The dealership did the service for me when I took my 99 in for the window switch issue.

It was listed on the invoice as "A/C aux fans not operating when engine is at idle".

The parts listing for the fix includes a wiring harness and replacement of the blown fuse.

__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car