that the battery in our keys is rechargeable. That is quite surprising.

[robrwalker]

Originally Posted by MetMan

I don't think the batteries in our keys are replaceable unless you actually cut the key open. There are a few forums describing this procedure in detail. You may want to try the following before replacing the battery:

http://forums.bimmerforums.com/forum....php?t=1114721

Thanks MetMan - heading out of my office at lunch to try this.

Good tip and thank you.

[MPOWER78]

Originally Posted by MetMan

I don't think the batteries in our keys are replaceable unless you actually cut the key open. There are a few forums describing this procedure in detail. You may want to try the following before replacing the battery:

http://forums.bimmerforums.com/forum....php?t=1114721

I was having problems with my remote unlock and lock function , so i went to the link and did what they said and it work very easy. was go to the dealer for this but thanks to the great members on this forums it save me a trip

[SmartBastard]

Having the same problem with one of my keys, especially if I wanna open/close my windows with the remote. Will try the link later today and let you know...

[SmartBastard]

This one seems to have worked:

1. turn key to position 1 five times very quickly
2. remove key
3. Hold unlock button then press lock button 3 times, release unlock button. (The door locks should cycle to let you know it worked)
4. Repeat step 3 for other keys within 30 seconds to initialize them too.
5. turn on igntion to finalize

[MPOWER78]

^ thats the one that worked for me too ..

[gferil]

Wow I am going to try this later this week, one of the keys I got yesterday is hit or miss when it comes to unlocking the car

[Phishman]

One of my keys died about 2 days after I got my car. If you don't use them I think they die quicker.