XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

The alarm goes randomly off

Thread Tools
 
Search this Thread
 
Old Jul 5, 2021 | 06:21 AM
  #1  
jean HJ's Avatar
Thread Starter
|
Member
Joined: Feb 2020
Posts: 41
Likes: 0
From: Bedfordshire
Default The alarm goes randomly off

Hello
I'm annoyed the alarm goes off randomly,but everything get closed properly and I see nothing at dash that something is open.could it be that the bonnet alarm switch is though defect?
Many thanks jean
 
Reply
Old Jul 5, 2021 | 09:02 AM
  #2  
motorcarman's Avatar
Joined: Dec 2009
Posts: 13,699
Likes: 9,645
From: Wise County,TX
Default

There is a feature in one of the modules that has logged the LAST SECURITY ACTIVATION, (or some similar wording)

I don't know how SDD will list it or find it but WDS and IDS have this capability in the setup and configuration tab.
 
Reply
Old Jul 5, 2021 | 05:25 PM
  #3  
meirion1's Avatar
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Nov 2009
Posts: 3,145
Likes: 804
From: The beautiful Mornington Peninsula in OZ
Default

It is usually the bonnet switch below one of the bonnet catches-the one with an electrical wire leading to it.
 
Reply
Old Jul 6, 2021 | 10:24 AM
  #4  
wfooshee's Avatar
Senior Member
5 Year Member
Liked
Joined: Dec 2020
Posts: 903
Likes: 352
From: Panama City, FL
Default

Just cut the wires off of that switch and tie them together. The switch fails and sends false "bonnet open" to the alarm system. I was fortunate enough for it to happen once while driving, saw the "Bonnet open" message in the display, when it obviously wasn't open.
 
Reply
Old Jul 7, 2021 | 12:49 PM
  #5  
Wingrider's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2016
Posts: 3,481
Likes: 879
From: Stow Ohio
Default

A single paper clip fixed both of mine, simply by inserting into the connector
 
Reply
Old Jul 8, 2021 | 02:27 AM
  #6  
Jason.'s Avatar
Member
Joined: Apr 2021
Posts: 76
Likes: 37
From: New Zealand
Default

Originally Posted by Wingrider
A single paper clip fixed both of mine, simply by inserting into the connector
I think a good quality paperclip is rated at about 10amps and If that's no good...


The alarm goes randomly off-hjqfzzh.jpg
 
Reply
Old Jul 8, 2021 | 10:14 PM
  #7  
ChrisMills's Avatar
Senior Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2018
Posts: 943
Likes: 292
From: Auckland, New Zealand
Default

Seriously though, our friend has had this intermittent problem since May still unfixed.
Bonnet Open gives me a Bonnet Open message. (unless he has a Hood)
Besides, how likely is that to go off intermittently when the car is doing nothing?
He's also had flat battery and other electric issues at some stage, so the state of his maintenance is uncertain.
 
Reply
Old Jul 9, 2021 | 08:30 AM
  #8  
wfooshee's Avatar
Senior Member
5 Year Member
Liked
Joined: Dec 2020
Posts: 903
Likes: 352
From: Panama City, FL
Default

It.

Is.

The.

Switch.

Under.

One.

Of.

The.

Bonnet.

Latches.

Cut the wires and tie them together to permanently ground that signal. The car will be unable to detect that the bonnet has been opened, but the alarm will stop going off whenever it freels like it.

The switch gets corrosion, meaning it sometimes opens when it really isn't open, no connection to ground (earth for Brits,) falsely reporting the open bonnet to the car.
 
Reply
Old Jul 9, 2021 | 08:46 AM
  #9  
Wingrider's Avatar
Veteran Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2016
Posts: 3,481
Likes: 879
From: Stow Ohio
Default

I think a good quality paperclip is rated at about 10amps and If that's no good...

Understand what you posted Jason, & usually do not short things out in this way!!!
It is a switch, and not a fuse after all, so no harm done if there is an electrical issue!!!
Switch is a little more expensive than a paper clip after all.
And i don't really require the switch to work
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Eldorado98
General Tech Help
0
Aug 5, 2020 02:13 PM
Backup
S-Type / S type R Supercharged V8 ( X200 )
1
Dec 3, 2018 08:36 AM
hawesr14
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
0
Nov 29, 2015 03:38 PM
abwoon
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
4
Sep 5, 2009 12:54 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 04:18 PM.