LX off road for the 1st time today!

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Dec 17, 2020
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Arizona
Beautiful day in sunny AZ. Decided to take a drive and test out 4Lo and crawl control. By way of a recap, bought it with 89K miles. Did total fluid flush all the way around first thing.

I only saw two vehicles on the trail. Toyota and Jeep. I was the only LC/LX.

For 6000 pounds, it did amazing. Decent inclines, over rocks, loose gravel, loose dirt, ruts. Basically beat up ATV/4x4 trails.

The only thing I am not sure of is how much time should it take for the suspension to go from N to HI? It seems like it take my LX 2-4 minutes.

Here is a pic from the side of the road.

IMG_0371.webp
 
Congrats! Glad you got it out!

I haven't timed it but I would say my 2013 LX570 takes 30 sec or so to go from N to H.
 
For your reading pleasure:. It should get there in 10-20 seconds. If it's not, I'd check your AHC fluid for replacement (my time cut in half after changing fluid). A couple other caveats to these times. The 5th accumulator only contains enough fluid to go up one level (i.e. from L -> N or N -> H). Then you have to wait for the accumulator to refill, or if you are going from L -> H for some reason, you'll be doing one level off the accumulator and one only on the pump, which will take considerably longer. Also, other things to consider. All the doors must be closed for AHC to move, and your foot must not be on the brake to move up (only the rear moves if your foot is on the brake). When you let off the brake, the front will move up and finish the process. I suspect this is the reason yours is "taking minutes" to move. I think if the system was actually pumping that long, it would throw and error and deactivate.


1616435628082.png
 
For your reading pleasure:. It should get there in 10-20 seconds. If it's not, I'd check your AHC fluid for replacement (my time cut in half after changing fluid). A couple other caveats to these times. The 5th accumulator only contains enough fluid to go up one level (i.e. from L -> N or N -> H). Then you have to wait for the accumulator to refill, or if you are going from L -> H for some reason, you'll be doing one level off the accumulator and one only on the pump, which will take considerably longer. Also, other things to consider. All the doors must be closed for AHC to move, and your foot must not be on the brake to move up (only the rear moves if your foot is on the brake). When you let off the brake, the front will move up and finish the process. I suspect this is the reason yours is "taking minutes" to move. I think if the system was actually pumping that long, it would throw and error and deactivate.


View attachment 2622729
So, turns out I’m a AHC noob and didn’t realize putting your foot on the brake is bad. :). Works like a charm when you follow the instructions!

thank you so much!
 
Haha, no problem. I was doing the same thing. I was terrified there was something wrong with mine and spent quite a bit of time finding/reading documents on how it's all supposed to work. Looks like we both bought silver LX's at almost the same time.
 
Beautiful day in sunny AZ. Decided to take a drive and test out 4Lo and crawl control. By way of a recap, bought it with 89K miles. Did total fluid flush all the way around first thing.

I only saw two vehicles on the trail. Toyota and Jeep. I was the only LC/LX.

For 6000 pounds, it did amazing. Decent inclines, over rocks, loose gravel, loose dirt, ruts. Basically beat up ATV/4x4 trails.

The only thing I am not sure of is how much time should it take for the suspension to go from N to HI? It seems like it take my LX 2-4 minutes.

Here is a pic from the side of the road.

View attachment 2621994
What size Falkens are you running?
 
For your reading pleasure:. It should get there in 10-20 seconds. If it's not, I'd check your AHC fluid for replacement (my time cut in half after changing fluid). A couple other caveats to these times. The 5th accumulator only contains enough fluid to go up one level (i.e. from L -> N or N -> H). Then you have to wait for the accumulator to refill, or if you are going from L -> H for some reason, you'll be doing one level off the accumulator and one only on the pump, which will take considerably longer. Also, other things to consider. All the doors must be closed for AHC to move, and your foot must not be on the brake to move up (only the rear moves if your foot is on the brake). When you let off the brake, the front will move up and finish the process. I suspect this is the reason yours is "taking minutes" to move. I think if the system was actually pumping that long, it would throw and error and deactivate.


View attachment 2622729

Great input here! Particularly the commentary on the 5th accumulator.

I've found that on rare occasions that if I try to lift immediately after starting the car, that the 5th accumulator may not be primed for a quick lift (def under 10 seconds). Using the lift function after the car has been running for a minute or so will allow it to lift as I expect into high, usually pretty quick in well under 10 seconds. Coming from the 100-series, the 200-series system is much faster at lifting which I appreciate.

I'm curious if some of the OPs symptoms may be that his AHC fluid level is low, not allowing the system to fully prime. Maybe worth a check.
 

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