how can i prevent Dynamic Select resetting (to comfort) itself while driving ?
or what i need to look for ?

i have Monaco can check for error messages

Is it not caused by sticky keys, did you spill something sticky on to the centre console? Maybe the car is sometimes registering the button as a press (well, switch, tilt) when you didn't actually touch it?

no, because always go to comfort .

Check for codes, but what mode are you trying to stay in? What about individual, does it stay there or you watch it slowly going down to sport+ and sport then comfort or does it skip straight to comfort from individual?

yes, does it skip straight to comfort from individual

i use individual

Fair to say it still does it if you use sport mode or eco mode, it always default to comfort?

U016887 - Communication with electronic ignition lock has a malfunction
C007362 - The delivered drive torque has a malfunction. The signal comparison is faulty.

Both of which doesn't have anything to do with your problem, except maybe the signal comparison which the system deems the comfort mode is the safetest to stay in?

YES

C007362 - The delivered drive torque has a malfunction. The signal comparison is faulty.

i did a repro, i think is this the reason why

Fair to say you cleared the codes and it simply comes back?

You could try restoring the changes you made then.

not quite sure what that code is, it is uncommon I don't hear it at all on the forums : ( Sorry about that.

You said you changed a setting but you can't revert it?

about the resetting (to comfort) , what i can do ?

I am not sure to be honest sorry about that.

What you could try is reverting that change you made and see if it stops doing it.

I assume you mean by repro as in reprogramming? Can you revert this?

yes, repro giving more HP and torque, i didnt done that,

Fair to say it wasn't doing this before you tuned the vehicle? As in stuck in comfort mode?

See if this is the cause to that: https://forums.mbclub.co.uk/threads/...faulty.300037/

Someone remapped the vehicle with MSL and caused that code.

that i dont remember

Revert the car to stock and go from there I guess.

Good luck

I can't tell, is this car tuned? It's likely the engine torque fault that is causing this. Something's wrong with your tune/engine, so it can't correctly determine the amount of torque it makes and therefore it likely reverts to the Comfort throttle map as a precaution as that is the safest throttle map. You gonna have to sort out why you are getting these faults. If the engine is tuned, then it's likely an issue with the tune. If it's not tuned then something else is going on, such as a faulty sensor.