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KevinH1990 · 11-02-2015, 04:33 PM

I think you may have posted on Rennlist and I provided a response on that forum. If that was you, you didn't mention that both the window and seat heater switches weren't working. Maybe someone spilled something there and the switches are gummed up.

If cleaning the switches as suggested by Mark T doesn't work, there are several other possibilities. The next thing I would check is the Control Unit Seat Heater (Relay) under the seat. You could swap the relay from the passenger seat since you know that works. You can also swap the switches from the passenger to the driver's seat to rule out a problem with the switch.

This article on retrofitting OEM seat heaters contains detailed information including diagrams and part numbers regarding the design and operation of the seat heaters: Dennis Vogel: Projects - Boxster Heated Seats

Here's the diagram showing the control module: http://www.dennisvogel.com/heatedsea...eatharness.gif

11-02-2015, 04:33 PM	#3
KevinH1990 Registered User Join Date: Feb 2006 Location: Virginia Posts: 1,659	I think you may have posted on Rennlist and I provided a response on that forum. If that was you, you didn't mention that both the window and seat heater switches weren't working. Maybe someone spilled something there and the switches are gummed up. If cleaning the switches as suggested by Mark T doesn't work, there are several other possibilities. The next thing I would check is the Control Unit Seat Heater (Relay) under the seat. You could swap the relay from the passenger seat since you know that works. You can also swap the switches from the passenger to the driver's seat to rule out a problem with the switch. This article on retrofitting OEM seat heaters contains detailed information including diagrams and part numbers regarding the design and operation of the seat heaters: Dennis Vogel: Projects - Boxster Heated Seats Here's the diagram showing the control module: http://www.dennisvogel.com/heatedsea...eatharness.gif __________________ 2000 Arctic Silver/Black, Hard Top, On Board Computer PNP Rear Speakers, HAES 6-Channel Amp, Avic Z140BH, Painted Bumperettes, 2004 (OEM) Top, Homelink integrated in dash with Targa switch, 997 Shifter, Carrera Gauge Cluster with silver gauge faces, heated 12-way driver & 8-way passenger seats, Litronics, silver console Last edited by KevinH1990; 11-02-2015 at 04:36 PM.