Hi to everyone, I'm picking up a jeep this Sunday & I have found all the answers here w/ a search about questions that I've had but I have something that haven't really found a direct answer too . So here's my question, There is a red pull button on floor of jeep between the front seats & shifter, any idea what this is for ? current owner ( until Sunday ) doesn't know, it just stays pulled up. I'm thinking this is for the vacuum for the 4 wheel drive that these jeep are so known to have problems with, possibly a upgrade for the vacuum ? I will post a pic of it. Thanks for the answers , love this place !!!!