HSE_LUX
Member Since: 03 Dec 2019
Location: Orpington
Posts: 34
  
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Hi
Last week two chavs tried to steal my 2015 Discovery 4. They broke the passenger side window, which has now been replaced. As far as I know, the alarm did not sound - it was not going when they were spotted by a neighbour and made their escape.
The car locks/unlocks as it should, but I get the 'Smart Key Not Found - Refer to Handbook' message when I try to start the car. Following the procedure on page 90 of the handbook (holding the key against the bottom of the steering column) allows the car to start, but I do not get a 'Smart Key Recognised' message and have to follow this procedure each time to start the car.
All the settings appear to have reset too - so I get audio/visual dash warning when the doors are opened, for example, where this was previously not the case. There was also a distinct smell of unburned diesel when I started it up for the first time in a week.
Any ideas?
Thanks
Simon
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 28th Apr 2020 9:50 am |
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dewillia
Member Since: 04 Aug 2019
Location: Wolverhampton
Posts: 71
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First thing to try is a hard reset
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| 28th Apr 2020 9:59 am |
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HSE_LUX
Member Since: 03 Dec 2019
Location: Orpington
Posts: 34
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Many thanks - what is the procedure for this, please?
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| 28th Apr 2020 10:02 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10807
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This will help:-
https://www.disco4.com/wiki/Hard_Reset
NJSS Am I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
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| 28th Apr 2020 10:03 am |
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HSE_LUX
Member Since: 03 Dec 2019
Location: Orpington
Posts: 34
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"CAUTION: MY14 vehicles and later with Stop/Start have an additional battery fitted; the implications of this for the hard reset technique are not fully understood."
This doesn't sound like a good idea to me...
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| 28th Apr 2020 10:09 am |
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Oswiperus
D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1600
 
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Re your alarm not going off, Just checking that you press the fob lock button twice as this activates the internal sensors and super lock on the D4. Pretty sure that's correct. D3 is opposite way around with 1 push for super lock. Stu
2016 D4 Landmark current
2022 Defender D300 SE Gone 
D4 2014 XS Commercial - Gone
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone
D2 1999 TD5 E white - current
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| 28th Apr 2020 10:18 am |
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HSE_LUX
Member Since: 03 Dec 2019
Location: Orpington
Posts: 34
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I can't say that I always was pressing it twice as a routine, and to be honest on the night of the attempted theft I can't be sure I had.
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| 28th Apr 2020 11:10 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10807
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Quote:
"CAUTION: MY14 vehicles and later with Stop/Start have an additional battery fitted; the implications of this for the hard reset technique are not fully understood."
BUMP - can someone help Simon please.
NJSS Am I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
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| 28th Apr 2020 3:46 pm |
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philm
Member Since: 02 Oct 2016
Location: Manchester
Posts: 732
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I did a reset on an MY16 without disconnecting the small battery, it didn't cause any problems. L633 Defender
Range Rover Velar-gone
Discovery 4 Landmark-gone
Gap IID Tool
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| 28th Apr 2020 5:14 pm |
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Canburne
Member Since: 15 Jan 2013
Location: Devon
Posts: 2036
 
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The question in my mind is 'if you short out the main battery leads after disconnection from the main battery are you effectively also shorting out the stop/start battery??' .
"the inherent vice of capitalism is the unequal sharing of blessings....the inherent vice of socialism is the equal sharing of miseries" Winston Churchill
2016 D4 Landmark Club Waitomo ...or is it Club Tempest????
2015 D4 HSE Aintree Green
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| 28th Apr 2020 5:28 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10807
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Quote:
"CAUTION: MY14 vehicles and later with Stop/Start have an additional battery fitted; the implications of this for the hard reset technique are not fully understood.
BUMP - again. Can someone clarify this for Simon - please?
NJSS Am I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
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| 30th Apr 2020 10:38 am |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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dewillia wrote:First thing to try is a hard reset
Before that, get a new battery for the smart key. 2003 D2a Auto TD5 good Landy gone
2015 D4 probably the most amazing yet, why get a RR?
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| 1st May 2020 8:52 am |
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Adigorn
Member Since: 14 Mar 2010
Location: Birmingham
Posts: 546
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If the car locks and unlocks and starts but doesn not recognise the key is most likely antena fault.
Try to put the key on the back seat and attempt to start it will give you the answer if its single antena at fault or antenas ( more likely wiring issue than) The Old rangies do not go mad, they mad go
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| 1st May 2020 11:57 am |
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HSE_LUX
Member Since: 03 Dec 2019
Location: Orpington
Posts: 34
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Thanks for all the suggestions. In the end the garage fitted a new module and I had to get 2 new keys which needed programming. About a grand all in.
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| 24th Jul 2020 6:39 pm |
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