CV driveshafts, cooling system hoses and brakes all follow similar service life curves on a car like the Outlander. Rubber components, whether driveshaft boots or coolant hoses, age with heat cycles and time. At a certain mileage, they tend to reach the end of their service life together.
The CV joint failure follows a predictable path. The rubber boot cracks from age and heat. Once grease escapes and dirt enters the joint, wear accelerates rapidly. The early sign is a faint click under steering input. Left alone, it progresses to a pronounced knock, then to joint failure that can leave the car unable to drive.
The cooling system deterioration is independent but follows the same ageing pattern. Rubber hoses harden and crack from years of heat cycling between cold starts and operating temperature. A radiator at high mileage develops small leaks that can progress if ignored.
Fixing them together in one visit is efficient: the car comes in once and the jobs share the lift time.