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Home >> Mercedes Benz >> 2012 >> CL550 >> Repair and Diagnosis >> Electrical >> Body Electrical >> Electrical System, Equipment & Instructions - 216 Chassis - 3 Of 6 >> Testing & Repair >> Remove/install front central operating unit - AR54.21-P-0500SC

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

MODEL 216.3 

Fig 1: Identifying Front Central Operating Unit Remove/Install Components
G10111162Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Notes on avoiding damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1.1 Stage basic data of front central operating unit (A40/9) in STAR DIAGNOSIS When replacing the front central operating unit (A40/9).
INSTALLATION IMPORTANT Transfer staged basic data to the new front central operating unit (A40/9).
 
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04A
    STAR DIAGNOSIS diagnosis system *WE58.40-Z-1013-06A 
2 Switch off ignition and withdraw transmitter key or Keyless Go start/stop button from the EIS [EZS] control unit IMPORTANT Keyless Go start/stop button only for vehicles with code (889) Keyless Go.  
3 Remove turn/push control   AR54.21-P-0501SX 
4 Press lower release button (1) and fold armrest (2) upright toward rear    
5 Unclip cover (3) from instrument panel (4) SPECIAL TOOL Fig 2
6 Remove bolts (5)    
7 Lift cover (6) to unclip from clips (7)    
8 Disconnect electrical connector (8) and unclip connector of electrical wiring harness (9) from mount on instrument panel (4)    
9 Guide electrical wiring harness (9) out of instrument panel (4) and remove cover (6) with front central operating unit (A40/9) INSTALLATION IMPORTANT Ensure that electric wiring harness (9) is routed correctly  
10.1 Remove front central operating unit (A40/9) from cover (6) Only when replacing front central operating unit (A40/9).  
11 Install in the reverse order    
Fig 2: Identifying Wedge Tool (110 589 03 59 00)
G07321340Courtesy of MERCEDES-BENZ USA
WORKSHOP EQUIPMENT/MB TESTERS

WE58.40-Z-1013-06A STAR DIAGNOSIS Compact diagnosis system for passenger cars, order number 6511 1801 00