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Adey69



Member Since: 23 May 2025
Location: Leicester
Posts: 5

United Kingdom 2009 Range Rover Sport TDV6 HSE Santorini Black
Transmission fault HDC fault

Transmission Fault
HDC Fault
Gearbox fault,
Parking break fault
Suspension lowered but Not indicated in the 4x4 info screen
All came up in the message centre.
Yellow warning lights too.

Any ideas what this could be no loss of power just lose cruise control and suspension goes a bit harder.

Plugged a DTC reader in nothing showing current or historic

Thanks for any help guys
Adey

Post #649161 Tue Jul 29 2025 6:08pm
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daxmatt



Member Since: 16 Aug 2014
Location: kent
Posts: 215

have a look on the 4x4 info screen, do the wheels move when you turn the steering wheel ?

Post #649162 Tue Jul 29 2025 6:13pm
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Adey69



Member Since: 23 May 2025
Location: Leicester
Posts: 5

United Kingdom 2009 Range Rover Sport TDV6 HSE Santorini Black

Yes the wheels turn perfectly when I turn the wheel

Post #649164 Tue Jul 29 2025 7:53pm
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RRSTDV8



Member Since: 13 Aug 2011
Location: Northamptonshire
Posts: 9099

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Serious suggestion: check the brake lights. Blown brake light bulbs have been known to throw up a cascade of failures (because the HDC system uses the brake lights, a failed brake light prevents HDC which then throws up errors in systems that talk to HDC).

Loose earthing point. There are several around the car particularly in the engine bay and front wheel arches.

Battery/alternator dying. Low electrical power / electrical quality causes all sorts of issues with these vehicles because there are so many ECUs. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #649171 Tue Jul 29 2025 11:16pm
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Adey69



Member Since: 23 May 2025
Location: Leicester
Posts: 5

United Kingdom 2009 Range Rover Sport TDV6 HSE Santorini Black

I did notice last night when I checked if the wheels on the screen moved when I turned the steering wheel that it happened when I touched the brakes so good call I will check the brake lights today
Thanks

Post #649175 Wed Jul 30 2025 7:24am
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Devon Z



Member Since: 22 Sep 2019
Location: Brixham, Devon
Posts: 321

England 2005 Range Rover Sport TDV6 HSE Java Black

+1 for checking brake lights, my gearbox went into limited gears and no manual change turned ont to be brake light bulb had been arkin and had burned the bulb holder, couldn’t get the bulb out. Steve

2005 2.7 TDV6 HSE, ongoing project.
1998 Volvo V70 R auto FWD, Back on the road again.
1999 BMW Z3 (owned from new) garage queen.

Post #649178 Wed Jul 30 2025 9:09am
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Adey69



Member Since: 23 May 2025
Location: Leicester
Posts: 5

United Kingdom 2009 Range Rover Sport TDV6 HSE Santorini Black

Thanks for all the advice

It turned out to be the brake light switch changed that and pop all works as it should

Post #649180 Wed Jul 30 2025 12:57pm
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Devon Z



Member Since: 22 Sep 2019
Location: Brixham, Devon
Posts: 321

England 2005 Range Rover Sport TDV6 HSE Java Black

Yes that too, I keep a spare in the glove box. Steve

2005 2.7 TDV6 HSE, ongoing project.
1998 Volvo V70 R auto FWD, Back on the road again.
1999 BMW Z3 (owned from new) garage queen.

Post #649184 Wed Jul 30 2025 3:56pm
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RRSTDV8



Member Since: 13 Aug 2011
Location: Northamptonshire
Posts: 9099

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Glad it was a simple resolution. Thumbs Up 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #649186 Wed Jul 30 2025 6:37pm
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