Kia Optima: Rear Wheel Speed Sensor. Components and Components Location

Inspection

1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground. ...

Rear Wheel Speed Sensor. Repair procedures

...

See also:

Recommended Shifting
Drive the vehicle in the highest gear that allows the engine to run and accelerate smoothly without hesitating or stalling. This will give you the most efficient fuel economy and emission control. ...

Inflation Pressures
All tire pressures (including the spare) should be checked monthly when the tires are cold. “Cold Tires” means the vehicle has not been driven for at least three hours or driven less than one mile ...

Components (1)
1. Brake booster 2. Master cylinder assembly 3. O-ring ...