# Throttle is not working when autonomous mode

**URL:** <https://discuss.px4.io/t/throttle-is-not-working-when-autonomous-mode/10083>\
**Category:** QGroundControl\
**Created:** [March 19, 2019, 6:20pm UTC](https://discuss.px4.io/t/throttle-is-not-working-when-autonomous-mode/10083 "2019-03-19T18:20:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Kadir\_Dogan](https://discuss.px4.io/user_avatar/discuss.px4.io/kadir_dogan/32/4867_2.png) [@Kadir\_Dogan](https://discuss.px4.io/u/Kadir_Dogan)\
**Post date:** [March 19, 2019, 6:20pm UTC](https://discuss.px4.io/t/throttle-is-not-working-when-autonomous-mode/10083/1 "2019-03-19T18:20:08Z")

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Hi. I have a problem. I’m using qgroundcontroller for my fixed wing aircraft. I can use the UAV with manuel mode when pixhawk is connecting via RFD telemetry but When I try to update new mission, I have tried takeoff, loiter or just waypoint, the throttle is always zero, motor is not working. I have tried to move UAV up and down, the servos is working properly in mission mode but motor is not. So What is the problem? How can I fix this? Can you give me any suggestion about that issue?

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**Author:** ![JulianOes](https://discuss.px4.io/user_avatar/discuss.px4.io/julianoes/32/30_2.png) [@JulianOes](https://discuss.px4.io/u/JulianOes)\
**Post date:** [March 20, 2019, 8:24am UTC](https://discuss.px4.io/t/throttle-is-not-working-when-autonomous-mode/10083/2 "2019-03-20T08:24:56Z")

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Have a look at this: [https://docs.px4.io/en/flight\_modes/takeoff.html](https://docs.px4.io/en/flight_modes/takeoff.html)

And check in which takeoff/launch mode it is.