I have a 2002(give or take a year) LS170 that's stuck in a customers back yard. I have a warning light for hydraulic. Fluid level is fine. It will run and hydraulics work, but auto shuts off after 15 seconds. Is there a way to display a more detailed fault code without a reader? I need to further diagnose this issue to determine if it can be fixed on site or if in needs to be towed out. I'm 300 feet from the road so driving it out is unlikely.