I own a 2008 Jaguar XKR 4.2, and recently, the car alarm has been going off at random times. This issue has been quite disruptive and frustrating. Here are the specific details

Symptom: The car alarm activates randomly without any apparent reason.
Battery Status: The car battery is fully charged and has been tested by an electrician, confirming it is in good condition.
Diagnosis: The electrician suggested that the problem lies within a backup alarm located under the bonnet on the driver's side. This backup alarm is situated beneath a BDS Actuator.
I am looking for advice on how to remove the backup alarm or any guidance on troubleshooting this issue further. Additionally, if anyone has access to a workshop manual or can provide detailed steps on how to access and remove the backup alarm, it would be greatly appreciated.
Any assistance or pointers in the right direction would be incredibly helpful in resolving this issue.

Kind regards

Mark

 

This thread gives the best (that I found) description of the replacement steps for the alarm (also called a ‘sounder’ in many threads):

Sounder replacement