See also:

Cleaning The Parksense System
Clean the ParkSense sensors with water, car wash soap and a soft cloth. Do not use rough or hard cloths. Do not scratch or poke the sensors. Otherwise, you could damage the sensors. ...

CD/DVD Disc Maintenance
To keep a CD/DVD in good condition, take the following precautions: 1. Handle the disc by its edge; avoid touching the surface. 2. If the disc is stained, clean the surface with a soft cloth, ...

Master Cylinder – Brake Fluid Level Check
Check the fluid level in the master cylinder immediately if the brake system warning light indicates system failure. Check the fluid level in the master cylinder when performing underhood service ...