Remove/install control and operating unit - AR83.40-P-6350TY

MODEL 219.3 Control and operating unit in instrument panel 

Fig 1: Identifying Control And Operating Unit Remove/Install Components

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

5.7.06

"Disconnect/connect battery ground line" removed

	Remove/install
	Notes on avoiding damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1.1	Temporarily store basic data of AAC [KLA] control and operating unit (N22) or of comfort AAC [KLA] control and operating unit (N22/7) in STAR DIAGNOSIS	Only when replacing AAC [KLA] control and operating unit (N22) or comfort AAC [KLA] control and operating unit (N22/7). Transmit staged basic data to the new AAC [KLA] control and operating unit (N22) or the new comfort AAC control and operating unit (N22/7).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04TX
		STAR DIAGNOSIS, diagnosis system	*WH58.30-Z-1048-13A
2	Remove instrument panel trim strip (1)		AR68.10-P-1180TX
3	Place instrument panel trim strip (1) with front side down on a suitable surface, remove screws (2) using a cordless drill/driver and remove AAC [KLA] control and operating unit (N22) or comfort AAC [KLA] control and operating unit (N22/7) from instrument panel trim strip (1)	Place instrument panel trim strip (1) with front side down on a suitable surface to prevent damage.
		Cordless drill/driver	*WH58.30-Z-1007-20A
4.1	Disconnect electrical connector (3) and remove electrical wiring harness	Only when replacing AAC [KLA] control and operating unit (N22) or comfort AAC [KLA] control and operating unit (N22/7).
5	Install in the reverse order

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1048-13A	STAR DIAGNOSIS, diagnosis system; Compact Passenger Car	6511 1801 00
WH58.30-Z-1007-20A	Cordless drill/driver