2004 Toyota Corolla Owners Manual - Page 87
2004 Toyota Corolla Manual
Page 87 highlights
'04 Corolla_U (L/O 0306) The outside temperature is indicated on the display when the ignition switch is on. The displayed temperature ranges from −30_C (−22_F) up to 50_C (122_F). If there is any abnormality in the connection of the outside air temperature sensor, " −−" will appear on the display. If " −−" appears on the display, contact your Toyota dealer. There may be a case that "−−" appears momentarily when the ignition is quickly turned to "ON". It is normal if it goes out soon. 87 2004 COROLLA from Oct. '03 Prod. (OM12859U)