I wonder if anyone has got to the bottom of this problem. I see a few other posts about it but no solutions as yet.The problem arises after a landing with autobrakes on, I reverse thrust and at 60 - 70 kts I set throttle to idle and reset autobrakes and after that my brakes wont work. I use the period key for the brakes and dont have them mapped to any other device and when I check the failures page it states that there are none.I should add that the parking brake combination of cnrt + period key does still work and that the brakes work fine while taxing for departure.I am using a Toshiba Laptop, core two duo 2.4,4 gb ram, ati 512m Gpu.Any suggestions?ThanksDarryl Critchley

I wonder if anyone has got to the bottom of this problem. I see a few other posts about it but no solutions as yet.The problem arises after a landing with autobrakes on, I reverse thrust and at 60 - 70 kts I set throttle to idle and reset autobrakes and after that my brakes wont work. I use the period key for the brakes and dont have them mapped to any other device and when I check the failures page it states that there are none.I should add that the parking brake combination of cnrt + period key does still work and that the brakes work fine while taxing for departure.I am using a Toshiba Laptop, core two duo 2.4,4 gb ram, ati 512m Gpu.Any suggestions?ThanksDarryl Critchley

If you had done a search within here, you could have had your answer. Nevertheless, have you selected Carbon brakes instead of Steel? Once you change that setting you'll find that you can brake safely. after rolling-out.

Will give that a go when I can, thanks for the suggestion. I had seen that in another post but I kind of dismissed it because I thought it must be a software issue as when I try to apply the brakes after rollout I dont even get the FSX red brake indication on the lower left of the screen.Thanks for replying and I will try that tonight.Darryl Critchley

Will give that a go when I can, thanks for the suggestion. I had seen that in another post but I kind of dismissed it because I thought it must be a software issue as when I try to apply the brakes after rollout I dont even get the FSX red brake indication on the lower left of the screen.Thanks for replying and I will try that tonight.Darryl Critchley

No sweat. Hope you crack it.

Just completed a flight with carbon brakes and same result, loss of brakes after landing and rollout. Autobraking works and parking brake works but pressing period key does nothing (no red brake indication on screen lower left). Brake temps were 1.7 and still white. Taxi back to ramp involves frequent applications of the parking brake which does give the passengers a bit of a rough ride, but, oh well.....Also checked the failures page on CDU, there were none.At least I can finally fly and complete a flight for which I am very thankful there are just a few little niggles left to iron out. Darryl Critchley

Just completed a flight with carbon brakes and same result, loss of brakes after landing and rollout. Autobraking works and parking brake works but pressing period key does nothing (no red brake indication on screen lower left). Brake temps were 1.7 and still white. Taxi back to ramp involves frequent applications of the parking brake which does give the passengers a bit of a rough ride, but, oh well.....Also checked the failures page on CDU, there were none.At least I can finally fly and complete a flight for which I am very thankful there are just a few little niggles left to iron out. Darryl Critchley

Rather than attempting to brake from the keyboard's 'period(.)' key can you try it by mapping your joystick and try braking from there? I had the same problem and changed to carbon brakes, re-booted and re-started FSX. All worked thereafter. But I use my trigger button on my MS Sidewinder ForceFeedback Pro.

The problem arises after a landing with autobrakes on, I reverse thrust and at 60 - 70 kts I set throttle to idle and reset autobrakes and after that my brakes wont work. I use the period key for the brakes and dont have them mapped to any other device and when I check the failures page it states that there are none.

Try the following: Before switching the autobrakes off by turning the knob, press the period key twice. I don't think it has anything to do with steel vs. carbon brakes.I used to have the same problem, then I followed the procedure above, and it's always been working ever since. (Although I have mapped the brakes to the trigger of my joystick.) The trick really seems to be to double-tap the brake key before you disengage the autobrakes (and before you have come to a complete stop).

Try the following: Before switching the autobrakes off by turning the knob, press the period key twice. I don't think it has anything to do with steel vs. carbon brakes.I used to have the same problem, then I followed the procedure above, and it's always been working ever since. (Although I have mapped the brakes to the trigger of my joystick.) The trick really seems to be to double-tap the brake key before you disengage the autobrakes (and before you have come to a complete stop).

When in doubt, read the manual. This is the proper procedure according to the PMDG introduction to the NGX in the documentation. Alternatively, if you use rudder pedals with toe brakes you can press them twice to disengage auto brakes.

See if their`s any setting that keeps applying the brakes while the set key is pressed. Intead of it applying the brakes and then instantly switching them off again. You want the brakes to stay on until you release the switch or button. Where you change it depends on your controls setup and what features it provides. Steve

When in doubt, read the manual. This is the proper procedure according to the PMDG introduction to the NGX in the documentation. Alternatively, if you use rudder pedals with toe brakes you can press them twice to disengage auto brakes.

Normally, I would agree, and prior to HF3, my brakes were working without issue as well. But, after applying HF4, something has definitly changed. I had not made any brake calibration adjustments or tweaks between the patches either. You can tell there were some attempts at tweaking the prior brake issues in HF4 because among other things, the devs changed the brake_ratio variable in the aircraft.cfg files. My first HF4 flight resulted in a constant brake indication which was only releaseable by cycling the parking brake - that made taxing a whole lote of fun. I then remembered I had moved my aircraft departure gate by using the slew function, so I thought, OK, maybe the brake modeling doesn't like that - lets not do that again. My second HF4 flight last night during departure taxi resulted in a brake failure in the CDU Failures menu (mind you, I have all PMDG and FSX failures disabled)! But sure enough, brakes were failed and were restored by clearing the active failure in the CDU. OK, flight continued. Upon landing, I could not get the brakes to release during rollout - even with the documented double-tap toe brakes - that had worked so well prior to HF4. I wound up cycling the Autobrakes knob from Off -> 1 -> Off, and only then, would the double-tap toe brakes finally release my brakes so I could clear the active. Cycling the parking brake had no affect in this instance. PMDG - IMHO, whatever was tweaked in HF4 to address previously noted brake issues has not improved the situation. In my case, with no prior brake issues, they are now 'flakey' at best. Please take another look before releaseing SP1. Thanks.

Strange. I have never had an issue with the brakes, and I am running HF4.

I have never had a problem with the NGX. After hotfix4, I also had the brake issue: I fixed it by starting the "task manager" real quickly and, returning tothe sim and, all was o.k. I was recording so I was a little peeved at the brief inconvenience.

Al, you said you slewed to a new gate position. Did you remove the chocks first, or did you "drag" them along?

I had drug them along as I used the cold-n-dark startup mode and the external power was still applied too.

hi mates, 737NGX its the best to me.but..................ch rudder pedals toe brakes, the plane, dont recognized the toe brakes in the rudder no problem.. of 10 flights I have no brakes in 7.?????.some one?....................thk mates.