If you only ever witnessed the convoluted calibration procedure ......

There is a "fake ass" that accepts barbell weights and the seat is moved through its ranges with varying weights. If at any measurement any one of the force sensors is out of a fairly narrow tolerance (+-4lbs IIRC) it fails calibration. Just the interference between the back and bottom cushions can fail the calibration so it is standard to punch the seat to "relieve" those stresses before any measurements.

WSS = yet another reason to never own a W211.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff