Horários do Funchal Bus Route 90 travels between Lombo Aguiares and Casa Saúde Trapiche, Funchal, high above the city centre, in the foothills of the Central Mountain Range. The bus does not travel into the centre of Funchal but connections can be made by several city buses. My preference is Route 11. Check out the excellent Horários do Funchal Website. Their App is also useful.
http://www.horariosdofunchal.pt/mobil...
Click top right corner for English version.
For nerds like me, this maybe of interest:
https://www.keybuses.com/article/4wd...
If the article is stuck behind a paywall, try simply Googling '4 WD IN FUNCHAL' and it should work.