Silly Car Question

[mjm800]

Way back when I used to enjoy working on cars. I could change the oil, clean spark plugs, replace an air filter, even brake pads. I could do just about all basic stuff. Now that cars are computers, I don't know where anything is or how to do anything under the hood.

I'm getting a warning light on my BMW X-5, it's the check cooler fluid light. Does this mean grab a hose and put some water in the system or is it a special fluid like anti-freeze? Can I do it myself or is the access somewhere stuffed between a bunch of stuff half the engine has to be disassembled to reach it!

I feel so dumb now when it comes to cars now!