Koleos Terminal Ignition Interrupted

Whoa, 'Terminal 15 ignition positive interrupted' sounds like German engineering snuck into your Renault! Seriously though, a dodgy connection is super common. Before you start ripping apart wires, have you checked the basics? Is your battery actually putting out enough juice? A weak battery can cause all sorts of weird electrical gremlins. And double-check all the fuses related to the ignition system. A blown fuse is way easier (and cheaper) to fix than a frayed wire. Good luck!

Thank you for your response. I appreciate the suggestion to check the battery and fuses; I will certainly examine those components. Could you perhaps elaborate on which specific fuses I should be inspecting, or how I might ascertain whether the battery is providing sufficient power? I want to eliminate all simple solutions before proceeding with more complex troubleshooting.

I can only give you a general direction, I am not a Renault expert. But based on your error I would not bother checking the battery, I would really go to the workshop and let them check the cables to the starter solenoid and ignition switch. It is most likely a defective cable or a broken plug. It will probably cost you around 95€.

I wanted to extend my gratitude for your guidance. Following your advice, I decided to bring the vehicle to a workshop. The mechanics identified a defective plug connection, which they repaired, and the engine now starts without issue. The final cost was indeed approximately 95€, as you predicted. Thank you again for your assistance; it was most helpful.