Is there a Haynes Manual for the 1.0L Seat Ibiza, 2000 version?

That unit appears to have 'issues'. Try resetting it again.

https://www.google.com/search?q=alana+mp3+aux+mode+not+working

What size motor and year?

If the fault detection circuit senses a voltage other than what is expected, the fault line status will change causing the P0650 code will set
Read more: http://engine-codes.com/p0650_pontiac.html#ixzz3KBuUP8Qv

Cause the clutch pressure plate is worn out.

don't worry be happy . start to worry when it causes you a problem

change the battery in the fob first.

I can't find a Haynes or Bentley listing for a SEAT. However, try going to vwvortexforums. Click on the "technical forums" and on that page you will see a sub forum for SEAT. You can read and search these forums without joining or signing in. If you want to ask questions you will have to join, it takes anbout 5 minutes and no money and you can ask questions right away.

Check for low coolant or rusty coolant as well as a defective engine coolant thermostat being stuck open and the engine not reaching proper operating temp. You can also have a problem with the door that controls hot and cold air to the cabin, it is called the air temperature control blend door.

On this website you find fuse box diagram and description for Seat Ibiza

https://www.autogenius.info/category/seat/seat-ibiza/

How I fixed the central locking seat ibiza 2001