e55igor1

Hi, everyone. I noticed that my transmission is forgetting to shift up after harder breaking. I need to use pedals to change to the next speed.
The transmission is smooth on every gear changes, even from 1 to 2 and from 2 to 1.
When I am driving at 7th gear (speed 60) then braking, transmission downshifts to 3rd, 4th or 5th (speed can be from 25 to 40) normally like suppose to be. When accelerating to the same speed (60) and transmission sometimes forgetting to upshift to the right gear (can stay on 3rd, 4th, 5th) with high RPM. Doesn't matter if it is sport or comfort mode. I am using pedals to change the gear and it helps. It is not always happens, maybe two times a day, more often after harder braking.
I have DAS, No fault codes present...
Maybe I need to reset the adaptation? But dealer recommends to do reset only after repair.
Please help. Thank you!

jrcart

What mode are you in? Are you running in M? If so it will rev to a higher RPM before shifting because it thinks you want to shift yourself rather than an automatic upshift.

e55igor1

Running in S mode or C mode, thank you

khmergod

It might be your aggressive driving, sometimes it will upshift, but closer to redline.

e55igor1

Well, it happens when I am cruising, stop and go traffic. It will upshift but with delay, not normal as usually. Trying to guess, but everyone writing about transmission have problem with hard shifting or limp mode. Mine transmission shifting with delay sometimes. It is my second AMG and old one doesn't had this problem...
Thank you!

SROC276

Try disconnecting the battery and let sit for10-20 minutes then hook ack up. I tried other steps and this method worked to solve my tranny miss shift issues. It's worth a try.

OPALW208

the 722.9 transmission is notorious for having valve body issues.

roadtalontsi

sounds normal. when you drive aggressively it does too. It will hang gears if you floor it and let off, because it thinks your going to punch it again. just tap/hold the upshift paddle or floor shifter to the right.