Chosen Solution

I’ve a buttons that controls the back seats , one of the seats are stuck and can’t move at all , it makes a clicking sound when I try to lower it down

I have no idea about cars but give this a try. See if there’s anything blocking the seat from moving. Seems simple but even a spec of dust can annoy these electronic seats. Also check fuses as some of these seats are driven by two small motors instead of one and a single motor doesn’t have the power to push the seat forward and backward on its own. Also, give the mechanism a little bit of WD40! Oiling parts of something as old as this may surprise you! Otherwise, I wish you good luck on repairing the seat!