Discovery 2017

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  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    Wife came back in car , and is it me or is it missing a relay ????

  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    Mole HD wrote:
    You can upgrade your IID tool from the G3 version you have to the latest G4 version via the GAP website. You just post the old G3 back to them and they'll send a new G4 out to you...

    The Gen 4 IID tool has full coverage and support for the D5...costs £220 for the replacement though. Still cheaper than buying a brand new Gen4 IID tool...that'll sting your wallet at £550.

    I did the G3-G4 exchange when I bought the D5. Bought the G3 IID tool when I got the Disco 4.

    G3-G4 replacement

    As much as I’d love to atm it’s a no go
  • Mole HD
    Member Since: 18 Nov 2024
    Location: Orkney Islands
    Posts: 444
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    Dazz360 wrote:
    Wife came back in car , and is it me or is it missing a relay ????


    Certainly looks like it...could that be the one for the FBH perhaps? I wish I could get out to mine so I could check against that photo...definitely a no go till this storm has passed. I'd end up being blown over to Norway...it's wild and getting worse Neutral


    Last edited by Mole HD on 4th Oct 2025 7:15 pm. Edited 1 time in total
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    Am I chasing an elephant here ?
    Does this mean anything like I haven’t got the spec fitted or just someone previously has took it out
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    Mole HD wrote:
    Dazz360 wrote:
    Wife came back in car , and is it me or is it missing a relay ????


    Certainly looks like it...could that be the one for the FBH perhaps? I wish I could get out to mine so I could check against that photo...definitely a no go till this storm has passed. I'd end up being blown over to Norway...it's wild and getting worse Neutral

    When you do get chance please post a pic of the actual relay so I can get one please mole
  • Mole HD
    Member Since: 18 Nov 2024
    Location: Orkney Islands
    Posts: 444
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    It's really hard to tell...could have been a previous issue and a fix by some indy garage mechanic...or it might be nothing at all.

    Even checking yours against mine, we've both got the same 2017 year of manufacture...but yours is an HSE lux and mine is an HSE. Could well be some differences in that rear panel due to you having the rear entertainment, electric sunroof, cabin mood lighting etc that I don't have...

    I'd stick to why the FBH isn't working as a first port of call before we go comparing pics of rear fuseboxes...but of course I'll do the pic thing once this storm has blown over Thumbs Up
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    Dazz360 wrote:
    I’ve found this

    Is the junction box central the fuse board in the boot ?


    Thing is this is part of the fuel burner
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red


  • Mole HD
    Member Since: 18 Nov 2024
    Location: Orkney Islands
    Posts: 444
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    The junction box central should be the passenger compartment...assuming the engine compartment is the front and the boot (RJB) being the rear one.

    In the passenger compartment fusebox...like we talked about yesterday... the 5amp fuse covering the FBH is F27 on that board. The diagram doesn't assign values to any of the relays in there though.

    Fuse F27 covers the FBH, TPMS and the front of the roof console....I can safely assume that neither your TPMS nor the roof console have any issues, so that would rule that fuse out.

    I'm still none the wiser as to what the relays in that fuse panel cover...I can find no listings for relay functions for any of the fuse panels at all. So, unless it's clearly marked on the individual fuse box covers...I've no idea what they do Neutral
  • Mole HD
    Member Since: 18 Nov 2024
    Location: Orkney Islands
    Posts: 444
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    The best bet in the meantime is to set the Timed climate thing on the centre screen to fire up in 5 minutes then go out and listen to see if you can hear the FBH running...it's loud enough to hear if it's working.

    If it isn't...we can take it from there...
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    I’ve tried it all week
    Nothing
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    Dazz360 wrote:
    Dazz360 wrote:
    I’ve found this

    Is the junction box central the fuse board in the boot ?


    Thing is this is part of the fuel burner

    This diagram shows fuse 27 5amp
    And fuse 40 20amp and this relay so to me it must be the passenger fuse box
  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red


  • Dazz360
    Member Since: 07 Aug 2025
    Location: Walsall
    Posts: 133
    United Kingdom 
    2017 Discovery Td6 HSE Lux Firenze Red

    I’ll check relay 1 on the passenger this time, clean it and see what happens
    Also my relay tester will be here tomorrow

  • Mole HD
    Member Since: 18 Nov 2024
    Location: Orkney Islands
    Posts: 444
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    Normal rules apply then...check at the plug if it's getting power (12v) when it's switched on, if it's got power and it's not running...it's mechanical...or an internal electrical fault within the FBH itself.

    Then we can go looking for why it's not got any power if there's nothing at the plug... if that's the case Wink


    Last edited by Mole HD on 4th Oct 2025 10:15 pm. Edited 1 time in total
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