2016V70 SE with power lumbar support driver's seat. Failed under warranty and repaired . Garage said "puffer motor"? 3 years later and now out of warranty and it's failed again. I believe power is present at the switch. Can anyone tell me how it works and how to access the motor for repair or replacement? I'm hoping it's low down in the seat back and I'll be able to move the cover up far enough to get to it.
Thanks
Dave

 

No ideas? I can't be the only one, surely