My wife just took delivery on her third 4Runner (previously had 2000 and 2007). The vehicle is outstanding....except for the horn. It is embarassing. I needed to "remind" someone that the light had turned green the other day and used the horn. I thought that the horn had not sounded at all since I really couldn't hear it over the radio. Her previous two 4Runners had nice loud horns, but not this one. The dealer and Toyota say it is what it is. Any ideas on how to remedy this? Thanks.