bleeding radiator C180

[akz786]

Hi

As mentioned above, since having new waterpump and whole system filled with new coolant the water level light comes on and off intermittently on the car (not a problem before) So I assume perhaps as mentioned before this may be to do with air in the system?. Even after taking it out and cleaning now before I go to buy a new one how do I bleed the radiator on a C180 auto? there is small red tap like screw on the bottom right corner ...do I just open this?

PS - silly question but where is the min and max level on the filler ? I cant see a level marking.

TIA!!

 

[C220GJS]

The red screw you mention is for draining the radiator.
To ensure you have no air trapped in the header tank ,take out the coolant level sensor then fill the radiator until coolant comes to the top of the filler , refit the radiator cap and the level sensor, switch on and if the light is still on I would suspect the sensor is faulty, any excess coolant will vent out the overflow as the engine heats up.
Geo.

 

[akz786]

Thanks Geo I shall try that, just realised I posted this in the wrong forum! oopps

Thanks again