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.
Sunroof Limit Switch/Sunroof Position Encoding System Switch
The sunroof limit switches/sunroof position encoding system switch tracks various positions of the sunroof glass through its travel between full vent to full open.
The sunroof module monitors the sunroof limit switches LS1, LS2 and LS3 inputs. As a sunroof limit switch closes, the sunroof limit switch circuit, 5 volt reference, will be shorted to the sunroof limit switch low reference circuit, pulling the reference voltage to 0 volts. The sunroof module understands the position of the sunroof glass based on the multiple input combinations to the limit switch inputs. The various inputs allow the sunroof module to bring the sunroof glass to a soft stop when it reaches the full vent, full open or closed positions.
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.