Vacuum assisted brakes

The brake booster aids braking by using engine vacuum. If the engine stops, you can stop the vehicle by depressing the brake pedal. However, greater foot pressure on the brake pedal will be required to stop the vehicle and the stopping distance will be longer.
When the brake pedal is depressed slowly and firmly, you may hear a clicking noise and feel a slight pulsation. This is normal and indicates that the Brake Assist System is operating.
See also:
To turn the system off
Push the OFF button. ...
Air conditioning system refrigerant and lubricant recommendations
The air conditioning system in your INFINITI vehicle must be charged with the refrigerant HFC-134a (R-134a) and the lubricant, NISSAN A/C system oil Type S or the exact equivalents.
CAUTION
The use ...
Brakes
If the brakes do not operate properly, have the brakes checked by an INFINITI retailer.
Self-adjusting brakes Your vehicle is equipped with self-adjusting brakes.
The front and rear disc-type br ...
