 | Home > Technical > Switch to disable ABS |
 
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| CraigF15 Member Since: 20 Jun 2016 Location: Cheshire Posts: 4   
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Hi,
I recently bought a defender 110 XS and had a custom switch which I had not a clue what it was for, I have traced the electrics and it appears to be connected to a relay switch which then disables / enables ABS by removing electrics from the fuse. Hopefully a quick question, when would it be beneficial to have the ABS disabled and would it be best just to remove the extra wiring and put the fuse back in it's normal place? I believe you need to turn off the ignition and then disable the ABS via the switch before turning on the ignition again, re-enabling can be done with the engine running. Thanks. |
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7th Jul 2016 9:54am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
 Click image to enlarge this may help you work out how the mod has been wired |
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7th Jul 2016 10:09am |
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| CraigF15 Member Since: 20 Jun 2016 Location: Cheshire Posts: 4
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Thank you,
They have wired it across Fuse 1 in the battery junction box, the switch on the dash simply removes the current going to the fuse, I think this simply disables ABS from operating completely. |
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7th Jul 2016 10:12am |
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| CraigF15 Member Since: 20 Jun 2016 Location: Cheshire Posts: 4
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Thank you.
Makes sense, will need to give it a try on some gravel with both to see what happens before I decide to rip it out. |
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7th Jul 2016 10:34am |
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| Jukathy Member Since: 25 Jan 2015 Location: Berlin Posts: 170 
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The car doesn't stop with ABS. That's awful.
Why did you order your car with an incapable system? |
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7th Jul 2016 10:09pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17209 
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I recall that the early Quattros had a switch to disable the ABS for precisely this reason, an experienced driver can stop a car quicker in snow etc without ABS.
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7th Jul 2016 10:23pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2623  
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not sure how insurers work in your country, but if you disable a safety feature on the vehicle, they may refuse a claim in case of an accident. --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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8th Jul 2016 9:29am |
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| Iggle piggle Member Since: 10 Sep 2014 Location: Wales Posts: 378 
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& if you kill someone..... you may go to jail!
 |
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8th Jul 2016 11:42am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2623
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Guys, we don't have snow on the roads here, so I can't comment on that.
However, I have driven thousands of kms on gravel all over ZA and Namibia, and not once have I found that ABS is an issue. The key is to deflate your tyres and to keep to a reasonable speed, around here that would be 80kmh in the dry and 60kmh in the wet.  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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8th Jul 2016 11:52am |
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| agentmulder Member Since: 16 Apr 2016 Location: Outer Space Posts: 1324 
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I did a masters in engineering, one of our final topics in control theory was ABS in snow, where we modelled a Bosch system. The problem is very specific to snow only... Solved the bowel problem, working on the consonants... |
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8th Jul 2016 12:35pm |
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| Green Machine Member Since: 19 Nov 2010 Location: North Yorkshire Posts: 1226 
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I think the Land Rover Experience vehicles were fitted with a switch to enable the ABS / TC to be disabled. What colour is your 110 (most Experience vehicles are silver, or white more recently)? Primarily for the purpose of being able to demonstrate the difference in the way the vehicle behaves with / without ABS / TC. 2005 Td5 | 90 Station Wagon | Tonga Green
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8th Jul 2016 12:55pm |
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| Sadi Member Since: 23 Jul 2015 Location: Windhoek Posts: 334  
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Also explained here:
https://practicalmotoring.com.au/car-advic...-the-dirt/ |
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8th Jul 2016 4:56pm |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1762 
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I assume that there's so little friction that all 4 wheels will lock at practically the same time, thus the system assumes the car is still moving with wheels locked, and tries to regain traction by releasing wheels? |
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8th Jul 2016 5:08pm |
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| Sadi Member Since: 23 Jul 2015 Location: Windhoek Posts: 334
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On an advanced driving course in 1990 - the instructors would disable the ABS so that drivers could learn cadence braking.
Recently visited an old hand regarding Land Rovers - he abhors using ABS on a gravel road - on his Defender the fuse is permanently removed ... Before DSC became available - it was common practice to remove the ABS fuse to facilitate dune- and deep sand driving - although I did not drive a Defender at that time and cannot comment on it. I was involved in an A6 Quattro accident on a gravel road when I had to swerve and brake to avoid an animal crossing the road - I believe the vehicle would have stopped better without ABS. Had a recent emergency stop in the Defender - also for a wild animal - no swerving involved and I was pretty impressed the way the vehicle behaved. To the OP: there may then be a variety of reasons why such a switch may have been installed. |
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8th Jul 2016 5:21pm |
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