Vauxhall Vectra air bag light on

Could check connections under front seats .

tks whittingehame i have tryed what you said it is not that have looked at the fuses thay are ok

According to this , it's fuse f10 for horn ? Could double check . Copied from another forum:- Pre Facelift fuse No F 1- spare F 2- 30A-air con/cooling fan F 3- 40A-rear heated screen F 4- spare F 5- spare F 6- 10A-RH dipped beam/headlight levelling F 7- 10A-RH parking light/tail light F 8- 10A-RH main beam F 9- 30A-headlight washer F10- 20A-horn F11- 30A-central locking F12- 20A-front fog lights F13- spare F14- 30A-windscreen washer F15- spare F16- 10A-rear fogs F17- 30A-elec windows F18- 10A-number plate light F19- 20A-fuel pump F20- 30A-elec windows F21- spare F22- 20A-hazard warning lights/info display/trip comp/air con/ Interior light/cooling fan/infotainment system F23- spare F24- 10A-LH dipped beam/headlight leveling F25- 10A-LH parking light/tail light F26- 10A-LH main beam F27- spare F28- 20A-coolant heating(diesel ) F29- 10A-hazard lights/elec mirrors/elec windows/sunroof/instruments/ cruise control/interior light F30- 30A-sunroof F31- spare(also been known to be the cigar socket worth a look socket not working ) F32- 10A-daytime running lights(scadinavia) F33- 10A-constant supply for tow socket F34- 10A-cd player F35- 10A-ABS/traction control/auto box F36- 20A-air con/heated seats/cigar socket F37- spare F38- 10A-stop lights/reverse lights/auto trans/cooling fan/ tid-mid display/cruise control F39- 10A-auto trans F40- 10A-cooling fan/air con/heated rear screew F41- 10A-heated mirrors Facelift fuse No as above with the following changes F 6-15A F13-10A-interior light F15-5A-reading lights F19-10A-radio/carphone/infotainment system F21-10A-infotainment system/select lever lock/central locking/hazard warning lights F22- 20A-hazard warning lights/information display/air con/interior light/ cooling fan/infotainment system F29- 10A-hazard warning lights/dipped beam/reverse lights/elec mirrors/elec windows/sunroof/ Instruments/interior lights F31- 30A-interior light/instrument illumination F33- 20A-constant supply to tow socket F34- 20A-instuments/radio/carphone/infotainment system F36- 20A-air con/heated seats F37- 10A-cigar lighter F38- 10A-stop lights/cooling fan/information display/cruise control F40- 10A-cooling fan/air con

connections under seat will not stop horn working. suspect possible fault with earthing connection on steering wheel

Connections under seat were in ref. to air bag light which are a very common fault in different makes .

assuming horn fuse is ok and you are getting a feed to your horn then check your cim pack as these can play up intermittently,it may need a software update or possibly a new cim pack