alarm / central locking - no siren
My siren has not worked since i bought my car 2000 (b5)s4. if i trigger the alarm the hazzards will flash but no sound.
using my shareware VAG.com I have Software Coding: 13130 for the central locking. Does anyone know if this code has disabled the siren, if so i may by a VAG.com license and recode. If this code is ok does anyone have any suggestions where fault may be? :yes: cheers
cental locking /alarm codes (b5)
tried the new code, still no siren. Any more suggestions or does that look like a fault?:beee:
what's broke- siren, module or coding?
Today I took the 3 wires to the siren (from the central locking module) and whilst the siren was still connected, made a brake in the insulation, wired up a bulb to 2 wires, one to earth on the car and the other wire to be available to touch the wires for the siren to produce a simple circuit tester.
I found the following:
Red/ Blue wire – permanently live, whether alarm off, alarm armed ( not triggered) and alarm triggered and hazzards flashing.
Black/ yellow wire – permanently off, , whether alarm off, alarm armed or alarm triggered and hazzards flashing.
Brown wire – permanently off, I suspect this is a permanent earth?
I then took the siren off and connected direct to a 12v car battery.
Brown -to earth
I put a live to the black yellow terminal and got nothing.
I then kept Brown earthed and put a live to Red/Blue terminal and got a very quite crackle for about a second each time I made the connection.
I have not yet put a live feed to the brown terminal in case I damage a good siren – but have I got my assumption that this is earth correct?
Does anyone know what these wires are meant to do?
Is brown earth?
Should the central locking module be sending a signal along the black yellow wire to activate the siren?
What wires do I put a live and earth to on the siren , in order to make a (working)siren sound?
I still do not know if I should try any more codes via VAG-COM to module 35 , or if my central locking module is faulty (no signal to siren) or if it is my siren?
fault was the siren not the code
Tested the terminal and found half a volt!
Have now replaced with a second habd siren and all works.
Now I know it is not a coding matter will put a post on the B5 forum re fixing these sirens. As i did have a go at opening mine up and the batteries looked replacable - but my circuit board was spoilt by leaking acid from the battery.