AFAIK, that gas pedal reset just recalibrates the idle and wide-open pedal positions.
On my 93TT Rx-7, it was still cable driven, but you measured the throttle position voltage signals at Idle and WOT, and then rotated the TPS to get those voltages in spec. Taking another step back, I did the same thing on my "worked" olds 425 ci-in dynamic-88, when I looked down the ports of a holley 780, and made sure there was no tension or excessive looseness in the throttle linkage as pushed the pedal from idle to wide open.
I don't see how, per the last post in your link, that resetting the gas-pedal max and min positions cures all the trans and ecu problems that's claimed.
ex's 2008 C300 4Matic, Luxury + Sport Grille
@kevink2 - The accelerator reset is hardly a "cure all", although it is a mystery why MB engineers design this vital piece of driver input in a way that it loses its calibration.
Some prefer to do this throttle reset pushing the pedal only half-way down. This improves throttle response as when the pedal is pushed half-way down, the ECU and the TCU receive a signal as though it was floored.
In addition, the 2010 and earlier W204's have a "kickdown switch" at the end of the pedal travel, starting in 2011 this (IMO) vital switch was eliminated.
The ECU should respond instantly to pedal input, not so the TCU which receives data from SEVEN input sources, the throttle and the ECU being two of them. There is a post somewhere with a schematic from a Honk Kong MB training manual (in English) showing all these seven inputs to the TCU.