How to change the coolant on my subaru outback 2013

IT TURNS ON WHEN I PASS 85 KM/h.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2944067:04crwdne2944067:0:

Wilber, what turns on? Are you saying the water temperature warning light comes on, or something else?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

I think I need to change the coolant.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

But I don'k Know how to change it.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

@wilberjmorales clarify this "IT TURNS ON WHEN I PASS 85 KM/h." That does not sound coolant change related.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0