M reg Peugeot 306 - the bloody alarm

My wife has a 306 with the keypad style immobiliser on the centre console
in frontof the gearstick.

We went on holiday for a fortnight and, as usual, the battery was flat as
a pancake so when she tried the ignition the alarm went off. This has
happened before.

I got it jump started but now, whenever a door is opened the alarm goes
off and it is driving me nuts. I do not know the default code for the car
as we bought it second hand and have no docs. We did have a new security
unit fitted a year or so ago because after a repair we did not know the
code that had been punched into the old one. Anybody got any ideas on
what I need to do to sort it out?

 

i had a similiar problem with my 306 xsi the alarm was constantly arm there
for always going off.try taking the main fuse out of the fuse box the reset
it it cuts all the power to the alarm and clock so you will have to reset
the clock its in the middle of the fuse box looks a bit different from the
rest try that it worked for me.

i would say the keypad is nothing to do with the alarm it just immobilsers
the car not the alarm.
try it it cannot do any harm

 

the keypad is seperate
the fob switches off the alarm
does the fob work??
as for the keypad what code did you type in before ? cos it should still
work