How to check the rear view mirror remote locking receiver

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Rob76

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Jul 27, 2023
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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.
 
Rob76 said:
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.
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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 :)
 
Yes I checked all the fuses and the fob is transmitting an RF signal. Sounds complicated to check the RX in the mirror.
 
Rob76 said:
Sounds complicated to check the RX in the mirror.
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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.
 
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.
 

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Rob76 said:
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.
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I feel your pain mate, I am to this type of Tek what Bryl Cream is to Kojak. :arghh:
 
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