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.
Position Sensors
Position sensors are used by Memory Seat Module (MSM), Door Control Modules (DCM) and steering column Tilt/Telescoping Module (TTM) to store motor positions in memory and return motors to stored memory positions. On power seats, each sensor is a potentiometer, and is mounted to each motor's transmission cable. When cable rotates, resistance of potentiometer varies, and feedback voltage is monitored by MSM to determine motor position. Feedback voltages vary from 0.25 volt to 4.75 volts.
The MSM, DCM or steering column TTM store motor positions by recording each position sensor feedback voltage. When a memorized position is requested, each motor is moved until position sensor feedback voltage equals feedback voltage stored in memory. For Easy Exit functions, seat position, power mirrors and steering wheel sensor feedback voltages are recorded.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.