Que tipo de rena você tem? Model and brand, diesel or bencinero?, now the airbag light usually passes mainly in the Peugeot, anyway it does not probate any problem, it is only the light, the best way to change batteries to these cars is with the engine running, so no light turns on, the service can be because you have to perform some intended maintenance of the house, that can be eliminated, but I do not know how in your vehicle It is done by opening the contact 20 seconds you close it 15 and Em seguida, você o abre 20 e dá a inicialização para tentar trabalhar com o Renaul, o do airbag é o problema ou levá -lo à casa ou obter um workshop com o scanner e isso pode entrar no sistema.