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.
2003 Porsche Boxster (986) F6-2.7LFACTORY OEM SERVICE PROCEDURE
Transmission Position Sensor/Switch: Service and Repair
Removing and installing multi-function switch
Removal
1. Hold engine by transport shackle in installed position with special tools 10 - 222A and 9591/1.
2. Remove the left catalytic converter.
3. Detach selector lever cable from deflection lever and transmission support.
4. Place transmission jack under the transmission.
5. Remove the left transmission support with hydraulic mount.
Note The fastening nut M12 (C) must not be loosened. The transmission support will otherwise be damaged.
6. Release and disconnect cable connection to multi-function switch.
7. Unscrew fastening screws and pull switch off the selector shaft.
Installation
Install in the reverse order.
1. Put multi-function switch on the selector shaft. The flat point on the serrations in the switch (3) must lie against the flat point on the selector shaft (1).
Note Place multi-function switch on the selector shaft. Do not tilt or use force: you may damage the switch contacts.
2. Turn switch until the fitting bore (4) can be put on the dowel pin (2) on the transmission housing.
Factory Service Tools
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.