cap is off
You would have a leak, from either the pipes to the heater matrix (radiator), or the matrix itself.
could be hearer core lines answer antifreeze leak on driver side usually means either head gasket od a freeze plug leaking heater hoses generally go up passenger side
if u mean antifreeze then i would say the heater core but it is more in the middle to the passenger side but could just be running over there
You have to determine the source of the leak then decide on how to fix it.
heater core
water pump
Its probably a freeze plug. chhep to buy but its hard to get to
Perhaps the radiator itself or lower hose - try pressure testing system to find leak
Heater core leaking?
Either your windshield or driver's side window has a major leak
I had a 2000 Lincoln LS and the Antifreeze Reservoir had a rash of heat induced cracks on the side facing the Firewall. The antifreeze would ooze and evaporate without leaving a puddle but a whiff of the smell could be noticed on some occasions. My 2005 LS has some of the same cracks but has not started to leak or ooze antifreeze. Also on my 2005 LS there was an upper hose leak but only with 16 psi or more of pressure.
if it leaks on left side of engine at hose,could be a bad water pump! on 3.1 engine. if pump is bad it will leak out of releif hole on bottom of pump!