Remove/Install Touchpad Control Unit - AR54.21-P-0503LWA

Model 205, 213, 238, 253 

with code 446 (Touchpad only) 

except code 448 (Touchpad) 

Model 293 

with code 446 (Touchpad only) 

Fig 1: Touchpad Control Unit Components Location - Model 205 With Code 446, Except Code 448

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Perform commissioning of touchpad (A105).	When replacing touchpad (A105).
		Model 293 with code 446 (Touchpad only)	AD00.00-P-2000-06FR
		Model 205, 213, 253 with code 446 (Touchpad only) except code 448 (Touchpad)	AD00.00-P-2000-04B
		Model 238 with code 446 (Touchpad only) except code 448 (Touchpad)	AD00.00-P-2000-06LWO
2	Remove cover (1) from center console.	Model 205, 213, 253 with transmission 725 with code 446 (Touchpad only) except code 448 (Touchpad)	AR68.20-P-2350LW
		Model 293 with code 446 (Touchpad only)
		Model 238 with transmission 725 with code 446 (Touchpad only) except code 448 (Touchpad)	AR68.20-P-2350LWO
		Model 253.992/993 with code 446 (Touchpad only) except code 448 (Touchpad)	AR68.20-P-2350RFW
3	Remove bolts (2) from touchpad (A105).
4	Remove touchpad (A105) from cover (1).
5	Unclip and remove left lower control panel (N72/4) and right lower control panel (N72/5) at catch hooks (arrows).	When replacing touchpad (A105).
		Dismantling tool	Fig 2
6	Install in the reverse order.

Fig 2: Identifying Dismantling Tool (000 589 95 63 00)

Courtesy of MERCEDES-BENZ USA