Garmin G1000 Nav III Error GRS1

G1000 Nav III · taken from the manufacturer’s manual, pages cited

Error codeGRS1

The system has detected an incorrect software version loaded in GRS 77 or the GMU 44 indicates a software mismatch in these components, requiring updating to the correct version. The manual's first action is: “Load correct software version in the GRS 77 and GMU 44.”

Model
Garmin G1000 Nav III
Display shows
GRS1
Type
Error code
Source
Manual p. 85

What GRS1 means

The system has detected an incorrect software version loaded in GRS 77 or the GMU 44. p. 85

Common causes

  • The system has detected an incorrect software version loaded in GRS 77 or the GMU 44. p. 85

What to do

  1. Load correct software version in the GRS 77 and GMU 44. p. 85

Before you service the product, read the safety instructions in the manual p. 4.

If GRS1 is still not resolved

  • Contact service / dealer p. 3
    “KEEP AWAY FROM LIVE CIRCUITS. Maintenance personnel shall ob serve all safety regulations at all times.”
  • Contact service / dealer p. 127
    “Loading the wrong software into GIA63/63W units may cause an inoperable condition that is not covered by warranty .”
Open the manual at page 85 All G1000 Nav III error codes Manual details & download

This page summarises what the manufacturer’s manual says about GRS1; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Garmin. Found a mistake? Report an error.