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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 >> Removing and installing steering column adjustment switch - AR54.25-P-2804RT

Removing and installing steering column adjustment switch - AR54.25-P-2804RT

MODEL 251 with CODE (441) Electrically adjustable steering column 

Fig 1: Identifying Steering Column Adjustment Switch Remove/Install Components
G10121210Courtesy 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 bolts (6) and remove steering column adjustment switch (5) IMPORTANT Do not damage electrical connector.  
8 Install in the reverse order    
9 Perform basic programming   AR00.19-P-0200RT