[woodcote]

In addition to Henk’s comment, it is worth giving the sensors in the lane changer a regular clean. Mostly that will be giving a good blow of air (lungs, air can, airbrush all work well) to get rid of any accumulated dust, dirt, fluff or misplaced scenic material. To ‘work, the sensor has to have a clear view of the cars’ LEDs. If the dirt is more encrusted, a damp cotton bud (Q-tip) will help. Be gentle.

Another thing that might give intermittent function is ambient light. The sensors really don’t like direct sunlight. If you can shade the sensors - or shut curtains or blinds - that will help. It might be worth adjusting any artificial light, just to be sure.

Otherwise, your care of joins and regularly cleaning will all help keep things trouble free. I reckon it’s a sensor issue - most likely dirt or light or a bit of both. My experience is lane chargers are not 100% trouble-free, but I’d hope for significantly better than 90%. Any problems should be limited to driver or car error.