Hi

I recently had a new radiator installed and then a new condenser on my 2003 2.4 Alphard.

The heater isn't working so I thought I would top up the coolant, even though the engine temperature is completely normal.

When I take off the cap and pour in new coolant, the plastic connector is leaking where it connects to the top of the radiator. Surely this is supposed to be sealed? I just can't get it to fit on properly.

I have no idea if this is the reason the heater isn't working, but it might just be that the coolant is low and I can't top it up.

Any thoughts?

Hi, That's just a header tank for levels, not the actual holder for the coolant. If the heater is cold then you have an air lock. Park facing uphill with van warm/hot and carefully (best use a cloth to cover the metal radiator cap) undo it then with the engine running and the heater on full blast (hot) not Aircon mode gently sqeeze the big pipe next to the radiator and it should start to move the air lock out of the system.