 | Home > Td5 > TD5 Locking and Double Horn Sound |
 
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| rustandoil Member Since: 08 Sep 2012 Location: Cotswolds Posts: 892   
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Bonnet switch?
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18th Sep 2025 9:45am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6736  
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Don't forget the bonnet switch too!
Edit: too slow   1988 90 Td5 NAS soft top
2015 D90 XS SW |
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18th Sep 2025 9:45am |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 1001  
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As posted a double beep of the horn means that a door is not identified as closed by the 10AS unit. It is most likely the bonnet switch. Bend it up a tad 
Good luck. 2020 range Rover Mk IV Autobiography PHEV 2010 Range Rover MkIII Autobiography Super Charged (Idris) 2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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22nd Sep 2025 7:10pm |
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| Tank Member Since: 25 Jul 2014 Location: Fife Posts: 444  
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Thanks for the replies. Been away, hence the delay replying
Bonnect switch is ok, I think, and I replaced the other three switches. What else can it be? Would plugging in the Nannocom tell me anything? Cheers |
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1st Oct 2025 9:44am |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 1001
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Nanocom can tell you which switches are actually working and or open. 2020 range Rover Mk IV Autobiography PHEV
2010 Range Rover MkIII Autobiography Super Charged (Idris) 2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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1st Oct 2025 12:00pm |
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| markb110 Member Since: 22 May 2010 Location: Guildford Posts: 2707 
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For two two years the rubber boot on my bonnet switch was torn, but no issues. Then a few months back the alarm would just go off, once three hours after I locked it, then thirty seconds, then an hour, then about an hour after that, so I then put it in the garage and left it unlocked. I checked all the door switches then decided to replace the bonnet switch and no issues since. For the cost, and because it looks ok, it still might be worth changing it. Good luck |
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1st Oct 2025 1:37pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 6060 
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Yes plugging in your Nano will tell you which switches are doing what. Or the other way of doing it it to see which of your doors does not trigger the interior light. Often it is the rear door (boot). |
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1st Oct 2025 3:58pm |
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| Tank Member Since: 25 Jul 2014 Location: Fife Posts: 444
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Thank you.
Will try out all these things Cheers |
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1st Oct 2025 4:07pm |
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| Tank Member Since: 25 Jul 2014 Location: Fife Posts: 444
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Ok what does this all mean.
What's the fault? Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge |
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1st Oct 2025 5:49pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 6060
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When you got those results were ALL your doors shut?
It tells me that it thinks passenger door is open and unlocked and drivers door is unlocked. Sit in, and lock all doors. Then what you get. |
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1st Oct 2025 7:11pm |
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| Tank Member Since: 25 Jul 2014 Location: Fife Posts: 444
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OK, Nanocom photos when I'm in the car and doors locked.
When I leave the doors locked and start the car the alarm wails than honking
Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge |
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2nd Oct 2025 1:29pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 6060
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Just checked a few things for you.
The Nanocom does NOT KNOW which door is open and which door is shut. It knows the drivers door The bonnet BUT. It then groups passenger doors, and boot all together. |
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2nd Oct 2025 1:49pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 6060
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Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge |
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2nd Oct 2025 2:10pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 6060
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First pic is all doors closed and locked
Second pic is all doors closed but unlocked Third pic is passenger only open, and all doors unlocked Fourth pic is boot door only open, and all doors unlocked |
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2nd Oct 2025 2:13pm |
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