Electric drivers' seat chair will not move

Hello,
This is likely an issue with the power
seat motor that controls the back-and-forth motion.
This power seat has four motors for different functions.

So, the issue could be a bad motor, or it could be a wiring issue, like a broken wire or corroded connector.

Since the Magna was not sold in the US, I do not have diagrams for the motors.
But those motors are located under the seat.

You will have to locate the motor and check to see if you are getting power to it. If there is power, then it is a bad motor.

https://www.2carpros.com/articles/how-to-check-wiring

Here is a wiring schematic for your reference.

Please let me know of any questions.
Thank you.