Coolant Warning Messages

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The radio will display the following messages if the following conditions exist in the cooling system.

Engine hot-A/C OFF will be displayed if coolant temperature is above 117°C (243°F). For imports 115°C (239°F).
Engine coolant hot-Idle engine will be displayed if coolant temperature is above 118°C (245°F).
Engine overheated-Stop engine will be displayed if coolant temperature is above 123°C (253°F).