This is the zigbee presence fob?
Garages can be quite difficult to get a signal through. Many people find it helps to put a zigbee repeater in the garage to boost the signal. The gen 1 motion sensor will work for this if you keep it plugged in.
Or a zigbee repeater in another front facing room near a window may help.
Note that smart bulbs mostly don’t act as repeaters except for other bulbs, but one member reports the Osram Lightify bulb does.
See this topic for more details: