I´m happy to report that after many tries and another and last cleaning and wiggling of the cables inside the fuse and relay box under the hood -driver´s side-, my S40 came back to life !!. My conclusion is: if you ever get the key stuck in the ignition switch of your S40 2004.5 onwards, it is proba...

Check the horn relay in the fuse box located under the hood, driver side.

I called the Volvo dealer today (50 miles away) and asked the chief mechanic for advice, if there´s any way I can "de-immobilize" my car....-bring it in-. He says that if the ignition switch is changed it needs to be paired with the car via VIDA....and I wonder if that´s so....Also tried p...

Two nights ago after driving my S40 2004.5 with 40k miles thru a very heavy rain and splashing along the streets (never submerged the car) in Cuernavaca, México, arrived home and later that night, the horn began working on it´s own. I had to remove the horn relay in the engine compartment and proble...