One repeater can control multiple cars and openers; if all vehicles in the garage are HomeLink®, only one HomeLink® repeater is needed. If all vehicles are Car2U, only one Car2U repeater is needed. Both repeaters are required if different vehicles sharing the same garage have systems made by both interior suppliers. Consult your vehicle owners' manual if you are unsure of the system installed in your vehicle. HomeLink® Repeater Kit HomeLink® is available in many brands of vehicles, and is identified by a single red LED and 3 buttons; some models may have a "house" image on the panel. On mirror applications, the house may be absent but there is still just one LED. Most older vehicles and select newer models will need a repeater to upgrade the vehicle to be compatible with the new Security+ 2.0TM radio code. Gentex Corporation has a website to determine vehicle compatibility; go to www.homelink.com and follow the steps to program a vehicle to see if you need the kit. Sample HomeLink in-vehicle system Sample HomeLink in-vehicle system Programming HomeLink-equipped Vehicles to Older LiftMaster® Garage Door Openers & Gate Operators To program older LiftMaster garage door openers (manufactured prior to 2011) to your HomeLink-equipped vehicle, visit www.homelink.com and follow the instructions. Car2U Vehicles Select 2007-2013 GM & Ford vehicles may have Car2U remote systems manufactured by Lear Corporation, identified by three yellow LED lights, one above each button. The HomeLink® repeater will not work with this system. A Car2U repeater purchased from Lear is required for all vehicles. Contact Lear at www.learcar2u.com or at (866) 572-2728. Sample Car2U in-vehicle system Sample Car2U in-vehicle system