We had a crane job lifting trusses Thursday. All our other operators were busy so it was up to me. Thought I’d break in the new crane. Was backing it down the drive and it alarmed. All 5 steering modes were flashing green. It went into a limp mode only driving 20 mph. Shut it down to let it reboot. Finally gave up and took the old 60 ton Grove. Luckily a Liebherr tech was coming by for final paper work, so I called him. When he got there all the alarms were gone. History said it was a steering sector.