Bring up workshop level on instrument cluster - AP00.20-P-0046A

MODEL 117, 166, 172, 176, 190, 197, 205, 207, 212, 217, 218, 222, 231, 246 

MODEL 204 with CODE 442 (Luxury multifunction steering wheel) 

Fig 1: Identifying Workshop Level On Instrument Cluster - Shown On Model 212.002

Courtesy of MERCEDES-BENZ USA

Shown on model 212.002, valid for model 197, 204 with code 442 (Comfort multifunction steering wheel), 207, 212 

Fig 2: Identifying Workshop Level On Instrument Cluster - Shown On Model 172

Courtesy of MERCEDES-BENZ USA

Shown on model 172, valid for model 117, 166, 172, 176, 218, 231, 242, 246 

Fig 3: Identifying Workshop Level On Instrument Cluster - Shown On Model 222

Courtesy of MERCEDES-BENZ USA

Shown on model 222, valid for model 190, 205, 217, 222 

	Open workshop level
1	Close engine hood, doors and trunk lid or liftgate
2	Switch electronic ignition lock control unit to position "1" (circuit 15R)	There must be no fault messages in the multifunction display (6).
3	Press system selection button (1) repeatedly until menu item "Trip" is highlighted in multifunction display (6), and then confirm with OK button. (3)
4	Press scroll forward/back button (4) repeatedly until standard "Total distance" display appears in "Trip" menu in multifunction display (6)	Operation step 5 must be performed within approx. 5 s after the standard "Total distance" display appears.
5	First press and hold down accept phone call button (2), then within 1 s additionally press OK button. (3) and hold down for approx. 5 s	The workshop menu with the following tabs appears in the multifunction display (6): "Vehicle data", "Dynamometer test", "Change brake lining" (depending on equipment installed), "ASSYST PLUS", "Head-up-display" (depending on equipment installed).
	Close workshop level
6	Press "Back" button (5) repeatedly until standard display (total distance) appears in multifunction display (6)
7	Switch electronic ignition lock control unit to position "0"