BMW z4 key not working tried everything
- Thread starter BMW Z4 2.5I SE 2004
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BMW Z4 2.5I SE 2004
Member
[ref]Haro[/ref],
So if i he fitted the gm5 and codded it which he said he did anyway what else could it be? Why after he fitted the GM5 module did the key pair with car and work when door was open? Also if anyone can figure out how i can get my key back to unlocking atleast the roof again at this point I'd be very happy considering
So if i he fitted the gm5 and codded it which he said he did anyway what else could it be? Why after he fitted the GM5 module did the key pair with car and work when door was open? Also if anyone can figure out how i can get my key back to unlocking atleast the roof again at this point I'd be very happy considering
BMW Z4 2.5I SE 2004
Member
Thanks [ref]enuff_zed[/ref], fingers crossed someone figures this one out. They'd have to be the best on here.
I'd suggest the best starting point is to get someone knowledgeable who can help out with the coding etc first.BMW Z4 2.5I SE 2004 said:
Many members have Carly, INPA etc and are practiced with them. Start there and see what it throws up.
A simple 'help I'm in .....(location)....please come and help' may turn up something.
I think it may help if you could sit down and write a list of exactly what happened, symptoms etc, what you did next, what results you got.
It's gone a long way down the line now and starting to get a little confused.
BMW Z4 2.5I SE 2004
Member
Ok, first love you all. You amazing people.
So 1 year ago my car key fob (main key) stopped unlocking and locking the passenger and driver side doors and my Central locking stopped working also. But still opened the boot from key fob and internal button for boot. Several months passed and eventually the boot didn't work from key fob. I tried getting a computer on it but nothing showing. I got a new £175 key from bmw cut and but wouldn't pair with car. I dont think the boot opened either defo not unlocking car etc. Then i had someone replace and code the GM5 module to car. Atleast as far as i am aware they did. But i trust the person. At this point he said to me that the key still doesn't work and that the key is dead (as he was holding the main key not the second one i bought brand new) i then replied with here you go brand new key right here. He put the key in the car and turned the key to turn car emgine on and off then i think done the key pair thing. All of a sudden the doors locked then unlocked to my amazement. He then proceeded to close the door as it was opened and the key fob no longer worked. So he opened it again and it worked. It worked untill fully closed door or just about closed. To which he explained it must be a wiring fault at the loom. (The wires that leave the door) I would need an auto electric. There is no breaks in the wiring at the loom or corrosion. So unless somehow the problem is inside the door card where it connects to something or? And this is where i last left off. Colb advised me to try pairing that second brand new to the car to see if it would work. However unfortunately what I did. It no longer operates at all meaning after attempting to pair it. It doesn't drop the roof or open the boot anymore or turn the light on at rear view mirror which was working after the GM5 was fitted with that guy as i asked him to code it. He didn't use carly he used ncs expert i think.
That is the story from top to bottom.
So 1 year ago my car key fob (main key) stopped unlocking and locking the passenger and driver side doors and my Central locking stopped working also. But still opened the boot from key fob and internal button for boot. Several months passed and eventually the boot didn't work from key fob. I tried getting a computer on it but nothing showing. I got a new £175 key from bmw cut and but wouldn't pair with car. I dont think the boot opened either defo not unlocking car etc. Then i had someone replace and code the GM5 module to car. Atleast as far as i am aware they did. But i trust the person. At this point he said to me that the key still doesn't work and that the key is dead (as he was holding the main key not the second one i bought brand new) i then replied with here you go brand new key right here. He put the key in the car and turned the key to turn car emgine on and off then i think done the key pair thing. All of a sudden the doors locked then unlocked to my amazement. He then proceeded to close the door as it was opened and the key fob no longer worked. So he opened it again and it worked. It worked untill fully closed door or just about closed. To which he explained it must be a wiring fault at the loom. (The wires that leave the door) I would need an auto electric. There is no breaks in the wiring at the loom or corrosion. So unless somehow the problem is inside the door card where it connects to something or? And this is where i last left off. Colb advised me to try pairing that second brand new to the car to see if it would work. However unfortunately what I did. It no longer operates at all meaning after attempting to pair it. It doesn't drop the roof or open the boot anymore or turn the light on at rear view mirror which was working after the GM5 was fitted with that guy as i asked him to code it. He didn't use carly he used ncs expert i think.
