Overview
Symptom: Engine cranks with no start condition; sporadic instrument cluster behavior.
Primary Cause: Fractured and corroded (0.35mm²) bl/ge wire in the engine bay harness causing intermittent Terminal 15 main power relay drop-out to the ECM.
The Fix: Find the offending wire in the harness, behind the battery area, open the harness at that point and repair with a soldered joint and wrap in waterproof heat connector shield. Re-tape harness and re-route/secure it in place.