See also:

Wheel balance
Each wheel was correctly balanced when your vehicle was new, but the wheels will become unbalanced as the tires become worn during use. Wheel imbalance causes the steering wheel to vibrate slightl ...

Examples of the types of accidents in which the driver’s/driver’s and front passenger’s SRS frontal airbag(s) will basically not deploy.
The driver’s and front passenger’s SRS frontal airbags are designed basically not to deploy if the vehicle is struck from the side or from behind, or if it rolls onto its side or roof, or if ...

Brake booster
The brake booster uses engine manifold vacuum to assist braking force. Do not turn off the engine while driving because that will turn off the brake booster, resulting in poor braking power. The brak ...