All 2006 Porsche Cayenne S questions

Need up grade for PCM Cayenne S 2006, does it exist?

THE DIGITAL SHIFT NUMBERS ON MY DASH CLUSTER ARE OUT EVERYTHING ELSE WORKS OK

wheel well marker light. do you need to pull the light housing out to change the bulb

My Cayenne S is due for 40,000 mile major maintenance which includes oil change,filter element ch...