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What is an Onboard Diagnostic System (OBD II)?
OBD II is part of your vehicle's computerized engine management system. It stores diagnostic information about your vehicle's emission controls. It can light the Check Engine light (MIL) if it ...

Replacing the batteries
CAUTION When handling batteries, avoid touching their contact surfaces as this could result in poor battery function in the remote key. 3 Note the position of the battery's (+) or (–) sides. ...

Using HomeLink
To operate, simply press and release the programmed HomeLink button. Activation will now occur for the trained device (i.e., garage door opener, gate operator, security system, entry door lock ...