According to my woring diagram fuse 23 has the following on it,
front dome lamp with switch- off delay and reading lamp (e15/2) ATA control module (n/26) Infrared remote central locking control module ( n/54) Dimmable interior rear view mirror. Now for the noise under the hood sounds like a loud air pump from what you say.
Mercedes Technician 7 Years (retired to Hyundai)
2000 Dodge Durango
98 Mazda truck