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.
Sun Roof Module (SRM)
The Sun Roof Module (SRM) regulates the sun roof motor with the help of software. This software regulates pinch protection, calibration and drive mechanism movements.
- Pinch protection is a safety requirement to prevent anyone from getting injured when the sun roof is closed. Maximum closing force up to 50 km/h (30 mph) is 100 Nm. Over 50 km/h (30 mph), the closing force is adjusted based on vehicle speed to compensate for wind resistance.
- The sun roof is calibrated by opening the glass panel to its end position (completely open), which is then set as its zero position. The Sun Roof Module (SRM) must be calibrated for the panel to be able to find its main positions and for the pinch protection function to be active. The sun roof must be calibrated each time it has been disassembled. Calibration is performed following the information in VIDA under Repairing/Cleaning, checking and adjusting.
The following are the main glass panel positions programmed in the Sun Roof Module (SRM):
Tilted position
Closed
Open
Comfort position
The Sun Roof Module (SRM) determines the positions using a slotted gear wheel and two light sensors. These measure the number of gear wheel revolutions, which is proportionate to glass panel displacement.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.