Volvo S90 2019 Owner's Manual page 488

STARTING AND DRIVING
Fitting and removing the towing
eye
Use the towing eye for towing. The towing
eye is screwed into a threaded socket behind
a cover on the right-hand side of the bumper,
front or rear.
NOTE
If the car is equipped with a towbar, there
is no rear mounting for a towing eye.
Fitting the towing eye
Take out the towing eye from the foam
block under the floor in the cargo area.
486
Front: Remove the cover - press on the
marking with a finger.
> The cover pivots around its centre line
and can then be removed.
Rear: Remove the cover – press on the
marking with a finger while you fold out
the opposite side/corner.
> The cover pivots around its centre line
and can then be removed.