Alarm/immobiliser

[Tomk]

Hi, so my fuel pump issues weren’t the fuel pump!

I’ve got an electrical fault somewhere, and think it’s alarm/immobiliser related.

after playing with the alarm (see attached) the car came back to life! OBD started working and fuel pump etc. guess this is a poor connection.

Can I get rid, disconnect the alarm? I guess it’s not that simple!

Is the immobiliser and alarm one of the same thing?

Any help greatly received.
Cheers

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[Tomk]

Ps when I disconnect the battery I get a very feeble alarm sound.

 

[Althulas]

Ps when I disconnect the battery I get a very feeble alarm sound.

That’s normal it’s the backup battery in the alarm, it can be silenced if you have the little key for it.

 

[Althulas]

Hi, so my fuel pump issues weren’t the fuel pump!

I’ve got an electrical fault somewhere, and think it’s alarm/immobiliser related.

after playing with the alarm (see attached) the car came back to life! OBD started working and fuel pump etc. guess this is a poor connection.

Can I get rid, disconnect the alarm? I guess it’s not that simple!

Is the immobiliser and alarm one of the same thing?

Any help greatly received.
Cheers

- YouTube

Enjoy the videos and music that you love, upload original content and share it all with friends, family and the world on YouTube.

youtube.com

Do you have the separate alarm fob to unlock or the key with the three buttons? Search on the forum for EWS to re sync.

 

[Kiwipom]

Hi, so my fuel pump issues weren’t the fuel pump!

I’ve got an electrical fault somewhere, and think it’s alarm/immobiliser related.

after playing with the alarm (see attached) the car came back to life! OBD started working and fuel pump etc. guess this is a poor connection.

Can I get rid, disconnect the alarm? I guess it’s not that simple!

Is the immobiliser and alarm one of the same thing?

Any help greatly received.
Cheers

- YouTube

Enjoy the videos and music that you love, upload original content and share it all with friends, family and the world on YouTube.

youtube.com

I am pretty certain all the Z3s have an oem immobilisor based on a computer chip in the key, no chip present near the lock and the ecu will not allow the engine to start.

I am not sure if the z3 could have an oem alarm AS WELL AS an immobilisor. An alarm would add security by sounding a siren if (for example) a door was opened whilst the alarm was active.

My 2000 2.8 had an aftermarket alarm fitted when I bought it, one of the first jobs I did was to uninstall it. I dont trust aftermarket alarms especially one that is 20 years old, but removal was not a job for the faint hearted. The aftermarket alarm was activated by a separate fob presumably using a RF transmitter, and was wired into the central locking system, rendering the buttons on the oem key superfluous.

Considering the car was quite new when the alarm was fitted the crude hacking into the oem harness was almost criminal. The thick wires leading into the ignition lock were crudely cut, and relatively thin wires were soldered to the two ends, wrapped in tape, and the thin wires were run back to a “black box” which was basically a box of relays activated by the fob. There were various sensors to detect movement in the cabin, movement of the car, and glass breaking etc these also had relays In the box.

All alarm wires were black, which apparently is to deter attempts to disarm it.

This may help you identify what you have, but might not!