The model 8500 is compatible with new Security+ 2.0 remote controls. The model 8500 comes with either the 888LM or 889LM myQ Control Panel. There are two causes that may be the problem with programming to a model 8500.
The compatible accessories are the 895MAX, 893MAX, 893MAXMC, 890MAX, 890MAXMC, 891LM, 893LM, 877MAX, 877MAXMC, 878MAXMC and 877LM.
Compared with other models, the learn button is not on the opener itself, it is on the myQ Control Panel. The learn button on the opener is used only for setting the travel limits and force.
To program the 891LM/891LMMC or 893LM/893LMMC remote control, locate the learn button on the control panel by flipping up the push bar.
To program the 893MAX/893MAXMC remote control, locate the learn button on the control panel by flipping up the push bar.
To program the 895MAX/895MAXMC or 890MAX/890MAXMC remote control, locate the learn button on the control panel by flipping up the push bar.
To program the 877LM/877LMMC keyless entry, locate the learn button on the control panel by flipping up the push bar.
To program the 877MAX/877MAXMC keyless entry, locate the learn button on the control panel by flipping up the push bar.

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