2010 Buick LaCrosse Owner's Manual - Page 121

Instruments and Controls 4-35 Engine Cooling System Messages A/C Off Due to High Engine Temp This message displays when the engine coolant becomes hotter than the normal operating temperature. To avoid added strain on a hot engine, the air conditioning compressor automatically turns off. When the coolant temperature returns to normal, the air conditioning compressor turns back on. You can continue to drive the vehicle. If this message continues to appear, have the system repaired by your dealer/retailer as soon as possible to avoid damage to the engine. Engine Overheated - Idle Engine This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. Engine Oil Messages Change Engine Oil Soon This message displays when the engine oil needs to be changed. When you change the engine oil, be sure to reset the Oil Life System. See Engine Oil Life System on page 9‑13 and Driver Information Center (DIC) on page 4‑25 for information on how to reset the system. See Engine Oil on page 9‑11 and Scheduled Maintenance on page 10‑2 for more information. Engine Overheated - Stop Engine This message displays and a continuous chime sounds if the engine cooling system reaches unsafe temperatures for operation. Stop and turn off the vehicle as soon as it is safe to do so to avoid severe damage. This message clears when the engine has cooled to a safe operating temperature. Engine Oil Hot, Idle Engine This message displays when the engine oil temperature is too hot. Stop and allow the vehicle to idle until it cools down. High Coolant Temperature This message displays if the coolant temperature is hot, see Engine Overheating on page 9‑21. Coolant Level Low Add Coolant This message will display if the coolant is low, see Engine Coolant on page 9‑18. Engine Oil Low - Add Oil This message displays when the engine oil level is too low. Check the oil level. See Engine Oil on page 9‑11.