This indicator light illuminates :
Trailer towing
If you are considering towing with your vehicle, you should first check with
your country's Department of Motor Vehicles to determine their legal requirements.
Since laws vary the requirements ...
Blade replacement
When the wipers no longer clean adequately, the blades may be worn or cracked,
and require replacement.
To prevent damage to the wiper arms or other components, do not attempt to move
the wipers ...