When using the lights at night, Can anybody tell me how to get the indicator lights to stay on? The speedo and fuel gauges ect stay on but the air, window, seat warmer indicator lights don't, how can I get them to stay on? It's hard to change the air/heat without any illumination. Another stupid question does this SUV have overdrive?

would you please tell me if i need to change a transmission oil for 2002 ml 320