strider needs advice

[mike stride]

Hi all don't know if am in the section I should be in but ! I need some advice on my 1998 z3 immobiliser
brick type fob I changed the battery in my fob , now the immobiliser won't work .I have done the procedure for Re-synchronisation as stated by Zroadster.org but still no joy! Can anyone help me .
Thank's all
Strider

 

[hard top]

Moved to Z3 Roadster & Coupe from Introduce Yourself.

 

[mike stride]

Just put new battery in my BMW Z3 1998 Brick type immobiliser fob .Now its not working
Have tried the Zroadster Technical Database suggestion but no luck any advice would be welcome
Thanks
Strider

 

[Grumps]

Does the red light on the brick light up when you press it to indicate power there? I know they get upset if there is a break in power due to a flat battery or brick battery change. If you didn't switch the battery within 10 seconds it will need to be reset. Sorry don't know how tho.

 

[GazHyde]

@jonco is normally the man when it comes to issues with the brick fob, although @Geoff Crispin is accruing knowledge daily too! I've tagged them in case they can drop by and offer advice.

 

[Geoff Crispin]

Sorry cant help at the moment as we have not yet tried to re programme the fob that I was given but the little that I know, there are better systems on other cars as never had a problem changing the battery.

 

[Shelly]

@t-tony helped with mine
Maybe he could help you if it's the same problem .........????

 

[Geoff Crispin]

Hi Shelly
What was your problem ?

 

[Shelly]

I really can't remember now
Something to do with my key fob

 

[mike stride]

Hi Grumpy Yes the red light comes on when I press any of the two buttons !
I will just keep searching for an answer thank's all for your comments

Strider

 

[jonco]

Welcome @mike stride sorry to hear you have a problem.
There appear to be mixed results on re-programming - when mine first failed I took it to a BMW specialist who successfully reprogrammed one fob but gave up on the second - reasons for failure never established. I then bought a new fob and not wishing to hand over another wad of cash programmed them myself . The article in the knowledge base was based on this experience and has worked for some but not others.

Another member @joepig found this information http://www.ow.no/archive/eba/50.PDF - there may be something in this which may help

I presume fob was working fine until battery change. As already asked - does the red led illuminate when button pressed? Did you get any response with the slider switch in the learn position?

Edit - sorry missed you last comment whilst typing.

 

[mike stride]

immobiliser fob was working fine before I changed the battery in it ,it appears I took to long to change the battery !! I didn't know there was a time limit to change it .I have been told I need to get to the control unit behind the glove compartment to re programme it . thank for all your help.

Strider

 

[jonco]

..............I have been told I need to get to the control unit behind the glove compartment to re programme ......

That's correct - here's how to do it https://zroadster.org/articles/3g-ews-remote-fob-programming.24/

 

[mike stride]

Thank's R4 RED As soon as the weather warms up ill be on it
Strider