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Home >> Mercedes Benz >> 2018 >> SL550 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - 231 Chassis >> Testing & Repair >> Remove/install control and operating unit - AR83.40-P-6350RK

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

MODEL 231 

Fig 1: Control And Operating Unit Remove/Install Components (1 Of 3)
G11129420Courtesy of MERCEDES-BENZ USA
Fig 2: Control And Operating Unit Remove/Install Components (2 Of 3)
G11129421Courtesy of MERCEDES-BENZ USA
Fig 3: Control And Operating Unit Remove/Install Components (3 Of 3)
G11129422NOTESREMOVINGINSTALLINGIMPORTANTIMPORTANTIMPORTANTIMPORTANTIMPORTANTREFER TO SELF-DIAGNOSTIC SYSTEMSCourtesy of MERCEDES-BENZ USA
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and remove transmitter key (A8/1) or KEYLESS-GO start/stop button (S2/3) from electronic ignition lock control unit (N73) IMPORTANT KEYLESS-GO start/stop button (S2/3) only with CODE 889 (KEYLESS-GO).  
2 Remove left and right cover at side from center console   AR68.20-P-2355RK
3 Remove screw/bolts (6)    
4 Remove screws/bolts (7) and remove bracket (8) IMPORTANT Note installation position of bracket (8).  
5 Remove cover (9) IMPORTANT To do so, release cover (9) at bottom and swivel out in direction of arrow (arrow B) until it is released at top and can be removed toward rear (arrow C).
To swivel out, slightly open lid (10) to avoid any damage to the lid (10).
 
6 Pull cover (9) toward rear and disconnect electrical connectors (11) IMPORTANT To do so, pull cover (9) toward rear until electrical connectors (11) are accessible.  
7 Remove automatic air conditioning control and operating unit (N22/7) IMPORTANT To do so, remove screws/bolts (12).  
8 Install in the reverse order    
9 Perform initial startup of automatic air conditioning control and operating unit (N22/7) with Star Diagnosis Only when replacing automatic air conditioning control and operating unit (N22/7).  
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04A