Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Lumbar Control Switch: Description
The lumbar control switch is one of eight separate switches ganged together in driver seat switch assembly. The switch is located on the drivers front door trim panel (Fig 1 ). The driver seat switch assembly can provide up to six resistive multiplexed inputs into the driver door module. The inputs can include memory, heated seat, power seat, and foot pedal system requests. All inputs are hardwired resistive mux to the driver door module to decode axis direction or seat heat level. Refer to Driver Door or Memory Heated Seat Adjustable Pedal Modules in ELECTRONIC CONTROL MODULES for additional information.
The power lumbar switch cannot be adjusted or repaired and, if faulty or damaged, the complete driver seat switch assembly must be replaced.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.