Methods and system pertaining to displaying vehicle data parameters (VDP) are described. A vehicle service tool (VST) with a display can receive vehicle data messages or signals from a vehicle to receive the VDP. Some of the VDP can be associated with a PID. The VST can display VDP thresholds and indicators when a received VDP has breached a VDP threshold. The VST can determine being changed from a landscape orientation to a portrait orientation or vice versa and responsively change the presentation of VDP graphs displayed by the display. The display can receive various inputs such as a drag-and-drop or pinch-and-expand input to alternatively change the presentation of the VDP graphs being displayed. Changing a VDP presentation of graphs can include resizing or repositioning one or more VDP graph windows including a VDP graph.