Why is the engine temperature light on when cold?

The engine temperature light should not be on when the engine is cold. Typically, it illuminates to indicate an elevated engine temperature, prompting checking for possible malfunctions. If the light turns on while the engine is cold, it may be due to a faulty temperature sensor, a malfunction in the gauge cluster, or an error in the wiring system. It is advisable to have the vehicle inspected by a qualified technician to determine the root cause and take necessary corrective measures.