That sounds like a really concerning issue with your front driver's seat. Since it's an intermittent problem and seems to be related to electrical issues, I'd recommend having a professional mechanic or auto electrician take a closer look.

In the meantime, to prevent any further mishaps, you might consider disconnecting the power supply to the seat until the problem is resolved. Additionally, installing a gel seat cushion could provide some temporary relief from the discomfort caused by the seat's erratic movements.

The best gel seat cushion can offer added support and comfort during drives, and it's a simple solution that you can implement right away. Hopefully, with the help of a skilled technician and some added comfort from the gel seat cushion, you'll be able to address this issue and ensure the safety of both yourself and your passengers.

Take care, and I hope you're able to get this problem sorted out soon!

 

If only the driver's seat is doing it, looking at the wiring diagram I would point at possibly a bad ground or water ingress into the seat control module.
Might be something as simple as disconnecting the wiring plug and reconnecting to clean the connections up.

(However, if the radio comes on and starts playing Bony Moronie, sell the car as fast as you can).

Joking aside, it a bad ground to the control module making the servo position sense go weird is a good possibility. The seat is "live" all the time.

Phil

 

I would first ensure that you don't have the easy exit/entry switch set to on (switch that moves seat); then I would do a hard battery reset (pull the negative cable, touch to positive post -- drains all capacitors).

 

I had this same issue. It was the drivers seat module. Failed completely eventually which wouldn’t allow me to recline the seat. Once I replaced the module it stopped the jerking back and forth issue.

no programming needed just match up part numbers from a good used one.

 

I would bet this shop has never heard of a lot of things before.