My wife's E320 wagon is having A/C problems. Up until today, the A/C worked fine. But now, although it is putting out cold air, the fan is not blowing the air out with any force. The same thing happened when we were looking at purchasing the car, but the dealer said they replaced the fuses and it worked fine. I checked under the hood and didn't see any related fuses in the fuse box that were bad. Are they any fuses inside the car that could be bad?