How to check the rear view mirror remote locking receiver

[Rob76]

Can lock the car all doors and boot ( 1.9 preface lift 1999 Z3) with the key. But not from the fob remotely. How can I check the RX in the mirror. I only have one key. Cant really find anything in the post to help.

 

[NZ00Z3]

Use INPA to look into the general module 4 (ZKE) to see if the the key buttons are working.

Get INPA here: https://www.bimmerforums.com/forum/...tions-Experiences-Discussions-Experimentation

 

[1.9GDE]

Can lock the car all doors and boot ( 1.9 preface lift 1999 Z3) with the key. But not from the fob remotely. How can I check the RX in the mirror. I only have one key. Cant really find anything in the post to help.

Have you checked all the fuses? I think there are 3 fuses for the central locking system, I had the same issue as you and resolved it by replacing 1 blown fuse

 

[Rob76]

Yes I checked all the fuses and the fob is transmitting an RF signal. Sounds complicated to check the RX in the mirror.

 

[NZ00Z3]

Sounds complicated to check the RX in the mirror.

Yes, working at the mirror it is complicated. But it's easy with INPA and looking into the ZKE. There is a page in INPA that shows you when each button is pushed, meaning that the mirror is receiving the signal and the ZKE is seeing the signal.

 

[Rob76]

Think I am going to have to bite the bullet and order the bits for to look at the signals. Sound like a job for my lad who is into modern computers. I am an old fashioned computer engineer whose expertise stopped in 1991 with the Ferranti Argus 700 used to fly the Bloodhound S.A.M.

 

[andyglym]

Think I am going to have to bite the bullet and order the bits for to look at the signals. Sound like a job for my lad who is into modern computers. I am an old fashioned computer engineer whose expertise stopped in 1991 with the Ferranti Argus 700 used to fly the Bloodhound S.A.M.

I feel your pain mate, I am to this type of Tek what Bryl Cream is to Kojak.

 

[the Nefyn cat]

old fashioned computer engineer

Bl**dy 'ell, when did that become a thing? When I were a lad..........