Jura j5 keeps indicating beans need filling once a button for coffee has been depressed. then indicates ready again. Beans are full and I have tried blocking off the sensor (beans full) but still the same issue.

Is the grinding compartment clean? please suck out the whole grinding compartment with a vacuum cleaner and put the grinding size to maximum size. Try again afterwards.

It is wanting grounds dropped into the trap door on top. If you open that trap door there is a sensor on the hindge that causes it to expect ground coffee to be dropped in there. This is how you would make a decaf cup with caffeine beans in it or flavored with regular bean in the grinder.
Check to make sure the door is closed. It should return to "ready" in about 10 seconds. If not cycle the power by pushing the on/off button or pull the plug.
Instructions can be found here:
https://www.capresso.com/customer-care-instruction-booklets.shtml

Is it a J5 or Z5? Either way, you need to use fresh coffee beans with the coffee machine.

Trouble shooting guide is here:
Jura Coffee Machine

Mine just started doing the same thing. I've always only used plain espresso beans. Only thing is I may have overfilled the hopper and packed the beans down a bit. How can I make it start grinding again?

The switch or photo sensor is not sensing any beans present.
So it can't continue
Use torch to inspect bean entry area
Small brush etc

Same thing happening to me right now. I think this has something to do with having used flavored beans (which I was warned not to do). Supposedly they gum up the machine.

Hi
Oily beans (shiny) can some times stick together after grinding with a fine setting. Try opening the grinder setting to the very coarsest setting and see if it will clear the passage. If you have pushed the brew button an lot of times you may have packed the grounds in the passage which will have to cleaned manually.
Once you have the grinder working again, open it to the coarsest setting to clean the burrs. 1 time is enough. To turn the grind setting back down to your setting make sure that the grinder is running at that time. You can open to a coarse setting any time but it has to be running to finer.

The Touchdisplay is defective. You need to send the machine to service to have the display changed.

I had a similar problem, and solved it by turning the grinder by hand against resistance. Apparently the grinder wasn't really turning during the cycle and needed to be cleared. If your beans are "hopping" this may be a different problem.

You need to open the grinder, it`s probably packed with old fine powdered coffee that blocks the outlet. Clean this out and try again. Since it works normal when you use pre-ground coffee, there shouldn`t be any problems with any other parts.

Let me know if you want a description for have to open and clean the grinder.

Good luck!