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Patw
Member Since: 24 Aug 2019
Location: Essex
Posts: 6
  
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Hi I wonder if anyone knows why I cant get my disco 3 to start.it ran well I stopped off and the engine turned over
But failed to start after a few attempts it started I had engine fault come up when I got back home engine turned but it wont fire any advice before I see mechanic
Many thanks
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 26th Aug 2019 2:58 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10486
 
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Welcome Patw
You might start by looking at these threads, there are more, for which you can search:-
https://www.disco3.co.uk/forum/engine-turn...wont+start
https://www.disco3.co.uk/forum/starting-pr...wont+start
Let us know how you get on.
Good luck
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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| 26th Aug 2019 3:44 pm |
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Patw
Member Since: 24 Aug 2019
Location: Essex
Posts: 6
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Thanks for info
I managed to start my car after playing around with the handbrake switch then switched it off car wouldnt start
Had park brake warning light come on even opening the drivers door park brake light came on. New battery fitted still wont start when the car started had engine f come on and park brake fault
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| 3rd Sep 2019 6:17 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
 
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I wonder if a bad module (hand brake) is disrupting the CAN bus communication,
You could try unplugging the handbrake module at the rear (if you suspect it) and see if that helps
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| 3rd Sep 2019 6:58 pm |
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Patw
Member Since: 24 Aug 2019
Location: Essex
Posts: 6
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Thanks I try that in the morning see what happens
I msg my results
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| 3rd Sep 2019 7:00 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
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I worry the module needs to be in the bus loop.
I'm not sure
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| 3rd Sep 2019 7:08 pm |
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M3bobby
Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857
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Certain modules need to be on the CAN and some don’t. I suspect as a safety device, that this one will need to be on, the WS manual will likely mention it.
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| 4th Sep 2019 8:52 am |
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Patw
Member Since: 24 Aug 2019
Location: Essex
Posts: 6
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I'm trying to find the canbus system have no idea where it is any ideas
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| 4th Sep 2019 11:03 am |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
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the can bus are the pair of yellow wires that are twisted together.
they allow every ecu to communite with each other.
guessing...
there is a high speed can bus
a low speed can bus
an infotainment can bus
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| 4th Sep 2019 12:04 pm |
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Patw
Member Since: 24 Aug 2019
Location: Essex
Posts: 6
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After tapping dash board car started had engine fail also handbrake park flashing told me to press hand brake switch
Nothing happend ordered another switch.tried to drive it but the handbrake dash light flashing and seemed to have brake on.switched car off same prob again car wouldnt start.....is the bus com in engine or dash board .......
Thanks everyone for advice greatly appreciated
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| 4th Sep 2019 1:23 pm |
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Oswiperus
D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1590
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The CAN BUS is the communication network that connects all ecu's and modules around the D3, as Pete says, it's a pair of twisted yellow wires. It even loops into the EPB module so there may be a pointer there?
Any break or bad connection can mean a failure to start but CAN BUS faults usually cause the indicators to flash and the doors to lock/unlock repeatedly.
You may need expert help. Broadfields in Great Canfield near Dunmow come highly recommended and I've heard good things about Essex 4x4 in Wickford but never used them personally. 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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| 4th Sep 2019 2:20 pm |
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Patw
Member Since: 24 Aug 2019
Location: Essex
Posts: 6
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Many thanks I give them a try
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| 4th Sep 2019 3:08 pm |
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