Well im not entirely sure what the switch is there for, as it seems to serve two purposes!
Now, it is a owner mod, although i dont think it was the last owner as he said its to switch off the interior alarm sensors when leaving pets in the car. Which i thought was odd as there is already a dash button for that isnt there, but i didnt question it.
It has been to a Citroen speciliast for its hydraulic bits, spheres etc, its one which i dont like much as they dont seem to know what they are talking about. However im not sure if this aftermarket switch is anything to do with them, to cover up a suspenion ECU problem. Or if its something to do with the alarm but the person fitting it has maybe taken the live feed from the wrong place. Ive no idea, will need to investigate.
Ive just had a look in the ECU box and it does have the e-crofting fixing kit installed. I think i remember right that the fixings on the e-crofting kit were changed for some other type of electrical connectors. This one fitted has the later type of connectors, so i wouldnt have thought it would have been fitted that long.
The car was owned by Citroen for what seems to be the first two years of its life, although it covered very very very few miles in that time! It was then bought by a private seller who must have had a very small yearly mileage, they had it until last year when it was traded into a Citroen dealer where its last owner bought it from.
I tried to explain to the seller about the suspension being firm but he didnt seem to understand it as he had spheres fitted so thought all was well. The switch was in the down, or locked into sports, when i collected it, so it seemed very harsh.
So, with the switch in the up position, everything seems to work fine, its in soft most of the time but it does seem to go into sports when it needs to, and the sports mode works fine, with the orange light lighting. So switch up and its like a normal Xm should be, however put the switch down and things go odd.... With the switch in the down position its locked into sports all of the time. The orange light does not light but the little dash warning thing does say sports suspension when i select sports. This is what iver gathered from a short test drive this moring, ive not been out in it again yet.
Now here is the bit i dont understand, with the switch up the alarm works and the indicators flash when locking/unlocking. With the switch in the down position the alarm doesnt work and the indicators dont flash when locking or unlocking by the remote. So it effects the alarm and the suspension
On the plus side ive sorted out the buzzing noise from the little fan in the roof, the thing which i guess tests the cabin air temperature. Just removed it, sprayed it with some electrical cleaner, let it soak in, ran the fan a few times and its now silent. Which is better as that was annoying.
The stiff height level was not down to lack of maintenece but the little plastic slider which surrounds the knob for raising and lowering the car, the slider was not in the channel under the gear gaitor plastic so was very stiff to move. I put the plastic slider back where it should run and it now works as it should.
hobblerian: I think originally it was 72000 miles, although there will have been an age limit also, not sure what that was but im sure its less than 14 years

So im not going to use the car much until it has its new cambelt and waterpump, should be next week hopefully, as long as the garage can fit it in.
Ill go take some pictures ...
Chris.