See also:

Onboard Diagnostic System — OBD II
Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. ...

On the Road
Automakers are getting better at finding middle ground between the extremes — nimble handling with reasonably good ride comfort, for example. The Wrangler is old-school; it swings unapologetical ...

Sentry Key
The Sentry Key Immobilizer system prevents unauthorized vehicle operation by disabling the engine. The system does not need to be armed or activated. Operation is automatic, regardless of whethe ...