That is the story from top to bottom.
BMW Z4 2.5I SE 2004 said:
As I have said, NCS will not pair the module. It will code functions but not pair it with the dme. If it's a second hand unit it will retain the old coding and some functions may work, but not the locking.
Here's a post I've found of of exactly how to recode the unit with videos rather than explain it all,
When you install the new one, the car will start but it needs programming. Also the remote locking will not work now.
This shaky video gives you an idea of the programming method using SSS progrman
https://www.youtube.com/watch?v=L4qfRK2RJ-8
After programming you need to re sync your keys by this method
https://www.bmwgm5.com/Key_Recode.htm
I then used Carly to code the module with my preferences etc.
BMW Z4 2.5I SE 2004
Member
Sorry [ref]enuff_zed[/ref], i edited the story to fit that inn now
BMW Z4 2.5I SE 2004
Member
Thanks
[/quote][ref]Haro[/ref],
The thing is he definitely programmed the GM5
Because why would it have worked initially when the door was opened otherwise?
[/quote][ref]Haro[/ref],
The thing is he definitely programmed the GM5
Because why would it have worked initially when the door was opened otherwise?
BMW Z4 2.5I SE 2004
Member
So 1 year ago my car key fob (main key) stopped unlocking and locking the passenger and driver side doors and my Central locking stopped working also. But still opened the boot from key fob and internal button for boot worked. Several months passed and eventually the boot didn't work from key fob. I tried getting a computer on it but nothing showing. I got a new £175 key from bmw cut and but wouldn't pair with car. I dont think the boot opened either defo not unlocking car etc. Then i had someone replace and code the GM5 module to car. Atleast as far as i am aware they did. But i trust the person. At this point he said to me that the key still doesn't work and that the key is dead (as he was holding the main key not the second one i bought brand new) i then replied with here you go brand new key right here. He put the key in the car and turned the key to turn the car engine on and off then i think done the key pair thing. ALL OF A SUDDEN THE DOORS LOCKED AND UNLOCKED TO MY AMAZEMENT. He then proceeded to close the door as the door was opened at the time and not closed over and the key fob no longer worked. So he opened the door out the way again tried the fob and it worked. It worked untill the door is fully closed door or just about closed. To which he explained it must be a wiring fault at the loom. (The wires that leave the door) I would need an auto electric. There is no breaks in the wiring at the loom or corrosion. So unless somehow the problem is inside the door card where it connects to something?
this is where i last left off. However Colb advised me to try pairing that second brand new key to the car to see if it would work. unfortunately whatever I did. It no longer operates at all meaning after attempting to pair it. It doesn't drop the roof or open the boot anymore or turn the light on at rear view mirror which was working after the GM5 was fitted with that guy as i asked him to make the roof drop from Key fob. He didn't use carly. I don't know what he used but it something better to program the car to drop the softtop from key fob. As far as what he used to program the gm5 or anything related we didn't discuss.
Hey guys there i have highlighted more and also put in capitals ahha just so everyone can see that im saying it temporally worked after Gm5 fitment.
this is where i last left off. However Colb advised me to try pairing that second brand new key to the car to see if it would work. unfortunately whatever I did. It no longer operates at all meaning after attempting to pair it. It doesn't drop the roof or open the boot anymore or turn the light on at rear view mirror which was working after the GM5 was fitted with that guy as i asked him to make the roof drop from Key fob. He didn't use carly. I don't know what he used but it something better to program the car to drop the softtop from key fob. As far as what he used to program the gm5 or anything related we didn't discuss.
Hey guys there i have highlighted more and also put in capitals ahha just so everyone can see that im saying it temporally worked after Gm5 fitment.
If the GM5 is coded correctly and all worked well at one point until the door was nearly closed, then surely there must be a break in the door wiring somewhere. You may not be able to see the broken wire as it may still be covered with the insulation, or it may be just out of view.
Regarding pairing the key, keep on trying - attempt after attempt with the methods given by colb. I bet at some point it works. (And keep charging the keys as you may have flattened the battery with all the use).
