2017 Porsche 718 Boxster Convertible Top Micro Switch Parts Diagram

The 2017 Porsche 718 Boxster features a sophisticated power convertible top system that relies on several micro switches to monitor and control its operation. These small but critical components send signals to the roof control module, ensuring that each step of the folding or raising sequence proceeds safely. Understanding the micro switch parts and their locations can help diagnose top malfunctions, such as a roof that stops mid-cycle, fails to latch, or gives an error message. This article provides a detailed diagram and explanation of the micro switches involved, along with practical guidance for troubleshooting and replacement.

Overview of the Convertible Top Micro Switch System

The convertible top on a 2017 Boxster uses a series of limit and position switches to verify the state of each movable part. The control module (often called the roof control unit) reads these switches before allowing the next action. For example, the roof will not retract until the rear window is fully lowered, and the tonneau cover will not open until the roof pack is fully stowed. Each micro switch serves as an interlock. When a switch fails or becomes misaligned, the system may stop operation or display a warning. The diagram below shows the main switch locations:

• Left and Right Latch Switches – at the windshield header.
• Roof Position Switches – on the roof linkage (front and rear).
• Tonneau Cover Switches – at the tonneau lid and its locking mechanism.
• Rear Window Switch – near the window regulator.
• Roof Full-Open/Full-Close Switches – along the roof rail.

Types of Micro Switches

Micro switches in the 718 Boxster are typically normally open (NO) or normally closed (NC) and are actuated by mechanical contact. Common types include:

• Roller lever switches – used where a moving part slides along the lever.
• Plunger switches – activated by direct pressure.
• Sealed switches – protected against moisture and dust (important for roof components).

All switches operate on low voltage (5V or 12V) and are wired to the roof control module. Resistance or continuity checks can determine if a switch is functioning.

Detailed Parts Diagram

Below is a component-level breakdown of the micro switches used in the 2017 718 Boxster convertible top system. Note: Part numbers may vary; always verify with OEM Porsche catalog for your specific VIN.

Left and Right Latch Switches

Located inside the windshield header, these two switches detect when the roof’s front edge is properly locked. Often part of the latch assembly (P/N 981.562.111.00 for left, 981.562.112.00 for right). When the roof is closed and latched, a pin engages the switch, sending a closed signal. A faulty latch switch may cause the roof to think it’s not latched, preventing operation.

Roof Position Switches (Front and Rear)

The roof linkage includes two position switches:

• Roof front position switch – mounted on the roof frame near the hinge point. It tells the module that the roof is partially or fully raised.
• Roof rear position switch – located near the rear roof bow. It confirms the roof is fully stowed behind the seats.

These are typically roller lever switches (e.g., P/N 981.613.131.00). If the rear switch fails, the tonneau cover may not close because the module thinks the roof pack isn’t fully down.

Tonneau Cover Switches

Two switches monitor the tonneau (storage lid) operation:

• Tonneau cover open/close switch – activates when the lid is fully open or closed. Often integrated into the lid latch mechanism.
• Tonneau cover lock switch – confirms the lid is locked in place. A common failure point is the switch plunger sticking due to debris.

Rear Window Switch

This switch (often part of the window regulator) signals when the rear window is fully lowered. The roof will not retract unless this condition is met. Rear window switches can corrode from moisture, leading to intermittent faults.

Roof Full-Open/Full-Close Switches

These are end‑of‑travel switches mounted along the roof guide rails. One activates when the roof reaches the fully open (stowed) position; the other when fully closed. They are used for calibration and safety. Symptoms of a faulty switch include the roof stopping before fully opening or closing.

Common Issues and Troubleshooting

Micro switch failures often manifest as:

• Roof stops mid-cycle – possible a position switch not changing state.
• Error message on dash – “Convertible top malfunction” or “Roof not locked.”
• Roof won’t move – multiple switches may be involved; check power and ground first.

How to Diagnose a Faulty Switch

1. Read fault codes using a Porsche-compatible diagnostic tool (e.g., PIWIS, Durametric). Codes often point to a specific switch.
2. Visually inspect switches for damage, misalignment, or debris.
3. Test switch operation with a multimeter: measure continuity when actuated and released.
4. Check wiring for broken insulation or corrosion at connectors.

A common issue on 2017 Boxsters is the tonneau cover lock switch developing a high resistance due to oxidation. Cleaning the contacts can sometimes restore function, but replacement is more reliable.

How to Access and Replace Micro Switches

Replacement procedures vary by switch location. General steps:

• Latch switches – after removing the windshield header trim, unbolt the latch mechanism; the switch is usually held by screws or clips.
• Roof position switches – may require removing side trim panels or the roof pack cover. Use a trim tool to avoid breaking clips.
• Tonneau cover switches – access by lifting the carpet in the storage compartment.

Always disconnect the battery before working on the roof system. After replacement, the roof control module may need a calibration procedure (sometimes done via a scan tool or a manual sequence of opening/closing).

For part numbers, refer to the Porsche PET (Parts and Technical Information) system or contact a Porsche dealer. Aftermarket switches exist but may not have the same reliability; OEM Porsche switches are recommended.

Final Recommendation

If your 2017 Porsche 718 Boxster’s convertible top is acting up, start by checking the micro switches before replacing expensive hydraulic components. The latch switches and tonneau lock switches are the most common failure points. Use a multimeter and diagnostic tool to isolate the faulty switch. For a long-term fix, always use genuine Porsche micro switch parts (e.g., 981 series) and follow proper calibration procedures. If you lack experience, a qualified Porsche technician can diagnose and replace these switches efficiently. Keeping the roof seals and tracks clean also reduces switch failures by preventing debris from jamming the mechanisms.