[Eric L.]

If you are driving enthusiastically in Ds, it will hold a ratio and let you rev it to redline (and hold it there).

Are you saying that even if you let off the gas, the RPM's do not drop?

 

[Eric L.]

Actually Ds does shift through the gears, just at a much higher rpm. It should not stay at redline if you let off the gas and just coast. The reason why you don't really feel Ds shift through the gears is what makes the CVT so special, it can hold high RPMs to give you maximum acceleration. Now, if you are able to rev it and hit the rev limiter in Ds (I think thats around 6750rpm) then there is something wrong with the CVT computer.

 

[Eric L.]

The FSM does not give any description of limp mode other than "the CVT will continue to operate at reduced performance" if the CVT overheats or throws a code. I believe CVT overheating will turn on the CVT light on the dash, and a code will be stored if the CEL is on. Since no repair info exists on the CVT (even the FSM says any defect, replace the whole thing), if your Ds is stuck as you say, take it to the dealer for diagnosis.

 

[Eric L.]

I think we can conclude here that if that is indeed happening to generator's Murano, the CVT is acting funky and he should take it in to the dealer for them to look at.

Please post an update after you have visited the dealer - this is a very interesting problem and I would like to hear how the dealer resolves it! Thanks.

 

[Eric L.]

On my way to school today I did a little test with Ds and L. Accelerating from a stop, Ds reads a steady 4000rpm at 50MPH once I stopped accelerating. With L, I could tell the CVT was adjusting ratios to keep the RPM around 4000 while I was cruising, regardless of speed. So, all seems ok with my car.

 

[Eric L.]

Thanks for all replies.....This morning I tried the Ds mode again BUT this time it acted normal. Shut the car on and off 2 or three times to see if it would come back. Now my car does not rev in the 5000-6000 rpm range. It sort of coasts around 4000. I dont know why my car was acting weird before. It may be because I was driving for over two hour to Six Flags before I played with the shifter. I was almost at my destination when my passenger asked me what the S was for and I attempted to show it. Thats when it got scary. All seems OK for now.

I would still take it to the dealer to see if they can pull a code. With the CVT, I would not take any risks.