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Home >> Mercedes Benz >> 2007 >> R320 >> Repair and Diagnosis >> Electrical >> Body Electrical >> Electrical System, Equipment & Instructions - 251 Chassis - 1 Of 4 >> Testing & Repair >> Remove/install combination switch - AR54.25-P-2800RT

Remove/install combination switch - AR54.25-P-2800RT

MODEL 251 

Shown on vehicle with electrically adjustable steering column, code 441 

Fig 1: Identifying Combination Switch Remove/Install Components - Shown On Vehicle With Electrically Adjustable Steering Column
G10121207Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
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 escaping oxyhydrogen gas. Risk of injury  caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries  caused by short circuit. Risk of poisoning  caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices No fire, sparks, open flames or smoking.
Wear acid-resistant gloves and clothing and safety glasses with side guards.
Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.
Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.
AS54.10-Z-0001-01A
1 Disconnect battery ground cable   AR54.10-P-0003RT 
2 Remove driver airbag unit (1)   AR91.60-P-0660RT
3 Remove steering wheel (2)   AR46.10-P-0100RT
4 Removing jacket tube module (N80)   AR54.25-P-2802RT 
5 Remove clock spring contact (3)   AR46.10-P-0200RT
6 Remove steering angle sensor (4)   AR46.10-P-0300RT
7 Unscrew the screws (7). IMPORTANT The number of bolts depends on the equipment.  
8.1 Detach steering column adjustment switch (6) IMPORTANT Only on vehicles with electrically adjustable steering column, code 441.
IMPORTANT Do not damage electrical connector.
 
9 Detach combination switch (5) IMPORTANT Do not damage electrical connector.  
10 Install in the reverse order    
11 Perform basic programming   AR00.19-P-0200RT