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Home >> Mercedes Benz >> 2008 >> GL450 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Steering Column Switches >> Charging, Control Panel/Cluster, Data Bus, Fuses/ Relays, PARKTRONIC, Sensors & Switches - 164 Chassis >> Testing & Repair >> Remove/install button unit on multifunction steering wheel - AR54.25-P-2840GZ

Remove/install button unit on multifunction steering wheel - AR54.25-P-2840GZ

MODEL 164, 251 

Fig 1: Identifying Button Unit On Multifunction Steering Wheel Remove/Install Components
G05259094Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on the multifunction steering wheel removed with the Voice control system (VCS [SBS]) (code 813) 

REMOVINGINSTALLING Remove/instal    
DANGER Risk of injury  caused by performing testing or repair work on airbag or emergency tensioning retractor units. Store airbag units with deployment side facing up; do not expose to temperatures greater than 100°C. When working on these units, disconnect the power supply. AS91.00-Z-0001-01A
DANGER Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001-01A 
1 Disconnect ground cable from battery Model 164 AR54.10-P-0003GZ 
    Model 251 AR54.10-P-0003RT
2 Move steering wheel (1) to horizontal position    
3 Remove airbag unit from steering wheel Model 164 AR91.60-P-0660GZ
    Model 251 AR91.60-P-0660RT
4 Disconnect electrical connectors (4).    
5 Unscrew bolt (2)    
6 Remove the left steering wheel gear shifter (S110/2) or right steering wheel gear shifter (S111/2) to the rear IMPORTANT Do not disconnect electrically  
7 Remove bolts (3) IMPORTANT Access from the back.  
8 Remove left multifunction steering wheel button group (S110) or remove right multifunction steering wheel button group (S111)    
9 Install in the reverse order