Need to fix antifreeze leak.
I would recommend having a qualified professional come and perform a cooling system pressure test (https://www.yourmechanic.com/services/coolant-is-leaking-inspection) on your vehicle. There are many places on a vehicle where coolant can leak from, including the hoses, radiator, water pump, and heater core...
Ignition coil doesn't work Mechanic's Assistant: Have you checked the battery lately? Yes it is good Mechanic's Assistant: What is the make/model/year of your car? 2006 scion tc Mechanic's Assistant: Are ...
Ignition coil doesn't work Mechanic's Assistant: Have you checked the battery lately? Yes it is good Mechanic's Assistant: What is the make/model/year of your car? 2006 scion tc Mechanic's Assistant: Are you fixing your tC yourself? What have you tried so far? Yes, I change ignition coil, ignition coil connector and spark plug Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Yes