2014 s550 coolant loss
#1
Junior Member
Thread Starter
2014 s550 coolant loss
Hello,
can’t seem to find the leak, not too long ago I did have an issue with coolant leaking into the windshield reservoir but got that fix along with intercooler lines and plastic part behind the firewall as well.
this time however I’m having to add coolant once a week, it’s not completely drained but add just enough to fill to the black line.
One thing I do notice though, after my car is cooled down and I try to open the cap the next morning it’s extremely hard to open, usually that’s the case when it’s pressurized and hot still but when the car is completely cold it’s hard to open, could it be the cap or the reservoir that needs to be replaced?
Also a little bit of dried coolant on the side of the plastic reservoir. Could reservoir and cap be the issue?
thanks for your help!
can’t seem to find the leak, not too long ago I did have an issue with coolant leaking into the windshield reservoir but got that fix along with intercooler lines and plastic part behind the firewall as well.
this time however I’m having to add coolant once a week, it’s not completely drained but add just enough to fill to the black line.
One thing I do notice though, after my car is cooled down and I try to open the cap the next morning it’s extremely hard to open, usually that’s the case when it’s pressurized and hot still but when the car is completely cold it’s hard to open, could it be the cap or the reservoir that needs to be replaced?
Also a little bit of dried coolant on the side of the plastic reservoir. Could reservoir and cap be the issue?
thanks for your help!
#2
The last time my coolant tank was pressurized was a blown/leaking head gasket. There is a test kit, don't remember what it was called, to test for cylinder leak into your coolant. Hope you have caught it early.