We have a 2009 XF in the family fleet. Obviously, it's now 8 years old, but with fairly low mileage. As a confirmed "maintenance freak", as well as one who is used to dealing with "easy to work on", American V-8s, I tend to look at things like belts and hoses as wear out items, and things that are replaced every so often.


As many of us are aware, Jaguars tend to use specific, molded to shape, as well as expensive, cooling system hoses. Due to their cost and complexity, I'd rather not replace them "just because". However, since we do take the car on an occasional trip, I want the car to be as reliable as possible. If you have an issue on the road, Jag dealers aren't found every 50-60 miles, and on top of that, they don't tend to stock a lot of parts. And, Autozone, Advance Auto Parts, or NAPA won't be of any help, either.


Having said all of that, is there a good indication of the life expectancy of the cooling hoses?

 

It all depends on the amount of heat in your environment and under your hood. Heat and age are what deteriorates the plastic. Mine started leaking at about 29,000 mile and only 3 years old. So you have been lucky with a 2009 if in fact no replacement has been performed. But there truly is no real time frame. I would do it soon though just to prevent any other issues which may make repairs more expensive and the cost of towing.

 

Assuming no visible signs of wear, try squeezing the hoses at several points. They should be flexible, but not overly so. If they are really easy to collapse, they are weak.

Keep in mind overheating these motors is very bad, so if you have any doubts replace them. Mileage is not the issue at this point. It is age.

 

I have a 2009 XF SC with about 70k miles and the throttle body coolant hose on mine started leaking a couple weeks ago. It's taken over a week to get the hose shipped to the shop from Jaguar.

Not sure if this helps you.