Heater Blower Not Working

[mmi]

box marked 524 as in the photo

Depending on whereabouts of the "524" - most likely it is CANbus isolation relay.
For Climatic (4-speed blower) look approx. 5 cm further up.

 

[Sallysmith101]

I had a similar problem, it was the fuses at the bottom of the fuse box, 40amp, second from bottom on the left