I have a 1994 Volvo turbo sedan with keyless entry.Ocasionally,when opening the driver's door (whether the door has been locked or not),the emergency flasher starts flashing,all the dash icons illuminate,and the engine won't turn over.All I do is disconnect the battery's negative terminal,reconnect it,then all the bad symptoms disappear and the engine starts.Prior to buying this car an aftermaket alarm system was installed.What gives?? Is there an anti-theft mechanism in this car?
Thank you