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Hi Scott, If the alarm is an after sales unit it has a knock sensor fitted which has an adjustable sensitivity. ask your dealer where it has been installed and then lower the adjustment. Regards John
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There are a few possible reasons why your car might be producing a very loud, continuous sound that can only be stopped by disconnecting the battery. Some potential causes include:
1. A faulty starter motor: If the starter motor is faulty, it can cause a loud grinding or buzzing noise when attempting to start the car.
2. A malfunctioning alternator: If the alternator is not functioning properly, it can cause a loud whining or grinding noise.
3. A stuck fan belt: If the fan belt is stuck or has become worn and is slipping, it can cause a loud squealing noise.
4. A stuck horn: If the horn is stuck, it can cause a loud, continuous honking sound.
To determine the cause of the loud noise, it is recommended to have the car checked by a professional mechanic. They will be able to diagnose the issue and suggest the appropriate repairs. In the meantime, to stop the noise, you can try disconnecting the battery as a temporary solution. However, it is important to identify and fix the root cause of the issue to avoid further damage to the car.
Is it a factory security alarm or aftermarket? Are you disarming the alarm using the fob? What happens when you try to start the Jimmy after disarming the alarm - do you get only a flashing "Security" or "Theft" light, or do you just hear a loud click noise?
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.
does it come from inside the cabin might be a fault with the seats or seat belts as when you get in and dont put your seat belt on it makes a beeping noise untill the seat belt gets put on is it this noise could be a faulty seat sensor wouldent of thought it was the turbo hissing or screeming yes but not a buzzing noise but then i could be wrong hope this helps ivan
Have your battery checked for shorts. Mine was defective on a new Lincoln. Same problem. Even sat in it at 18 degrees one night to appease neighbors whom my alarm woke up.
Check connections at every possible point if the battery tests good.
Get up 30 minutes before alarm usually goes off and see if neighbor has loud car or slams his car door. Motion sensors can set it off too.
The steering wheel horn pad/button doesn't have enough clearance. In very cold weather, the contacts touch, sounding the horn. Replace or repair the horn pad
two ways to do it if you have the owners maunual you can adjust the sensitivity with the remote and a certain sequance of key taps if u dont have that go under the hood and un hook the ground wire the sound will stop on the alarm siren still be able to use the key pad it just wont be loud and annoying any more
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