Hi, I am new LC 200 driver ad I use my LC 200 in Sand Driving and normally I drive in H4 with my Traction switched off. However for bigger slopes or when I get stuck I try to use L4 but I am seeing my wheels do get intermittently locked when I am using L4 though my traction control is switched off. Its same outcome even if the Diff is Locked. Is this normal? Or anything I need to do for this. I am attaching a video for your reference.
LC200 Wheel getting locked in L4 Sand Driving
- Thread starter bimal
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- 200 series
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afgman786
SILVER Star
I didn't notice any locking in that video, but if you're saying in L4 you feel it grabbing at the wheels as if traction control is on. The one thing I can think of is you didn't fully disable VCS and its A-TRAC kicking in.
When you turn traction control off are you in Park and holding the button until you see VCS off come up in the center display? Or just push it so it shows traction control off?
When you turn traction control off are you in Park and holding the button until you see VCS off come up in the center display? Or just push it so it shows traction control off?
- Thread starter
- #3
Yes, I am referring to that grabbing and yes I long press and the VCS off come up in the centre display. However, in this video, I haven't locked by Diff. But I tried with Diff lock also and the result is the same.
Hrmm, seems like the truck is spinning all wheels and doing a find job getting up the hill? Or the front left does seem to be getting less power midway.
They key in my experience to sand or loose surfaces is the center diff lock button. Does two things - makes sure power goes to both axles, and disables VSC.
They key in my experience to sand or loose surfaces is the center diff lock button. Does two things - makes sure power goes to both axles, and disables VSC.
When I watch that video, I see both left side wheels appear to stop turning when going up the hill, and they actually appear to turn backward.
I believe this is just an illusion arising from the frame rate of the video (ie. stroboscopic effect or wagon wheel effect). I don't believe your wheels are actually locking.
io9.gizmodo.com
I believe this is just an illusion arising from the frame rate of the video (ie. stroboscopic effect or wagon wheel effect). I don't believe your wheels are actually locking.
Why Do Wheels Sometimes Appear To Spin Backwards?
You've seen this optical illusion in movies — but it happens when you're watching in person too. What's really going on?
io9.gizmodo.com
Any kind of traction aids limiting wheel speed typically also cut throttle at the same time. You probably wouldn't be able to hit the rev limiter like it sounded that you were doing.
It looked like you had plenty of wheel speed/spin.
It looked like you had plenty of wheel speed/spin.
bloc
SILVER Star
100% frame rate making it appear they stopped. The front tire is throwing sand but under the vehicle due to steering wheel angle. See cloud of sand coming out of that wheel well when the tire looks stopped.
- Thread starter
- #9
I doubt if its just video because people standing out were also telling me the same as it was looking as though my wheels were not getting proper traction. Please check the below video as well the sequence I have done is I switched off traction and Vsc. Then locked Diff and then changed to L4. Is the gripping we see is part of sand mode we select when we change to L4?
Also what gear we should be if we are in L4 as I see if I shift to 2 if I am in L4 I feel there is no power.
Also what gear we should be if we are in L4 as I see if I shift to 2 if I am in L4 I feel there is no power.
cant really see in the video and maybe you are doing all this already but just to confirm....
There are 2 systems that need to be turned off for the sand. With gear in Park you should hold down the stability button for about 4-5 seconds. This switches of both VSC (vehicle stability control) and then TRAC (traction control). 2 separate lights will appear in the speedo: VSC and TRAC. It does them 1 at a time so keep holding the button after the first one lights up until the second comes on too. You need both these systems off for the sand. Or they will grab and slow spinning wheels.
second, and of equal importance, you need to hold for 3-4 seconds the RSCA button (on switch panel next to door) to turn off the roll sensing curtain airbags. Otherwise if you take a side slope the airbags may, anticipating a roll, go off and that will be very expensive indeed. This button does not turn them off completely it seems, it just requires much larger angles to activate. Remember to press and hold to turn them back on when you get back to the tarmac.
Usually I would only use 4L if actually stuck and not moving, and then in 1-2 with little accelerator to turn the wheels very very slowly in order to slowly dig out. Once you are on top of the sand again, stop and select 4H. If you use the manual sequential gearbox, 2-3 mostly, rather than D, you will get much more power down when you need it. tire pressure 12-13 range is good. If you are flooring it in 4L perhaps it is a protection system cutting the power in order to not damage the drive train.
There are 2 systems that need to be turned off for the sand. With gear in Park you should hold down the stability button for about 4-5 seconds. This switches of both VSC (vehicle stability control) and then TRAC (traction control). 2 separate lights will appear in the speedo: VSC and TRAC. It does them 1 at a time so keep holding the button after the first one lights up until the second comes on too. You need both these systems off for the sand. Or they will grab and slow spinning wheels.
second, and of equal importance, you need to hold for 3-4 seconds the RSCA button (on switch panel next to door) to turn off the roll sensing curtain airbags. Otherwise if you take a side slope the airbags may, anticipating a roll, go off and that will be very expensive indeed. This button does not turn them off completely it seems, it just requires much larger angles to activate. Remember to press and hold to turn them back on when you get back to the tarmac.
Usually I would only use 4L if actually stuck and not moving, and then in 1-2 with little accelerator to turn the wheels very very slowly in order to slowly dig out. Once you are on top of the sand again, stop and select 4H. If you use the manual sequential gearbox, 2-3 mostly, rather than D, you will get much more power down when you need it. tire pressure 12-13 range is good. If you are flooring it in 4L perhaps it is a protection system cutting the power in order to not damage the drive train.
afgman786
SILVER Star
I didn't hear any ABS or anything kicking in to grab a tire, also you don't hear RPM drop as if the computer is trying to cut power.. my LC doesn't have the terrain modes so I can't help with that question. But if you have all traction aids off and center diff locked, you can still have scenarios where you will see a wheel not spinning. If 1 wheel on the axle has good traction and the other doesn't, all your power is going to be sent over to the one without traction on that axle. Maybe this is what's happening when you or the people you're with notice one wheel isn't spinning?
- Thread starter
- #12
Thanks for the detailed explanation, I see one thing I am missing from the steps you have mentioned that is pressing of vsc off as I press first it shows traction off in centre display and then I press it again and one light comes and I was actually stopping there. I have never waited for second light
and probably it looks like that the may the problem. I am hitting the dunes today will check that.- Thread starter
- #13
I see the mistake what I have done from what others have suggested is I used L4when climbing as well which may have triggered this gripping scenario. The people where saying it was looking like my truck was struggling to move.
