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D4 sounding the alarm when unlocking the car?
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PeteHse
 


Member Since: 13 Sep 2015
Location: Lincolnshire
Posts: 202

England 2011 Discovery 4 3.0 SDV6 HSE Auto Indus SilverDiscovery 4
D4 sounding the alarm when unlocking the car?

Any ideas why it would suddenly start doing this?

Car is locked by the handle and when another handle is grabbed to open it sounds the alarm?

No door open warnings etc and no low battery warning when starting the car.

Horn sounding not an alarm siren. D4 3.0 SDV6 Indus Silver  
Post #23551586th Dec 2023 5:44 pm
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Kilovolt
 


Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1064

United Kingdom 2013 Discovery 4 3.0 SDV6 Commercial XS Auto Baltic BlueDiscovery 4

I could be wrong about this!! but I thought it sounded to tell you it had been activated / triggered since last locked.

Are you sure all doors, bonnet and tailgate are all fully secured.

Someone who knows better will be along shortly Whistle "Track day running - Don't put your foot back on the accelerator until your absolutely sure you don't have to take it off again"

Current Ride: D4 XS Commercial Baltic Blue SDV6 fully loaded with heated everything Smile
Track Days: BMW E36 M3 Evolution MY 1996 (3.2 Litre 377 BHP sat in 1,250 Kgs of car, with a pro safety cage and some serious braking power) Smile  
Post #23553178th Dec 2023 12:57 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13018

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

and it's a rare D4 if someone has managed to get the horns to sound instead of the ultra quiet alarm * !!



* it isn't actually quiet, but it's inside a virtually sound-proofed box under a sound-proofed bonnet.  
Post #23553208th Dec 2023 2:21 pm
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C.French145
 


Member Since: 14 May 2023
Location: South Lanarkshire, Scotland
Posts: 112

Scotland 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Mariana BlackDiscovery 4

Hello,

I would check the interior monitor sensor. Plug the GAP in and have a look to see if it’s faulting.

My friend’s DS had the same symptoms when locking the car. This was his faults.

BCM-Body Control
B112C-87 (2F) Interior motion sensor - Bus signal/message failure - missing a message
B112C-96 (2F) Interior motion sensor - Component failure - internal failure Craig.


~~~~~~~~~~~~~~~~~~

Current -
Discovery 4, 2015 HSE Lux. SDV6.
Previous -
D2 2003 TD5.
110 1997 300tdi.  
Post #23553588th Dec 2023 9:28 pm
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Lrstaylor
 


Member Since: 03 Oct 2018
Location: Kent
Posts: 616

England 2005 Discovery 3 TDV6 HSE Auto Adriatic BlueDiscovery 3

If you unplug the alarm horn then the car defaults to using the standard car horns to sound the alarm if it's the same as a d3. Popular mod and scares yhe crap out of people when it goes off if you have air horns fitted. Rolling with laughter  
Post #23554259th Dec 2023 5:55 pm
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