Hello have this 2013 freightliner school bus with no window buzzers. The rear door rear buzzer is working. Have to admit that I have done a lot with the ic buses but never had a issue with one of these. Not sure where to start since not sure where the buzzer is or where the signal feed from the window switch's feed to. I have our local dealer getting me a wiring diagram but thought someone here probly has a good handle on how these ones work. Any input would be appreciated, thanks.
I don't have any experience with Thomas buses that new. However on a Bird I would look for the front buzzer being bad. At least that's the way mine are hooked up.
The front buzzer is mounted underneath the side switch panel cabinet. If you remove the plastic kick panel down by the driver's left foot you can see the two wires on the back side of the buzzer. One easy way to test the front buzzer is to shut down the bus before setting the parking brake. It should sound the buzzer until the brake is set or the dash goes to sleep. I've had to replace a few over the years.
Thanks to Buster 133 you got it right on. I figured someone out there had of dealed with this system. Key off park brake off buzzer should go off, no it did not. After you wrote that I do remember that as a standard procedure for these buses. We removed panel and the round buzzer is right there .It is not working and have one coming tomorrow. Thanks for helping out you were dead on and reduced time spent locating problem greatly. Thanks Roger.