Regarding pairing the key, keep on trying - attempt after attempt with the methods given by colb. I bet at some point it works. (And keep charging the keys as you may have flattened the battery with all the use).
Keys are the most frustrating thing to deal with on the Z4 as you have found out.
As long as the GM5 module was coded to the car and the fact the locking worked at first would seem to support that it was coded to the car. I did note that you mention the door being open when the syncing of the keys was carried out, this is a definate No No, when syncing keys you must sit in the drivers seat with the door closed. When in that position the three syncing methods should be tried if one dosn't do it try the other two methods. You must adhere to the instructions in particular the number of turns of the ignition key before withdrawing and doing the button dance depending on which method you are doing.
At least you have keys that will start the engine, just scanned another members car this morning as he has a non cranking key and a good key. The non cranking key has working locking unlocking on the buttons so that is synced to the car as is his other key. Scanned the duff key with an AK90+ key coder and that wouldn't find the key at all, his good key when scanned was found straight away. Had a closer look at the live data of the duff key using BMW Scanner 1.4 diagnostics on the laptop, that showed that the key was not identified and had wrong fixed and rolling codes. It would seem that the transponder chip in the fob has scrambled itself. His options are get a new key from BMW or go down the road of using one of the independant key refurbishers, snag is they will probably require the EWS module sent to them which is a bit risky with the post.
None of the other members problem has any bearing on yours but thought you would be interested to see what happens with the other part of the key system decides to play up.
Give the syncing methods another go with the door definitely closed, see if that makes any difference.
As long as the GM5 module was coded to the car and the fact the locking worked at first would seem to support that it was coded to the car. I did note that you mention the door being open when the syncing of the keys was carried out, this is a definate No No, when syncing keys you must sit in the drivers seat with the door closed. When in that position the three syncing methods should be tried if one dosn't do it try the other two methods. You must adhere to the instructions in particular the number of turns of the ignition key before withdrawing and doing the button dance depending on which method you are doing.
At least you have keys that will start the engine, just scanned another members car this morning as he has a non cranking key and a good key. The non cranking key has working locking unlocking on the buttons so that is synced to the car as is his other key. Scanned the duff key with an AK90+ key coder and that wouldn't find the key at all, his good key when scanned was found straight away. Had a closer look at the live data of the duff key using BMW Scanner 1.4 diagnostics on the laptop, that showed that the key was not identified and had wrong fixed and rolling codes. It would seem that the transponder chip in the fob has scrambled itself. His options are get a new key from BMW or go down the road of using one of the independant key refurbishers, snag is they will probably require the EWS module sent to them which is a bit risky with the post.
None of the other members problem has any bearing on yours but thought you would be interested to see what happens with the other part of the key system decides to play up.
Give the syncing methods another go with the door definitely closed, see if that makes any difference.
BMW Z4 2.5I SE 2004
Member
I have tried again guys to no avail i really appreciate your kind efforts and words. There is one thing. Does anyone know were i can find the wiring diagram for my car to see which wire is responsible for the unlocking in drivers somewhere in that door card it must connect to something that is maybe loose or not connected up right.
BMW Z4 2.5I SE 2004
Member
Hey guys yes so the key should be charged was working the softtop and roof and boot untill 2 days ago when i tried to pair the key to car then reset the thing meaning i bet its already paired to car and i just un done that or something so even boot doesn't work or softop :roll: . Yeah it was the door was opened but ive tried pairing keys again this way and nothing. Here is the thing with the main key. The battery is dead its the second key i am using in terms of pairing etc. Does that make any difference. I've not been doing anything with main key as its battery is done. Also yes inpa plugged in might help! Wish i knew which wire is for the unlocking on door that way it makes things easier.
BMW Z4 2.5I SE 2004
Member
perfect thanks [ref]BumpyZ4[/ref], i have no idea about wiring or wiring diagrams but that looks like it! Now i atleast have something to show an auto electric! I seen a auto electric a year ago for something unrelated to this. Charged me 80 quid and all he done was fiddle with the wires and sip his coffee and fixed nothing ahah so i need to find someone who wants to fix it too
