Discovery 2017

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  • Madrilleno
    Member Since: 11 Jul 2016
    Location: Nottingham
    Posts: 28
    England 
    2022 Discovery Si6 HSE Santorini Black

    Whine in low range

    Dropped my MY2022 D5 HSE into low range yesterday afternoon, just to give it a run. Only had the car for a few weeks, so hadn't tried it till now. It has a really loud whine.
    Opinions on whether it's likely to be a problem or lack of use. It's booked in to the dealer to investigate, but wondered if anyone else had the same experience. I'm thinking transfer box is almost certainly the culprit, as high range is silent.

    There are two rules for success,
    1. Never tell everything you know.
  • JonM
    Member Since: 30 Jun 2016
    Location: North Yorkshire
    Posts: 598
    United Kingdom 
    2022 Discovery SDV6 HSE Carpathian Grey

    The transfer box whines if you're going quickly in low range. I only notice it when I'm being lazy and don't change back to hi range e.g. for a short section of tarmac road before going off-road again.

    MY2022 D5 HSE D300 - with extra nice bits added
    MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price!
  • Madrilleno
    Member Since: 11 Jul 2016
    Location: Nottingham
    Posts: 28
    England 
    2022 Discovery Si6 HSE Santorini Black

    Afternoon Jon. This seems rather louder than I would expect, although obviously more so at speed. Would you classify it louder than your D4, because mine certainly is?

    In comfort setting, the gearbox is going to start off in second or third, I can try dropping into M&R or Rock Crawl to force first gear and asses it with those parameters. I’ll also try to record it.

    There are two rules for success,
    1. Never tell everything you know.
  • JonM
    Member Since: 30 Jun 2016
    Location: North Yorkshire
    Posts: 598
    United Kingdom 
    2022 Discovery SDV6 HSE Carpathian Grey

    Definitely louder than the D4, but not noticable on most green lanes. It seems to be road speed related not engine speed related. I'd guess that I start to be aware of it at about 15mph.

    MY2022 D5 HSE D300 - with extra nice bits added
    MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price!
  • Madrilleno
    Member Since: 11 Jul 2016
    Location: Nottingham
    Posts: 28
    England 
    2022 Discovery Si6 HSE Santorini Black

    Thanks, I'll check it out this evening.

    There are two rules for success,
    1. Never tell everything you know.
  • Trevorb1
    Member Since: 08 Jan 2018
    Location: Nuneaton
    Posts: 284
    United Kingdom 
    2018 Discovery Td6 SE Corris Grey

    Just for info, it will not make any difference which gear the gearbox is in, it will be the low range gears in the transfer case. On D4 & pre 21My D5 the transfer case was a Magna supplied item, on 21MY onwards D5, the driveline is different and the transfer case is a BorgWarner supplied unit, both will exhibit gear whine in low ratio but should be quiet in normal ratio.

    24MY D300 Dynamic SE, Fuji White, Deployable Towbar, full size spare.
    Gone 20MY SDV6 Landmark, Indus Silver, Deployable Towbar, 360 Cameras
  • Madrilleno
    Member Since: 11 Jul 2016
    Location: Nottingham
    Posts: 28
    England 
    2022 Discovery Si6 HSE Santorini Black

    Having reviewed the noise last night, I have decided that there isn’t a problem after all. The transfer box seems to conform to your descriptions in that it’s pretty quiet up to about 15mph.

    There are two rules for success,
    1. Never tell everything you know.
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