Conditions for Enabling Cruise Control

WARNING: This page is about a different car, the 2005 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle speed is greater than 40 km/h (25 mph).
The vehicle is not in PARK, REVERSE, NEUTRAL, or 1st gear.
The system voltage is within 9-16 volts.