Citroen XM Forum

...but the problem remains on the second one, there is a leak on and off and if I put silicone in the corners and looked at everything carefully, the leak is again in the same place, I don't know where it could be, it's some kind of double sheet.

The corner leak will be either where the corner window meets the top of the D pillar, the tilgate lifter strut lower fixing, or the seam near the tailgate lower strut mounting.

You need to fix any leaks from the outside, otherwise water will build up in the panel. This means you need to remove the spoiler and refit it on some mastic.

I put silicone in the corners and on the screws on the spoiler, but water appears again in the same place.
...it is not clear to me where the water is coming from in this place, it is some kind of double sheet.

It's possible for the sealant at the top of the quarter glass to leak water into the D pillar.

Starting low down play a hose, or watering can over the car, moving upwards until you reach the point it is leaking in.

...for now I'm not touching anything else, it's cold, I took the carpet and upholstery out of the trunk and I'll drive it like that until the weather gets warmer. Maybe in the meantime someone has a solution where to release the water.

..it's never boring who has XM, my airbag light flashes and after some time it stays on, did he have any problem with that warning.

Try reading the codes, but the issue is probably the yellow connector under the passenger seat.

..yes I will check those connectors, the weather is bad at the moment, maybe there is a problem, there is also a CD player under the passenger seat.

I finished with the choice of tires, I decided to get tires for all seasons
The airbag warning no longer lights up, the error has fixed itself.

...a good, high-quality Bosch PK belt , yesterday I heard some unusual sound in the engine compartment, there is nothing to see, the PK belt was completely stretched, and it is quite pressed, the whole 5000 km . Now I took a Continental one, to see how much he will charge
...I thought that some spanner was not stuck, something moved and the belt broke because of that, everything is in its place.