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[Solved] Brakes sometimes just don't work on PMDG 737 for MSFS 2024

skythelimit · 2026-04-26T21:05:33Z

Hi John PMDG 737 v4.00.028 on MSFS 2024 with FSUIPC 7.5.7d. I have had this ticketed some months with PMDG but we have not solved it. Everything works perfectly, but now and then (quite rarely) a sim flight will not have any brakes working from the start of the session, i.e. I first notice it when starting to taxi. Even when it happens, I can see the brake pedals moving perfectly in the pmdg cockpit and I can still set Parking Brake (which needs brakes to be depressed to engage) but nothing will stop the aircraft, not even successfully engaging parking brake. I did try brakes being assigned in MSFS only but I still got the issue. I then got the issue today after I have had them assigned for some time in FSUIPC as below. I have triple-checked and there are no brake assignments in MSFS and no PMDG failures set. I found the extract below in the FSUIPC user manual, do you know if this Filter has had an effect of PMDG?? I'll also try with filter off. Any other ideas would be extremely welcome. I have also copied this to my PMDG ticket to see if they have anything to add, but I doubt they will as we have tried most things already. This included just using the keyboard to apply brakes when the issue occurred, but not even this worked and I have also deleted this keyboard assignment since. Note that enabling the filter action on some axes, particularly Brakes, can apparently adversely affect the way some advanced cockpits operate. If you have any doubt do not check the Filter option.

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Posts: 29

skythelimit

Registered

Topic starter

September 1, 2026 2:27 pm

(@skythelimit)

Joined: 10 months ago

Yes, I solved this, sorry for not updating, it was caused by FS Flight Control Pushback feature which constantly repositions the aircraft.

I changed to using Pushback Helper and have never had the problem since.

https://flightsim.to/addon/853/pushback-helper-v2-0

wlevel47

Registered

(@wlevel47)

Joined: 1 month ago

Posts: 2

September 1, 2026 3:35 pm

Reply to skythelimit

@skythelimit Thanks very much for that! In my case I am a GSX Pro pushback user and have been for years, but perhaps it has the same root cause. This information does give us a big hint on where to look next.

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