Radiator Fan does not come on with Engine Request?

Hello, I thought you had this all sorted out already?

I assume you've cleared out all the codes after the last repair, what's the ECT getting to in the stop and go traffic (we'll call it city driving). It looks like 100c on the Cluster, so roughly 212f? Is that accurate to scan data? And are codes setting after 2 drive cycles?

These are the two coolant system diagrams, pretty complicated thermostat setup, Mode F shows coolant temp greater than 102c, thermostat fully opens to flow through the radiator. So that would be its max temperature unless I can find a different spec.

There are some pretty interesting info, along with the ton of other information on the cooling system, but I'm not sure what the water to antifreeze ratio is right now in the vehicle, but they have a very specific ratio spec and some reasoning behind it, if its 55% or more antifreeze, apparently this increases the boiling point of the mixture due to lower heat transfer of the coolant itself. So really it should be a 45% antifreeze ratio that will bring it to -22f freeze protection, But if there is a much higher ratio of antifreeze, which is difficult to tell unless its checked, who knows if the customer has just been dumping straight antifreeze in it over the years and the percentage is much higher now, you could check the concentration with one of those floating ball gauges, but it says to only use MB antifreeze as well. Not something that's well known I'll bet, about the boiling point changing according to the mixture. Regular people usually just dump in whatever is in their garage.

I'm not sure what color the MB coolant is, the green coolant is most likely just regular old antifreeze, but is the 100c temperature the highest it's getting on the gauge?

Well, 92c is only 197.6f, 97c is 206.6f, and on either coolant system diagram 102c is when the thermostat is fully opened and coolant is directed through the radiator, the 206f is okay with me, I know that a Subaru kicks on the cooling fan at exactly 204f because I used to work for them at a dealership. But remember that you did have a communications code from the Cluster to the ECM at one point, I'm not sure how much of the harness you have messed with since then, what's been unplugged and plugged back in, but I'm sure you would get a warning light on if the coolant temperature went too high. I know the temperature in Celsius can look foreign to us techs in the US, I usually just google a Celsius temperature to Fahrenheit, and it will bring up a conversion chart, it's just easier for me to see it that way as well.

I would drive it for a couple days and take a few longer drives to see if any codes are set, some take longer than others, but it looks like you're getting to the bottom of things finally with this vehicle.

So it sounds like things are okay?