My autobrake will not work. Over some weeks, I have posted here and e-mailed PMDG support, but have received no response. I have read what I have been able to find searching this forum and tried various suggestions offered to no avail. The toebrakes work fine. Setting the autobrake at T.O. has no effect on a rejected takeoff. When landing, with the autobrake armed, the ABS Disarm illuminates immediately on touchdown (with no toebrake applied - and even with pedals disconnected - and F1 pressed at Retard) and there is no braking effect. I am able to make the autobrake work fine by changing "autobrake=0" to "1" in the Aircraft cfg file. But then the autobrake appears to be always armed at some unknown setting so the selection switch is of no effect. I run the MD-11 for FSX with the latest update on a Vista 64 bit system using CH pedals and throttle. The autobrake is the only problem I have with this excellent simulation. If anyone can suggest what I might do before giving up, I would much appreciate it. Peter Lowry

I have a similar problem. Sometimes after disarming the autobrake, my brakes don't work. I can arm the parking brake and then if I press the brake button it disarms the parking brake but my brakes don't work. So usually I have to use the parking brake to get to the gate and the restart FSX. Taylor Oldham

Have no problems whatsoever.

Not only a problem with the MD11 but the 74X as well. It is a FSX bug. Only way it will work for me is to use FSUIPC to calibrate the axis.If you use something like it to watch the axis you will find that it has a value in it which upsets the logic. FSUIPC fixes this.There are plenty of comments about autobraking not working for the 744 so search and read.

I used to have this problem with the MD-11 (still have it with the 747, but haven't pursued that much) but when the first update came out I haven't had a problem since. From what I've read (and what's stated above) using FSUIPC is the way to go. Get a registered copy and off you go.

I have the opposite problem. Brakes work absolutely fine (both automatic and manual), but I can't get the "ABS DISARM" light on. :(

My autobrake will not work. Over some weeks, I have posted here and e-mailed PMDG support, but have received no response. I have read what I have been able to find searching this forum and tried various suggestions offered to no avail. The toebrakes work fine. Setting the autobrake at T.O. has no effect on a rejected takeoff. When landing, with the autobrake armed, the ABS Disarm illuminates immediately on touchdown (with no toebrake applied - and even with pedals disconnected - and F1 pressed at Retard) and there is no braking effect. I am able to make the autobrake work fine by changing "autobrake=0" to "1" in the Aircraft cfg file. But then the autobrake appears to be always armed at some unknown setting so the selection switch is of no effect. I run the MD-11 for FSX with the latest update on a Vista 64 bit system using CH pedals and throttle. The autobrake is the only problem I have with this excellent simulation. If anyone can suggest what I might do before giving up, I would much appreciate it. Peter Lowry

Hi Peter:Disconnect your CH pedals and try another landing. See if that makes any difference. If it does, I would recommend the FSUIPC (as others already did).Thanks.Fabio

Many thanks for the comments. I have done all I can figure to do with FSUIPC. The brakes are calibrated with a significant null zone. I have tried enabling and disabling the filter. Disconnecting the pedals makes no difference. MMMM....Peter.

I have the opposite problem. Brakes work absolutely fine (both automatic and manual), but I can't get the "ABS DISARM" light on. :(

Alias,Did you disarm the autobrakes. Sometimes that happens to me even after autobrake disarming.Taylor

I have the autobrake problem with the MD-11, 747, and CS757. FSUIPC fixed my MD-11 and 747 but not the CS757. Here is what I did to get the autobrakes to work for PMDG. I deleted the two brake entries in the FS menu options/settings/controls/control axis, and let FSUIPC handle it alone. Then in windows XP game controller calibration I had to set small deadzones for both brake axis.In FSUIPC axis assignment tab, I set each brake. I put a delta of 256 for each one. A problem I noted was that it wanted to assign the same axis to both brake axis. I think it was assigning 1-X to both left and right brakes. I had to carefully re-scan the axis several times before it finally assigned 1-X to the left brake and 1-Y to the right brake. This was done under an earlier update so maybe it's not a problem now. In FSUIPC joystick calibration tab, I set the left and right brake and checked the reverse box. Autobrakes work fine now for PMDG.Jeff P.

Alias,Did you disarm the autobrakes. Sometimes that happens to me even after autobrake disarming.Taylor

What do you mean by: disarm autobrakes? I let them doing their job down to 80 kts. then push pedals. I don't get any ABS DISARM light on, but they work as I can see greater braking action and differential braking. It is only a matter to see the ABS DISARM on.

I have the autobrake problem with the MD-11, 747, and CS757. FSUIPC fixed my MD-11 and 747 but not the CS757. Here is what I did to get the autobrakes to work for PMDG. I deleted the two brake entries in the FS menu options/settings/controls/control axis, and let FSUIPC handle it alone. Then in windows XP game controller calibration I had to set small deadzones for both brake axis.In FSUIPC axis assignment tab, I set each brake. I put a delta of 256 for each one. A problem I noted was that it wanted to assign the same axis to both brake axis. I think it was assigning 1-X to both left and right brakes. I had to carefully re-scan the axis several times before it finally assigned 1-X to the left brake and 1-Y to the right brake. This was done under an earlier update so maybe it's not a problem now. In FSUIPC joystick calibration tab, I set the left and right brake and checked the reverse box. Autobrakes work fine now for PMDG.Jeff P.

I used this way too, but with the latest patch autobrakes didn't work at all on my system, so I am back to standard assignements and let FSUIPC completely out: now they work.

Gents-In FSX the autobrakes are designed to work without FSUIPC.Please do not forget that throttle position WILL trip the A/B off in order to facilitate a rejected landing. When we work with people having A/B trouble- we often identify improper handling of the throttles, or improper throttle calibration as the culprit tripping them off.You can read how this works in the manual, of course...This isn't to say that all of you are experiencing this- but given how few people have a problem with them- we would generally point you to suspecting your hardware. SOMETHING is sending a brake signal and causing the A/B to assume you want manual braking...

They work! - finally. I disabled the brake calibration in FUSIPC and set a significant null zone with the FSX calibration sliders. I set the sensitivity slider at two-thirds and the null zone slider one third to the right. The autobrakes engaged twice on rejected takeoffs and four out of four times on landing, stopping the airplane in the table distance. The ABS Disarm did not illuminate until the toebrakes were applied. Many thanks indeed. I appear to be fixed. Peter.

Hello,Congratulate you. My Autobrake does not function yet. After I Robert S. Randazzo post has read, I have taken the time and have read the instructions for it. And really I must confess I have not known before the connections between spoilers, throttle, wheelbrake, ATS and ABS. It is just no Standard-FSX airplane with one just the brake during the TO must press and ABS then works.Nevertheless, after numerous attempts on the Runway 37L RJAA, temperature of the brakes 690

Mike are you saying that you are trying to land with 15 degrees of flaps or trying to do a RTO?