96 E300D Ac Aux Fan nt coming on!! Speed sensor
 

The Fan works fine with a direct 12v at the fan and in the fuse box. The fuse box card says there is a orange 40 amp fuse in slot #20 but there is not a slot #20 on the fuse board the fan wiring runs into a module or something A 210 545 04 32. Any HELP the car is getting close to 120 temp mark in this summer heat in Nashville

Also Speedometer quit I replace forn wheel sensor didn't help is there a speed sensor in the rear hub??