Date: Wed, 25 Jul 2001 21:11:25 +0200
From: Mats <>
Subject: Re: 900 Seat Heating

The adjustable and switchcontrolled seat heating was introduced on earlier models (my 88B had it). Converting thermostat controlled to adjutable is rather difficult, you need a switch, a sensor to put in the seat and some wiring. The thermostat is located in the seat, if you feel over the seat you should be able to sense it. The easiest thing for you to do is to put an extra switch in one of the spare holes in the panel, and cut the wires under the seat and route them through the switch, use rater thick wire, the current is about 5 Ampere. If you donĄt want the switch in the panel i think there is an opening for an extra switch in the centre console too, it should be vacant if you donĄt have an electric sunroof. /Mats On Tue, 24 Jul 2001 02:05:52 GMT, Warren Pattinson <> wrote: >My '92 900i has what appears to be thermostatically controlled seat heating - with no visible means >of switching it off. I understand later models had a rheostat fitted for temperature control, plus a dash >switch that could select off and on. > >Now, its winter here, and the seat heating is fine. But I would like the option of over-riding any >thermostat thats in control of my butt temperature. Apart from disconnecting the cables under the >seat, is there any simple way to cut the power? Where is the thermostat located? Better still, can I >update to the later switchable version? > >Any help appreciated.

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