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DISCO3.CO.UK > Technical (D3)

HDC grinding noise
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e635815
 


Member Since: 27 May 2019
Location: Chavannes sur l'Etang
Posts: 27

France 2009 Discovery 3 TDV6 HSE Lux Auto Galway GreenDiscovery 3
HDC grinding noise

Hello all,
When I engage the HDC on my disco3 HSE, the front end of the car makes an awful grinding noise. As if there was sand in between the brake disks and pads. The system operates the way it should when going down-hill except for the noise. In normal operation the car is absolutely silent. Is this normal or do I have an issue? HDC supposedly only operates the brakes right?
Thanks
Philippe  
Post #216968524th Aug 2020 3:11 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10485

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I think its normal.  
Post #216970824th Aug 2020 4:46 pm
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waterbuoy
 


Member Since: 26 Oct 2013
Location: Argyll
Posts: 2883

United Kingdom 2009 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

Yup - sounds horrendous but works! (If you lightly place your foot on the brake pedal you can sometimes feel the vibrations through that.) Currently 2009 Disco 3 SE, 2013 MY D4 HSE and 2016 D4 SE
Previously:
TD5 Defender 110 CSW (230k miles)
300TDi Disco 1 (289k)
4 RR Classics (300-350k each, 2 manual, 2 auto)
110 V8 CSW (220k)
S3 109 hi cap pickup (ex RN)
S2A 88 Safari SW with lpg conversion (bloody lethal)  
Post #216971824th Aug 2020 5:28 pm
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Discoveringcomfort
 


Member Since: 16 Sep 2015
Location: Berkshire
Posts: 637

England 2005 Discovery 3 4.4 V8 HSE Auto Zambezi SilverDiscovery 3

DSC makes the same sound but on one side only. Series 1 V8
Series 2 Hibrid V8
Discovery 3 HSE V8  
Post #216975224th Aug 2020 7:48 pm
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DiscoJeffster
 


Member Since: 27 Feb 2016
Location: Perth
Posts: 204

Australia 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

It's the ABS/terrain control system pulsing the brakes. It's normal  
Post #216989425th Aug 2020 1:47 pm
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e635815
 


Member Since: 27 May 2019
Location: Chavannes sur l'Etang
Posts: 27

France 2009 Discovery 3 TDV6 HSE Lux Auto Galway GreenDiscovery 3

Yep, tried putting my feet on the brake pedale and could feel it pulsating while ABS works its wonders.
Ok, then it is all normal.
Thanks for your help.
Regards
Philippe  
Post #217071530th Aug 2020 3:24 pm
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