What do I need to look out for when implementing auto bed leveling?

What do I need to look out for when implementing auto bed leveling? I have all of the mechanicals done. I am mainly concerned about the software. Using a Mega2560 and Ramps 1.4.

Do you have a retractable probe?

One easy mistake is to aktivate the probe (homo z or autobed level) when z is to low to deploy the probe.

Yes. A retactable probe.

@Jason_Clark we put the z home at the beginning of the print. Before x & y homing then g29. Solves the timeout issue. Not sure why they don’t add that in software

Ok. I got the auto bed leveling routine running. BUT it prints towards the front of the bed… not the center. Any Ideas?