See also:

When to Check and Change Lubricant
It is not necessary to regularly check front axle fluid unless there is a leak suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired. ...

How the System Works
When the vehicle is shifted into R (Reverse) the front and rear sensors are automatically turned on. After the vehicle is shifted out of R (Reverse), the rear sensors are turned off and the front ...

Safety
The National Highway Traffic Safety Administration gave the 2007 Escalade a five-star frontal crash-test rating; it hadn't done a side-impact test as of this writing. Rollover ratings were listed ...