Recently I repaired a loose drivers side window on my Z4. To tighten the loose window bolt, I removed the air bag. I then had to move the window to align the bolt to the access hole. I turned the ignition on to power the window without the air bag being plugged in. This turned the air bag light on. I now know better but its too late, the lights on. The dealer says he needs to check it out first to make sure its ok before resetting it. Seems to me that if its bad it won't reset. Its not bad . I can't bring myself to spend $130.00 at the dealer for them to spend 10 seconds to push a button on a reset tool. I'm told some reset tools won't reset this car. Any idea what reset tool will work and where can I buy,rent,borrow or use one?