Okay, so you know how when it's raining, we can't see out of our car windows because the raindrops are blocking our view? That's where wipers come in! They are like hands that wipe away the raindrops so we can see where we're going.
The wipers move back and forth across the windshield, and they have little blades at the end that push away the water. Sometimes, we need the wipers to go faster if the rain is really heavy, or slower if it's just sprinkling.
The "wipers times" is just a fancy way of saying that we need to adjust the speed of our wipers depending on how much rain there is. So, if we're driving in a downpour, we might put the wipers on the fastest setting. But if it's just a light drizzle, we might only need the wipers to go on a slow setting.
So, when someone says "adjust the wipers times," they just mean to change the speed of the wipers depending on how much rain there is. It's an important thing to remember so we can stay safe on the roads, even when it's raining!