I've just had the same issue with an Octavia IV vRS wagon. I was approaching the vehicle and about 10m away when the alarm started sounding. The alarm continued sounding for about 20-30 seconds, then stopped for maybe 5 seconds, then started again. Rinse, repeat, for about 10 minutes in total. Nothing I tried would stop it, including repeatedly locking and unlocking the car, popping the hood, and starting the car - it just continued while the engine ran! I was on the phone to Skoda Assist when it finally stopped, not because of anything I'd done.
A roadside mechanic later inspected the car and provided me with a list of faults he pulled from the OBD II. They include:
- 4 faults with engine control module 1
- 1 fault with the transmission electronics
- 4 faults with the brakes
- 2 faults with the air con
- 3 faults with "electronic central electric" (whatever that is)
- 4 faults with the instrument cluster
- 4 faults with the "gateway"
- 2 faults with the brake booster
- 1 fault with the steering column locking
- 1 fault with the passenger's door electronics
- 2 faults with information electronics 1
- 2 faults with parking assistance
- 1 fault with front sensor for driver's assistant systems
- 2 faults with "interface for access/start system"
- 1 fault with door electronics rear passenger side
The car is 22 months old, has never been in an accident, and has done 8k miles / 13k km.