I would have the QC checked, something is wrong with it, probably a bad or corroded connection. The GPS coordinated is acquired via a combination of cellular and satellites. The unit needs to be serviced, hopefully they can swap out the antenna fast and resolve it, if it is the wiring you could be there a while as they just replace it, the harness comes from QC and is cheaper to replace than repair.
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Yes!! This ^^^ ha ha with all the new construction going on there, I don't even bother. I just ignore Navigo and follow the signs and she eventually catches up to me and gets back on track.
OOS:
When a violation by either a driver or company is confirmed, an out-of-service order removes either the driver or the vehicle from the roadway until the violation is corrected.