How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Mike Your Own Question

Mike
Mike, Jaguar Technician
Category: Jaguar
Satisfied Customers: 39198
Experience:  Tech Expert
9261905
Type Your Jaguar Question Here...
Mike is online now

I have a 1999 XK8 and am having problems with the alarm. It

Customer Question

I have a 1999 XK8 and am having problems with the alarm. It keeps going off during the night so I am having to leave the car unlocked so as not to disturb my neighbours. I don't seem to have many problems with it during the day and the battery is okay so I know that's not the problem. This problem started a week past Monday when it was raining all day long and the alarm went off several times. It was okay during that night and from then on it is fine during the day come rain or shine but goes off around 2.30am. Can you help?
Submitted: 1 year ago.
Category: Jaguar
Expert:  Mike replied 1 year ago.
Hello and Welcome - My name is ***** ***** happy to help / advise.These always for some reason unknown, tend to go off in the night! The problem is usually down to a faulty or out of position bonnet switch - when the bonnet is closed, it closes the switch - but when they are faulty, it doesn't operate correctly.. and then the system thinks the bonnet is being opened -and hence sets the alarm off.So thats the first thing to check - you can just disconnect the switch - the wire from it - to stop it happening..or for test purposes even.Other known issues that will cause this is if the boot area light is staying on unbeknown to you - again, a switch issue.. and sometimes too the same with the glove box.. and / or under bonnet light, if fitted.The easiest way to check if its one of the lights as above , is to remove the bulbs for a 24 hr period -it it then stops, replace one at a time to narrow it down...till you find it, by way of the alarm sounding again. Again, its a switch issue again there.The other way to diagnose it is to have a plug in daignostic test done - that will quickly find the fault as the system logs fault codes - but to be honest if you work through as above, starting with the bonnet switch check, you will usually find and cure the fault.On occasion it can be one of the "door ajar" switches causing it too - but work through as above to get to the bottom of it.Let me know how you go..and / or let me know if you need anything further on this..~~~>>>>>>~ Meanwhile - Please do click on the "Exc / Ok rating" for me at this time.. Thank you in advance for that . ..Note that you can get back to me anytime at all after doing the rating - it doesn't close you out -- Best Rgds, MIKE.

What Customers are Saying:

 
 
 
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
 
 
 

Meet The Experts:

 
 
 
  • Matt

    Matt

    Mechanical Engineer

    Satisfied Customers:

    132
    BEng hons Mech engineering, in auto industry 22 years
< Last | Next >
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Mechanical Engineer

    Satisfied Customers:

    132
    BEng hons Mech engineering, in auto industry 22 years
  • http://ww2.justanswer.com/uploads/IN/indytech/2013-8-8_102717_SantoDomingo146598x6402.64x64.jpg Greg's Avatar

    Greg

    Technician

    Satisfied Customers:

    1080
    Automotive diagnostic tech
  • http://ww2.justanswer.com/uploads/TE/techmachine/0601821347169_717372168_8940977_39623330_o.64x64.jpg Ross's Avatar

    Ross

    Diagnostic and repair technician

    Satisfied Customers:

    453
    Licensed diagnostic and repair technician
  • http://ww2.justanswer.com/uploads/RO/RobMechanic/068.64x64.JPG Rob's Avatar

    Rob

    ASE Certified Technician

    Satisfied Customers:

    82
    30 years trade experience
  • http://ww2.justanswer.com/uploads/UK/ukiaibal/2012-11-9_205920_SAM0109.64x64.JPG uk_iaibal's Avatar

    uk_iaibal

    UK Car Mechanic

    Satisfied Customers:

    1
    Verified Car Mechanic.
  • http://ww2.justanswer.com/uploads/NA/nabilc/nabilc_avatar.64x64.jpg Billy's Avatar

    Billy

    Trainer/ Master Technician

    Satisfied Customers:

    38
    Trainer 8+ years, master tech. 10+ years, SAE member