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
Seat Temperature Control Module: Service and Repair
Removing And Installing Control Module For Seat Heating
Removing and installing control module for seat heating
The control module for the seat is located on the right side for the driver's seat and on the left side for the passenger's seat.
- -A- Backrest plug connection.
- -B- Seat cushion plug connection.
- -C- Plug connection for seat heating control module.
- -D- Expanding rivet.
1. Removing control module for seat heating
1.1. Refer to Removing and installing front seat.
1.2. Press the pin into the expanding rivet -D- with a thin screwdriver for example and remove the holder together with the rivet and the control module.
1.3. Pull control module off the plug -C-.
2. Installing control module for seat heating
2.1. Push control module onto the plug -C-.
2.2. Fix the control module and holder with the expanding rivet -D- and press the pin in the rivet.
Seat heating line route
- -A- Plug connection for backrest heating element.
- -a- Press plug for backrest heating element together -arrow- and pull from the plug connection -A-.
- -B- Plug connection for seat heating element.
- -b- Push plug for seat heating element onto -B- until the plug connection engages.
- -C- Base for seat heating control module.
- -D- Connection for seat heating wiring harness for the central plug.
- -E- Power supply, plug for central plug.
Central plug
- -A- Coding pin: In the Boxster in opening 2, in the 911 Carrera and 911 Turbo in opening 5. Pin BR opening 6, pin RE/VI opening 3.
- -B- Slide in lock-in position.
1. Removing coding pin and pin
1.1. Refer to Removing and installing front seat.
1.2. Pull slide -B- in -direction of arrow 1-.
1.3. Lever out fuse -arrow 2- with a small screwdriver and remove completely.
1.4. Pull out coding pin -A- with pliers. Press pin out of flat connector using press-out tool.
2. Installing coding pin and pin
2.1. Insert coding pin -A- and pin into the flat connector until it engages.
2.2. Insert fuse -2- in -direction of arrow- until it engages.
2.3. For seat installation: Insert counter plug into vehicle and push in slide -B-.
Removing and installing pin housing for seat heating and belt buckle
- -C- Seat heating pin housing
- -D- Belt buckle pin housing
1. Removing pin housing for seat heating and belt buckle
1.1. Refer to Removing and installing front seat.
1.2. Cut tie wrap on rear side of central plug with side cutters.
1.3. Push fuse -2- away from flat connector in -direction of arrow 2-.
1.4. Pin housing: Push out the belt buckle -D- and seat heating -C- in -direction of arrow 1-.
2. Installing pin housing for seat heating and belt buckle
2.1. First insert the seat heating pin housing -C-, then the belt buckle -D- into the flat connector.
2.2. Push fuse -2- onto the flat connector.
2.3. Observe the line route and secure with tie wraps on the rear side of the flat connector.
Tools
Test plan for the seat heating
In the case of the complaint "seat heating does not function", proceed according to the following work instruction. Work aids: Use wiring diagram and multimeter.
Factory Service Tools
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
