Yes, there is a special seat designed for truck drivers who need lumbar support. You can purchase one at www.freepatentsonline.com/4139235.html.
The lumbar components are located inside of the back of the seat. You will need to remove the seat, then take the back cover off to see what is wrong with the lumbar support an repair it.
The knob adjusts the lumbar support in the driver's seat back.
The Toyota RAV4 is known to have lumbar support in the passenger seat in some of its trim levels, such as the Limited and Adventure models. It is important to check the specific trim level and features of each vehicle to confirm the presence of lumbar support in the passenger seat.
Unfortunately, and believe me it is very unfortunate....You have to buy a new seat back; yes, the whole frickin' thing, from a Chrysler dealer for about $1,100.00. Shocked??? So am I. All it needs is a little plastic mechanism inside the seat that is held in by a roll pin. My suggestion is this: Find a used passenger seat (passenger because it is used less) and get the mechanism from it. I paid $340.00 for a used seat and all I wanted was the plastic. Honestly, this is rediculous. The part or at least the lumbar set up should be available seperately!!!!
I was looking at the 2011 Ford Crown Victoria Owner Guide and it shows : The power lumbar control ( if equipped ) is located on the front seat " inboard " side
Move seat back, remove bolts at the front of the chair slide rails. Then move the seat forward and remove the bolts at the rear of the seat slide rails. Disconnect control connections (Lumbar, heater etc)
Brookestone is a great place to purchase comfortable seat cushions. They sell cushions with lumbar support and Tempur-Pedic material. The seat cushions come in various sizes, colors, and material.
owners manual states that The rear fuse block under rear seat -position # 5 controls Mem Seat Module, Drivers Seat Switch, Drivers Lumbar SW Gently pull up on front of rear seat cushion to release front hooks and lift up and out forward. Be careful not to damage fuse center
Look for a car with adjustable lumbar support in the seat back. You will find that luxury cars normally have the best seats. Go try some out and see for yourself.
Place your hand on the bottom outside of the seat, the last round button adjusts the bolsters and lumbar support.
Its under the car right under the drivers seat. how do we fix/replace/repair it