POWER STEERING NOT WORKING, NEITHER ARE THE FRONT HEATER AND BACK WINDOW HEATER WORKING. WHAT IS THE PROBLEM, AND HOW TO SOLVE???

have it checked at your citroen dealer,prob ignition switch faulty,you will have to get the keys coded when they replace the ing switch on the diag machine

All three items will draw a high current so maybe there is a Maxi fuse blown under the bonnet . Also you could have a en electrical conection burnt out . l recommend that if you are not sure on what you are doing you seek help from an Auto Electrician . If you live within twenty miles of the OL6 Postcode l could come out to you my charge for One hours labour is £30.00 . Email me back if you require further assistance.