Where are the relays for the air con on a citroen Picasso xsara?

On a Citroën Picasso Xsara, the relays for the air conditioning system are typically located in the engine compartment fuse box. You can find the fuse box near the battery, usually on the driver's side. It's best to consult the owner's manual for the exact layout and identification of the relays, as specific configurations might vary by model year.