Question about 2007 Volvo XC70 Cross Country

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Coolant level light won't go off

Coolant level light came on today on my XC70 1999 wagon...
Topped her off with approved anti-freeze ( an inch now above full ) but after waiting and restarting, the red coolant light still won't go off...
Checked the fuses...none down...
No leaks in the radiator or hoses that I noticed or saw.
Any ideas anyone? Thanks!

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Could be that you have either a loose connection to the coolant temp sensor or the sensor itself is bad you will find the sensor near the thermostat housing on the intake manifold. p-lease rate this

Posted on Sep 06, 2008

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This sounds like a low coolant (anti-freeze) level related problem.

After the car has been sitting for hours and the engine is COLD (over night is ideal), check the coolant reservoir of the car. Fill the reservoir with a 50 / 50 mixture of coolant (a type approved for use in your car) and water to the COLD line.

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Leave the cap OFF and start the engine.

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You should begin to see the coolant in the radiator begin flowing as the engine warms up. If at any time the coolant level in the radiator drops, add additional 50 / 50 coolant and water mixture as needed to get to the 1 - 2 inch level described above previously.

As the engine warms, the coolant will expand slightly and may begin to overflow from the radiator filler neck. At this point, replace the radiator cap SECURELY. If you needed to add coolant at any time in these steps you should have heat now. If not, try driving the car until the car engine reaches normal operating temperature.

If you're still unable to get heat, there may be a clog in the heater core or hoses that supply it; air trapped in the heater core circuit or other issue that will need a mechanic to repair.

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