Why does your s60 Volvo brakes are hard to push or do not work when you first start the car?

If the brakes on your S60 Volvo are hard to push or don't work when you first start the car, it could be due to a vacuum issue. The brake booster relies on engine vacuum to assist with braking; if the engine isn't running, the booster won't function effectively. Additionally, if there's a leak in the vacuum line or the brake booster itself, it may cause the brakes to feel stiff. It's advisable to have the braking system inspected to ensure safety.