Member Since: 07 Nov 2005
Location: Tyrol, Austria
Posts: 387
Park brake "jerky" release
On my (automatic) D3 there is a little jerk when the car starts off again after the parl brake has been applied, as though the brake was binding slightly. I would probably have accepted this as normal and got into the habit of releasing the brake explicitly (rather than assuming it would release itself). However, when I was back in Edinburgh over Easter, I drove a Renault Megane Scenic with an electronic park brake and there was no such jerk when moving off.
Is the "jerk" normal on the D3 or does it mean that my D3 needs some slight adjustment?
BTW, why does the park brake not release automatically on the manual D3? Is it just a marketing thing? The Renault had a manual gear-box but still released its park brake automatically.
(As an aside: I picked up the Renault in the dark. No handbook, no explanations. If I hadn't had Disco, I would have been very confused to find it had no handbrake! Even then, it took me a while to find the park brake on the dashboard )
Eric
5th May 2006 6:05 am
SN
Member Since: 03 Jan 2006
Location: Romiley
Posts: 13710
The Park Brake on my automatic does the same.
In general I don't use the Park Brake at all as its an automatic unless I'm parked on a hill.Steve N | 21MY Defender | 08MY Discovery 3 (history) | 06MY Discovery 3 (ancient history)
5th May 2006 8:31 am
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50979
I suspect that it is designed to do this for accurate control during hillclimbing - it won't release until a certain forward force is applied and this results is the weight of the vehicle causing a ripple of momentum in the form of a slight jerk. 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
I suspect that it is designed to do this for accurate control during hillclimbing - it won't release until a certain forward force is applied and this results is the weight of the vehicle causing a ripple of momentum in the form of a slight jerk.
Yep, I feel the same. Recently, My auto went in to cure the screaming brakes when pulling away after application of handbrake. The solution by LR was to clean the system and to give the mechanism a looser tolerance. The adjustment does however, make for a slight jerk when I pull away.
I have to say I prefer the new setting as I feel the handbrake is releasing properly.TDV6 SE auto, Java / Alpacca
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5th May 2006 4:39 pm
espri
Member Since: 07 Nov 2005
Location: Tyrol, Austria
Posts: 387
Thanks for the comments. It seems a little jerk is normal on the Disco.
After reading other comments on this forum, that the park brake wasn't necessary/counterproductive, I too stopped using it for a while. However, since the car mostly gave a little jolt when I left it just in 'parked', I worried that this might damage the transmission in the long term and went back to using the park brake again.
Eric
5th May 2006 7:56 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26779
Mine jumps a little if I drive away with the park brake on. Never thought it was a problem, I'm just glad it now works after all the trouble with it.
5th May 2006 8:35 pm
Tim in Scotland
Member Since: 27 Jun 2005
Location: All at sea
Posts: 496
I have an RRSport that also does this, I have found that giving the accelerator a gentle (I mean very very light) quick push, just enough to send the revs up (a tshort "blip"!) and then taking my foot back off again very quickly seems to overcome the jerk and gives a smooth take off.
5th May 2006 8:39 pm
espri
Member Since: 07 Nov 2005
Location: Tyrol, Austria
Posts: 387
espri wrote:
It seems a little jerk is normal on the Disco.
Oops - I wasn't speaking about the drivers on this forum, of course
Eric
5th May 2006 10:06 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26779
Oi, less of the 'little'
5th May 2006 10:07 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50979
In my case - you were right the first time 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
5th May 2006 10:09 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The drivers handbook in Germany had an insert sticker stressing how the handbrake must be used to stop expensive damage to the transmission.
The advice was, on stopping on an incline with your foot on the brake, select neutral - apply handbrake - release pressure on foot brake - once settled apply handbrake.
Some of the staff guys at the Land Rover Experience mentioned this too. Seems that the park transmission pin is rather weak, in relation to the weight of the vehicle. They also expected a Tech Note to be out about this in the UK. That was a few months ago and I have heard nothing from LR since; although I think someone else posted on this a while back.
6th May 2006 7:05 am
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26779
There was a whole batch of transmissions with bad park pin components. There was a recall.
6th May 2006 7:39 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Gareth wrote:
There was a whole batch of transmissions with bad park pin components. There was a recall.
So was the sticker 'advice' just for a limited time, or does it still stand?
6th May 2006 8:06 am
Dave
Member Since: 08 Mar 2006
Location: North Yorkshire
Posts: 2462
The parkbrake on my Auto also jerks just to support that, and seems acceptable to me. What I have wondered is that when you are stopped for only a short while like at the lights, does anybody leave it in Drive with the parkbrake, or do you put it in Neutral.
I do and seems fine fine but I dont want to break it!Captain Nick Medhurst would ask:
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I would Reply:
"Duratrac"
6th May 2006 2:59 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I think the handbook encourages us to put the car in 'N', to save the greenhouse or something, so it will be fine.
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