156 JTD alarm going off when key turned to mar
Hello all, My 156 went to get a cat bypass system made up. When doing some welding they disconnected the battery and the alarm went off. Now at this point I never knew the car had an alarm fitted as the indicators do not flash when the car is opened or locked and the alarm does not beep or sound. It has also never gone off before.
Now when the car electrics are turned on before turning over the engine, the alarm sounds for about 30 seconds or so and the indicators flash. But still when the car is locked or opened they do not flash. The engine can be started and the key fob can be used to open the doors and lock them. The alarm will not sound when the doors are opened. Only when the electrics are switched on. Is there a need to reset the alarm to the key or even to set it into a permanent disabled mode? Although seeing as there is an alarm fitted I would ideally liked to have it in a normal operation.
I have seen online a post saying press and hold the door lock button for 80 seconds to disable the alarm but this did not work. I also seen ones saying press and hold for 4 seconds to turn off the alarm before turning the key to mar. But it does not seem to respond to the key fob at all. The light on the dash just stays flashing every second or there about's.
Anyone have any thoughts?
Car spec: 03 pre face lift 156 1.9JTD 8v