Seat belts
The seat belts can be cleaned by wiping them with a sponge dampened in a mild soap solution.
Allow the belts to dry completely in the shade before using them. See “Seat belt maintenance” in the “Safety – Seats, seat belts and supplemental restraint system” section of this manual.

Do not allow wet seat belts to roll up in the retractor. NEVER use bleach, dye or chemical solvents to clean the seat belts, since these materials may severely weaken the seat belt webbing.
See also:
Fuel-filler door
...
Environmental factors influence the rate of corrosion
Moisture
Accumulation of sand, dirt and water on the vehicle
body underside can accelerate corrosion.
Wet floor coverings will not dry completely inside
the vehicle and should be removed for dry ...
Monitor, climate, audio, phone and voice recognition systems
WARNING
● Positioning of the heating or air conditioning
controls and display controls
should not be done while driving in order
that full attention may be given to
the driving operation.
...
