code JEEP CHEROKEE TRAILHAWK 2018 Owners Manual

•Push the LEARN button on the Garage Door Opener to
complete the training for a Rolling Code.
• Did you unplug the device for programming and re-
member to plug it back in?
If you have any problems, or require assistance, please call
toll-free 1-800-355-3515 or, on the Internet at
HomeLink.com for information or assistance.

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 transmission
control systems. When these systems are operating prop-
erly, your vehicle will provide excellent performance and
fuel economy, as well as engine emissions well within
current government regulations.
If any of these systems require service, the OBD II system
will turn on the Malfunction Indicator Light (MIL). It will
also store diagnostic codes and other information to assist
your service technician in making repairs. Although your
vehicle will usually be drivable and not need towing, see
an authorized dealer for service as soon as possible.