Standard Toyota Alarm ?

[ddave]

I've got a problem with a standard factory fitted Toyota alarm system (vehicle security system TVSS IIIB). When armed, or disarmed, it will beep 16 times ?? If I open the door/boot while armed the system activates but the siren does not sound.

Any ideas what the 16 beeps are trying to tell me?

Also, not sure where the siren is actually located.

[ddave]

Car was in for a service so got toyota to check it. They advise a faulty Siren which needs to be replaced.

[mytoyjames]

The reason for this is:
The 16 beeps means that the siren back-up battery (built into the siren box) is not charging enough anymore because of age or water ingress (usually age). It beeps 16 times when the voltage from the backup battery is less than a certain voltage level. This is to notify you to replace the siren box. It is held in with 2 screws and has 2 wires coming out of it with a plug connector for connection to the wire to the alarm ECU, so it's easy to replace. The TVSS IIIB siren is currently £49.76 (incl VAT) from Toyota dealers.

[jzw]

I have a similar problem with my Carola (5 dr, V reg). Could you please tell me where I can find the siren box? Many thanks.

The reason for this is:
The 16 beeps means that the siren back-up battery (built into the siren box) is not charging enough anymore because of age or water ingress (usually age). It beeps 16 times when the voltage from the backup battery is less than a certain voltage level. This is to notify you to replace the siren box. It is held in with 2 screws and has 2 wires coming out of it with a plug connector for connection to the wire to the alarm ECU, so it's easy to replace. The TVSS IIIB siren is currently £49.76 (incl VAT) from Toyota dealers.

[P11SCL]

i have an alarm sire for sale in the for sale section