What's with the water under the 307 sign pad?

The possibility of this problem is relatively wide. The first is whether your vehicle has had an accident. It may be that the welding point is not well welded, and it will get wet when it rains. The second one is whether the air conditioning water in the air conditioner is turned on and whether the air conditioning drain is blocked. If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.