Remove/install front central operating unit - AR54.21-P-0500SXH

MODEL 221.0/1 as of 1.6.09

MODEL 221.0/1 with CODE (800) Model year 2010

Fig 1: Identifying Front Central Operating Unit Remove/Install Components

G10127724

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Temporarily store basic data from front central operating unit (A40/9) in STAR DIAGNOSIS	When replacing the front central operating unit (A40/9). Transfer the temporarily stored basic data to the new front central operating unit (A40/9).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
2	Switch off ignition and withdraw transmitter key or Keyless Go start/stop button from the EIS [EZS] control unit	Keyless Go start/stop button only for vehicles with code (889) Keyless Go.
3	Remove turn/push control		AR54.21-P-0501SX
4	Remove center console trim (2)		AR68.20-P-2107SXH
5	Remove bolts (1) and remove central front operating unit (A40/9) from center console trim (2)
6	Install in the reverse order