My seat ibiza radio keeps turning itself on and running the battery down

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

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lots of seat ibiza 1.2cc for sale ..going cheap

is the check engine light on

try clearing any fault codes
with radio code in hand
disconnect the battery terminals for a bit

then reconnect
see if it starts ,idles and is not in fail safe

if no better a diagnostic reader will be needed

you may need an used engine computer

A wire behind it is disconnected somewhere sounds like or its played out.

Check alternator charge rate and earth straps

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

you probably have a short in the amplifier under the driver's seat. I had the same problem. Bought mine used, but the amp had water damage due to the vents for it on the left side of the driver's seat letting in water, probably snow or something that fell in there. Was $1200 to replace. Basically your car will be fine for a couple weeks, maybe a month then the battery will die.

Hello! The trouble code is telling us that the voltage to the Camshaft Positioning Sensor (CMP) is low...The connector that plugs into the sensor could be open, the sensor itself defective or low battery input to the sensor...See diagrams below as to sensor location...Lets eliminate...The wire colors in the CMP plug are...Pink...Black/White...And Light Blue/Black...If you connect a voltmeter to the Pink wire you must read 5 volts...Push a safety pin into the rear of the in-place connector into the Pink wire so it contacts the pin that the wire is crimped to...(+) probe of meter clipped to that pin and (-) probe to bare metal chassis ground...Key on...Meter set to read 5 volts...If 5 volts is present that eliminates a battery fault...Next push the safety pin into the Light Blue/Black wire...Turn on key...(+) probe to that pin...Should read about 2.4 volts...If you read nothing, or less than 1 volt the sensor is defective OR the connector pins to it are fouled...Pull plug and inspect both male/female pins for oil...corrosion...etc...Radio Shack sells a product called DeOxit...It's the best (no touch) spray contact cleaner...Send results...PS...Best meter to use is a digital one...$20...Guru...saailer
Remove engine cover:

CMP at top of drawing with timing chain cover removed for clarity...

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Thanks for choosing FixYa and welcome. You need to check your radio fuse first. It may have blown. If it hasn't, you may need a radio code to unlock it, say if you have lost power to it due to a battery disconnection. If not, you need to check the wires in the back of the radio. They may be damaged or they might have just came loose.

That is a false statement

You can put an Ampere Meter on it, when it is running

You can look at the motor running with an Oscilloscope

You can check Fuel Pressure & Fuel Volume

Your problem has nothing to do with cranking
Cranking is the starter turning over the motor

You have a no start condition, due to lack of fuel pressure

Now you see why I never recommend a dealer
Why would a professional tell you that stuff?

You have a complete fuel pump circuit with other items
that can be checked

You could install a new pump & hope that is the problem,
but if it took 6 months to come back I doubt it

Ive got the radio problem, having to remove the radio fuse each time I get out of the car - its the blue 15amp on the top row of the fuse board. As for fixing it, heard its either down to the radio switch or diode? Taking mine to garage though.