Get the vehicle scanned and see if there are any CVT related errors. If all is OK
You need to change the CVT fluid through cooler line method. This way the Torque converter spit out old sludge as in picture above and whole transmission have fresh new CVT fluid
it is better you also change the transmission oil filter if the drained oil is close to cola colour
transmission cooler lines be removed from radiator bottom, start engine momentarily to see which line squirt oil, that line goes to drain tub, other line be connected through filler FUNNEL with approx 5 liters of CVT fluid. Start engine and let it idle make sure funnel does not empty ( approx total 7 - 11 liters is required ) let engine idle till the fresh new oil appear in the drain tub. Shut down engine, connect the tub line to radiator bottom and start again let idle radiator bottom will also clean away the old and new oil will come all the way. Time to remove fresh oil funnel line and connect back to radiator bottom. Start again check for any seepage at lines. Check transmission oil level Top up if necessary.
