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locking operating without using FOB
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RichardK
 


Member Since: 18 Jan 2006
Location: Western Australia
Posts: 295

Australia 2009 Discovery 3 TDV6 S Auto Atacama SandDiscovery 3
locking operating without using FOB

Hi all,
My D3 is locking intermittently without my using the key fob, happens at any time and I dare not leave the keys inside while unlocked. I also have to relock it sometimes when locked so the unlock will work.
I am suspecting perhaps a faulty sensor or FOB. has anyone had this problem?

If a door is left open and it locks by itself the horn goes off to indicate the unlocked door, most annoying for the neighbors!

I have sprayed contact cleaner on the DS bonnet latch and removed that electrical plug and sprayed that also.

Can anyone give me any suggestions how to approach this problem?

Cheers
RichardK
 2009 Discovery S 3, BAS tune, EGR Delete, ARB winch bar, Milemarker hyd winch, HF and UHF radios, Rear spare wheel carrier, Roof rack,
Touring: Australian Offroad Matrix IV Camper 
 
Post #226148011th Nov 2021 3:42 am
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1805

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

Any codes show up, could be key fob battery
  
Post #226148211th Nov 2021 6:10 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10599

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Do you have 2 working keys. ?

Try putting your usual key in a tightly sealed metal tin, in the house and use the spare key for a bit.
See if that stops it.

Obviously the car re locks itself after 60s if it thinks no door has been opened.
If you think this could be the cause, check all door switches trigger lights/dash warning door open
  
Post #226148311th Nov 2021 6:41 am
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

It could be a faulty door catch.
Normally if you unlock the car but dont open a door it will relock after a short time, if switch inside the door catch is faulty it might not recognise that you opened the door.
Does the interior light come on every time you open the door?
 Andrew

D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE 
 
Post #226148411th Nov 2021 7:22 am
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RichardK
 


Member Since: 18 Jan 2006
Location: Western Australia
Posts: 295

Australia 2009 Discovery 3 TDV6 S Auto Atacama SandDiscovery 3

Thanks for the replies.

No codes showing on the GAP that relate to the problem.

Yes have 2 working keys will try your suggestion Pete, the car will relock itself several times when it is "in the mood"

As there are no relative fault codes haw do I ascertain which door lock may be faulty?

Cheers
RichardK
 2009 Discovery S 3, BAS tune, EGR Delete, ARB winch bar, Milemarker hyd winch, HF and UHF radios, Rear spare wheel carrier, Roof rack,
Touring: Australian Offroad Matrix IV Camper 
 
Post #226149311th Nov 2021 9:10 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10599

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

You open the door and ensure

1) The lights go from off to on.
2) You check the dash says DOOR OPEN.

I'm not convinced it that at fault, as the horn wouldn't sound on re-arm, but its worth eliminating
  
Post #226156111th Nov 2021 2:01 pm
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RichardK
 


Member Since: 18 Jan 2006
Location: Western Australia
Posts: 295

Australia 2009 Discovery 3 TDV6 S Auto Atacama SandDiscovery 3

Hi Pete K,
Yes does both things.
Haven't had any trouble today with the other FOB isolated, it is certainly well worn, I have ordered another and will program it in on arrival.
Thanks for your help.
Cheers
RichardK
 2009 Discovery S 3, BAS tune, EGR Delete, ARB winch bar, Milemarker hyd winch, HF and UHF radios, Rear spare wheel carrier, Roof rack,
Touring: Australian Offroad Matrix IV Camper 
 
Post #226171712th Nov 2021 9:37 am
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