Jrod 7 Posted December 8, 2009 Recently my 405 alarm has started going off at random times for no reason. Sometimes it will go a few times before giving up. I've got round this by locking it with the key but wondered if there was a likely cause or a way to disable the alarm so I can still lock it with the remote. Share this post Link to post Share on other sites
KRISKARRERA 2 1 Cars Posted December 8, 2009 I might be wrong but I think my dad had a similar problem when we had a late phase 2 405 GTX and there was some sort of switch or something in the nearside of the front of the engine bay that you could turn the alarm off with. Share this post Link to post Share on other sites
Jrod 7 Posted December 8, 2009 I was told something similar but can't see anything obvious, if anyone has any idea where it is.... Share this post Link to post Share on other sites
Miles 331 1 Cars Posted December 8, 2009 Not always fitted, I found the same thing on my old Lemans, It was in the handbook but not the car Just unplug it, If it's like the 306 one it doesn't do much and is not part of the engine system Share this post Link to post Share on other sites
Jrod 7 Posted December 8, 2009 Where abouts do you unplug it from? Share this post Link to post Share on other sites
kyepan 291 Posted December 8, 2009 also check to see if the random switch is off. Share this post Link to post Share on other sites
welshpug 1,737 Posted December 8, 2009 Random switch? To disable the alarm you need to unplug the control box, unfortunately that disables the remote central locking. Share this post Link to post Share on other sites
Jrod 7 Posted December 8, 2009 To disable the alarm you need to unplug the control box, unfortunately that disables the remote central locking. Which is what I didn't really want to do. At the moment I lock it with the key but double tap the key fob so can still unlock it... Share this post Link to post Share on other sites
mr_exe 1 Posted December 8, 2009 If its anything like the 306 alarm (and as bad ) then disconnecting the interior sensors seems to stop them going off. Share this post Link to post Share on other sites
Tom Fenton 1,650 Posted December 8, 2009 Put sellotape over the interior sensors and see if that helps.... Share this post Link to post Share on other sites
kyepan 291 Posted December 8, 2009 Random switch? To disable the alarm you need to unplug the control box, unfortunately that disables the remote central locking. sorry that was an unhelpful and completely flippant remark... i should have added a smiley or something. Share this post Link to post Share on other sites
