When I lock and alarm my Jaguar S-Type 2004 2.7 Sport Deisel a beeping alarm goes off after a while for no reason. It is not the horn and lights alarm, but a beeping alarm that goes off only if I unlock the vehicle. This is the only way I can stop it. I've checked windows,doors,boot and bonnet and they are all closed. I cannot activate this alarm by rocking car or other method... it seems to go on by itself every few minutes when switched off and rearmed.

check horn operation then in owners manual will have options on how to add or remove alert when locking vehicle Handbook Guides Owners Jaguar Learn about your car

double posted. wow.
when it beeped, did you look in the display (RPM)
it tells you why?? the VFD or EVIC tells you why.? (rpm dial)
do you park with the alarm on , on the street or a garage?????
if in a garage park and turn alarm off. it does turn off the alarm.
did you bump the panic button?
eg its under your pillow?? LOL or the cat chewed it?
read your other post, it's got lots of answer there.
to find cause.
if the horns stays off, if alarm is off then its not the horn button.

as many will say. there are 4 things that run the horn.
button horn
alarm
door locks.
panic.(part of alarm but not totally)
on my car, i have most themn turned off, like the lamp flashings.
and the horn chirp is off on all my cars, all i get is the door lock click sounds, nice (neighbor friendly)
so turn all all that and see if the horn still fails.

that panic button can fail,
if mind did id pull the fob battery and then use FOB 2.
to see of the FOB fails.

your other post said driving
this one says, parked. 3am clue.

Hi, some jags are fitted with dual alarms, is your alarm sounding through the main horns and flashing the lights? or are you getting a loud beeping noise.
If its beeping then its the Passive alarm system. you need to say what one it is, I am asumming its the original alrm and not aftermarket.

Sounds like you may have anouther problem, the horn should only 'peep' if you have left something open, like the boot (trunk), a rear door etc. In normal circustances the horn should not sound.

Its propably the door courtesy switch. Remove it, clean the wire and contacts and try that. Hope that helps

Hie kshep05,i'm having the same problem on my x type which i bought last week. it just started doing that yesterday and i am @ my wits end. Have you had a solution or diagnosis for your problem?

Check the battery as this can set the beeping noise off if the power is low.

yes.... my friend has a jag s type and he said the horn sounds when he locks the doors

Most likely your alarm system needs reset. When you use the button to turn the alarm on and off the horn beeps and lights flash. Horn beep when switch turned on, makes sense would be in the alarm system with all you've told.

try honking the horn normally with horn button <key must be on> if horn works it is in the programing for comfort and convieniance system if no honk it's just the horn or wiring to horn.