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HELP! Handbrake preventing MOT test
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3
HELP! Handbrake preventing MOT test

Hey all, hopefully someone knows what the issue is.

Car is running fine, no problems (touch wood) took it for MOT on Sunday and they had to abort as when they carried out the handbrake test running vehicles on roller and applying the handbrake, the epb gives a tremendous squeal 5en locks up, errors etc. was a right game releasing it and clearing the codes. Drove it home, fine, tried testing to breaking point and fine. Took it for he retest this morning and the same again, as soon as they pulled the brake while rear wheels spinning it squeezed and locked up, any ideas? Fault codes below

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 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is đź’• 
 
Post #229757528th Jun 2022 9:44 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Assume this is a 2 wheel roller? Back wheels only? I don't think you should test a D3 on a 2 wheel brake tester.

see here -https://www.disco3.co.uk/forum/topic119659.html

My MOT tester always uses a Tapley meter, out in the car park.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #229757728th Jun 2022 9:55 am
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Yep, 2 wheel roller, they are saying they’re putting the tester int “4x4 mode” to test. Have had the car tested at the same place since I got it and no issues.
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is đź’• 
 
Post #229757828th Jun 2022 9:58 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Never heard of '4x4' mode on two wheel tester Shocked

It's either rotating all four wheels of the car or not. The car doesn't know it's on a brake tester.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #229757928th Jun 2022 10:00 am
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Pass. I did just try to do the same test on the road, accelerate to 10pm and pull the epb on, same result, squeal and locked up so assuming there’s either an issue with the epb or Dennis is not supposed to do handbrake turns!
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is đź’• 
 
Post #229758128th Jun 2022 10:09 am
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

When my D3 and D4 are tested I dont let them do the rolling road test and ask them to use the old Ferodo brake testing meter they have, its always a palaver but they do use it and it then passes without issue.

Might be worth discussing with the tester as there isnt a 4x4 mode on a single axle rolling setup - they are perhaps telling you a porky
 Must stop buying shiny toys....  
Post #229759628th Jun 2022 11:24 am
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

So any idea if it’s an issue with how they’re testing (dropping on epb while car in motion) or is there an issue with my epb?
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is đź’• 
 
Post #229759928th Jun 2022 11:41 am
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nigethecat
 


Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4138

Ukraine 2016 Discovery 4 3.0 SDV6 Commercial XS Auto Corris GreyDiscovery 4

Definitely not recommended to drop the EPB while the car is still moving!. As others have said ask them to use a brake testing meter..
 I want to see the sweets before I get into your windowless van... I'm not stupid!

Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone) 
 
Post #229760028th Jun 2022 11:44 am
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

Applying the handbrake on the move surely triggers the emergency braking system, which - I thought - brakes all 4 wheels in ABS mode.

It's not quiet but it's not a screech.
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #229760228th Jun 2022 11:47 am
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Dondiddy
 


Member Since: 26 Dec 2019
Location: Hamilton
Posts: 306

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Yulong WhiteDiscovery 4

rrhool wrote:
Never heard of '4x4' mode on two wheel tester Shocked

It's either rotating all four wheels of the car or not. The car doesn't know it's on a brake tester.


4x4 mode allows the rollers of the axle being brake tested to run in opposite directions to avoid any issues with transmission lock up etc. Thumbs Up
  
Post #229760528th Jun 2022 12:22 pm
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Great, just took it 50 yards down the road now can’t get the epb off. Stuck across three neighbours drives unable to move it. Epb release cable not working.
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is đź’• 
 
Post #229760728th Jun 2022 12:48 pm
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

OOOOps that must be slightly embarrassing Embarassed

Was once in the car at a LRE centre when the instructor showed us the EPB on the move operation, it was quite a shock to the guy in the back who hadn't clipped his seatbelt in on the D3 despite being told to do so, he had just pulled it across himself! never seen a full grown man fit into a footwell on a D3 before Rolling with laughter Rolling with laughter

From memory it should activate all braking but I'm guessing if the EPB is slightly an issue then it wont come off after it has been pulled.

DiscoMikey did a good guide to how to rebuild the unit from memory.
 Must stop buying shiny toys....  
Post #229761228th Jun 2022 1:34 pm
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Dondiddy wrote:
rrhool wrote:
Never heard of '4x4' mode on two wheel tester Shocked

It's either rotating all four wheels of the car or not. The car doesn't know it's on a brake tester.


4x4 mode allows the rollers of the axle being brake tested to run in opposite directions to avoid any issues with transmission lock up etc. Thumbs Up


I was under the impression that the issue is though that you should only drive all 4 wheels together from the transmission using the vehicles own power and not have an external device drive the wheels, IE never tow the vehicle on ground for more than a very short distance and not drive wheels with the rolling road.
 Must stop buying shiny toys.... 

Last edited by darrind on 28th Jun 2022 2:34 pm. Edited 1 time in total 
Post #229761328th Jun 2022 1:38 pm
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SpiderBaby
D3 Decade 


Member Since: 21 Sep 2007
Location: Liverpool
Posts: 1396

England 2005 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

This has worked for me and others in the past - maybe worth a shot.

Engine off - car in "P" - foot brake held on.

Push and hold down EPB switch - keep holding down then ignition on - let it go through system check and start engine and only then release EPB switch.
 I see no ships........  
Post #229761428th Jun 2022 1:43 pm
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Dondiddy wrote:
rrhool wrote:
Never heard of '4x4' mode on two wheel tester Shocked

It's either rotating all four wheels of the car or not. The car doesn't know it's on a brake tester.


4x4 mode allows the rollers of the axle being brake tested to run in opposite directions to avoid any issues with transmission lock up etc. Thumbs Up


Thumbs Up Learn something every day.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #229762228th Jun 2022 2:30 pm
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