Posted in the XK/XKR section also (I have a 5.0 XKR) so hope cross-posting isn't frowned upon here...

I need to change the spark plugs on my car which means removing the two coolant hoses on either side of the intercoolers to gain access below. For the life of me I don't seem to be able to get the coolant hoses disconnected. They have press-tabs either side and looks like you should just be able to press them inwards and then remove the hose but I can't seem to get mine off the intercoolers.

Is there a knack to this that I'm just missing? I have tried fuel/coolant hose pliers that turn inwards at the nose on each side to press inwards on the tabs but I still can't get them moved...