 | Home > General & Technical (L663) > Diffs locking while cornering |
 
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| eno Member Since: 15 Apr 2024 Location: Qld Posts: 34  
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I guess the amount of lock depends on the Driving mode as well as the conditions. But mine seems to show the locking in 1/3rd increments on the graphic. Here is the rear showing 2/3rds locking and the centre showing 1/3rd.
 Click image to enlarge |
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5th Jan 2025 12:07pm |
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| ardevd Member Since: 04 Mar 2024 Location: Norway Posts: 38 
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Ah, neat. I didn't notice the progress bars before and only looked at the padlock icon. Makes sense.
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5th Jan 2025 12:08pm |
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| eno Member Since: 15 Apr 2024 Location: Qld Posts: 34
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If you look at the rings on the axle images you can see the inner rings are yellow colour. That yellow rings seem to be an indication of axle torque but I haven't seen a description of that. If you are driving and the centre is unlocked only the rear rings show yellow. The number of yellow rings changes with load
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5th Jan 2025 12:18pm |
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| Mrburt Member Since: 04 Jan 2023 Location: Shropshire Posts: 31 
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Ardevd,
You are indeed correct ref the diffs preloading. The vehicle takes data from a myriad of sensors from air temperature, wheel, pitch, roll, yaw to name but a few. Add in the particular terrain response setting and you can have diffs preloading at any point in response to the data and this process can change many times a second if needed. Rock crawl will have the diffs locked much earlier than for example mud ruts which will allow some amount of slip. Look at diff locks as a proactive response to changing conditions and traction control as a reactive response. A good example for me this week is traveling in snowy conditions in TR - grass, gravel, snow. Stationary at a junction, on a 5 degree slope with temperature at zero intending to turn right. Both diffs showing fully locked, however as I made the right turn the vehicle recognised I was able to move off and turn and the rear just opened slightly to assist. Center remained locked as a 50/50 split front/rear was maximising traction opportunities. Making turns while moving with the center diff locked does not cause issues, but turning with a fully locked rear diff can cause wear over time but this is likely to occur infrequently and the vehicle would not adopt this position at high speed. Now front locking diffs are a different matter but LR do not fit these to their current range. The yellow rings on each drive shaft show the amount of torque proportioned to each wheel. Be mindful that the off road displays can be a bit laggy and the display in the centre of the instrument display is usually more accurate that the one on the pivi big screen. Apologies for the long response, hope this helps and please shout up if you need more. |
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6th Jan 2025 10:18pm |
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| Fifth Horseman Member Since: 08 Mar 2011 Location: Lanarkshire Posts: 326 
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That blanket statement applies only in the context of driving on a reduced traction surface. If done on a surface with good traction it certainly does cause issues, namely transmission wind-up due to the front and rear wheels following slightly different paths, just ask any competent driver of a vehicle equipped with a manually lockable centre diff. Rear diff if locked in a turn on low traction surfaces will actually reduce traction due to wheel slip caused by both wheels being forced to rotate at the same speed. The electronic transmission controls on the L663 should lock (either partially or fully) either diff to give optimum traction in the prevailing conditions. In extreme conditions of wheel slip the ABS system will also come into play. |
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6th Jan 2025 10:44pm |
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