where is my coolant going on 2003 Volvo S60

the low coolant message is coming up often. the coolant is container is empty when this message does come up

Asked by for the 2003 Volvo S60
Keep the coolant reservoir filled up, and have the vehicle checked for a coolant leak. It's common for the radiator to leak on these, so check that, and the water pump and the heater core too.
1 more answer
buy a heater core off the web and check this out:

http://www.volvo-forums.com/t22870-1998-volvo-v70-heater-core-replacement-w-pics.htm