Skoda Yeti Terminal Ignition Error

Sounds familiar. I had something similar happen with my Yeti. Check the starter solenoid and the relay switch. A voltage drop there can cause issues. Have you checked the wiring harness for damage?

Where is the relay switch located? And how do I check the wiring harness for a voltage drop? Is there a specific tool needed?

The relay switch is usually near the battery or under the dash, check your manual. For the voltage drop, you'll need a multimeter. If you're not comfortable with electrical testing, take it to a workshop. Could save you from causing more damage.

It was a defective cable, like the error memory said. Cost me 95€, but the Yeti starts up fine now. Thanks for the help, I appreciate it.