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steve smith
Member Since: 11 Mar 2008
Location: up north towards the hills.
Posts: 2427
 
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| Advice needed,car shudders when turning right on roundabout |
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I found a related thread on the forum a while ago regarding the above issue, Sometimes when making a right turn usually on say a roundabout the DSC light comes on and a noise similar to anti-lock braking appears,I read somewhere on here others had a similar fault and it was somehow linked to the EPB  Any idea's,And before you say it Bodsy (keep away from roundabouts,etc etc!!) 
cheers all. Steve
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 25th Feb 2010 2:41 pm |
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NoDo$h
Member Since: 02 May 2006
Location: Finding new and exciting ways to milk badgers.
Posts: 19689
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Puncture or tyre pressures are usually to blame. Give that a check first  I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
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| 25th Feb 2010 2:56 pm |
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AVE
D3 Decade
Member Since: 13 Nov 2006
Location: First house on the left
Posts: 3097
  
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Avoid Mackets Lane and Queens Drive... Hope it is something as simple as tyre pressure, I've got a knock developing in mine... Need to look into it before the Tesco warranty runs out.  As you slide down the banister of life
may no splinters point your way
Disco XXV
RRS2 Autobiography Dynamic MY16
Discovery Sport HSE Lux MY17
Evoque HSE Dynamic MY16 (Gone)
RRS2 Autobiography Dynamic MY14 (Lovely car but preferred the Disco!)
Disco 3 Tdv6 HSE MY05 (owned for 11 years and now gone)
Range Rover Sport HSE MY11 (Gone)
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| 25th Feb 2010 3:02 pm |
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PaulP
Member Since: 04 May 2007
Location: Barcelona
Posts: 4317
 
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If the tyre pressures look ok then it could be a few other things:
1. steering angle sensor (the yaw sensor detects you're going round a corner, but the steering appears to be pointing straight so the DSC kicks in)
2. dodgy wheel speed/ABS sensor (the exaggerated difference between wheel speeds on either side of the same axle caused by going around the roundabout and having a dodgy speed sensor could cause it to think a wheel is spinning and apply the ETC).
Unlikely to be anything to do with the EPB 
2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG
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| 25th Feb 2010 3:26 pm |
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steve smith
Member Since: 11 Mar 2008
Location: up north towards the hills.
Posts: 2427
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PaulP wrote:If the tyre pressures look ok then it could be a few other things:
1. steering angle sensor (the yaw sensor detects you're going round a corner, but the steering appears to be pointing straight so the DSC kicks in)
2. dodgy wheel speed/ABS sensor (the exaggerated difference between wheel speeds on either side of the same axle caused by going around the roundabout and having a dodgy speed sensor could cause it to think a wheel is spinning and apply the ETC).
Unlikely to be anything to do with the EPB
Thanks for the info, i think the clockspring may need re calibrating? Tyre pressures etc are all correct. Steve
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| 25th Feb 2010 4:23 pm |
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PaulP
Member Since: 04 May 2007
Location: Barcelona
Posts: 4317
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The clock spring/rotary coupler and the steering angle sensor are two different things. 2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG
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| 25th Feb 2010 4:35 pm |
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steve smith
Member Since: 11 Mar 2008
Location: up north towards the hills.
Posts: 2427
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Paul, oh dear i thought they were the same can you elaborate a bit more for me please 
Steve Steve
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| 25th Feb 2010 6:41 pm |
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PaulP
Member Since: 04 May 2007
Location: Barcelona
Posts: 4317
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Yep sorry 
The rotary coupler (clock spring in old money) fits between the steering wheel and the multi-function switches/stalks on the top end of the steering column. It is what allows an electrical connection between the moving and fixed parts of the steering wheel/column assembly. It's what makes it possible to put buttons (switches and illumination) and also the airbag into a steering wheel. It allows this connection regardless of the angle of the steering wheel.
The steering angle sensor is fitted to the bottom of the "top part" of the sterring column and measures the angle of the steering column (and therefore the wheel) along its' axis. The D3 uses the data from this sensor to know which direction the wheels are pointing. This has data has various uses amongst other things:
- deciding if the DSC should be activated to correct the "line" of the D3 (i.e if it is not travelling in the same direction the wheels are pointing)
- stopping the auto box from changing gear mid-corner
- turning on/off cornering lamps and also telling the AFS which direction (and how much) to bend the adaptive headlights where fitted
- etc etc
You can get an idea of this sensor working by selecting a Terrain Response setting in low-range and turning the wheel - you should get a steering wheel icon in the message centre showing the wheels pointing left or right (it dissappears when pointing straight ahead).
If the calibration is wonky on this sensor, then it could cause the fault you're seeing, but as mentioned, it's just one of the possible causes so I can't be sure. 2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG
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| 25th Feb 2010 6:56 pm |
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steve smith
Member Since: 11 Mar 2008
Location: up north towards the hills.
Posts: 2427
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Paul, thank you for as superb explanation. Steve
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| 25th Feb 2010 7:10 pm |
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steve smith
Member Since: 11 Mar 2008
Location: up north towards the hills.
Posts: 2427
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Hopefully sorted it thanks to advice fron TFC when i was with him last week, The car went for a 4 wheel alignment and now it appears fine 
Cheers all Steve
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| 8th Mar 2010 6:38 pm |
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