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Home >> Smart >> 2014 >> Fortwo Passion >> Repair and Diagnosis >> Restraints >> Seat Belts >> Seats, Bunks, Restraint Systems - 451 Chassis >> Testing & Repair >> Remove/install airbag, sidebag and emergency tensioning retractor control unit - AR91.60-P-0623MCU

Remove/install airbag, sidebag and emergency tensioning retractor control unit - AR91.60-P-0623MCU

MODEL 451.3/4 

Fig 1: Identifying Restraints Systems Control Unit Remove/Install Components
G10979194Courtesy of MERCEDES-BENZ USA
MODIFICATION NOTES

25.8.08 Value modified: Bolt, release unit to dashboard carrier   *BA91.60-P-1002-01C 
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
NOTES Notes on performing repair, body work and welding on vehicles with airbags and ETR units   AH91.00-P-0002-01SM
NOTES Notes on avoiding damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Disconnect ground line of battery   AR54.10-P-0003MCC
2 Remove vertical strut paneling   AR68.00-P-1500MCC
3 Disconnect electrical connectors (1) from restraint systems control unit (N2/7)    
4 Remove bolts (2) and remove restraint systems control unit (N2/7) INSTALLATION IMPORTANT Tighten the bolts (2) by following the tightening sequence (a, b, c).  
    TORQUE SPECIFICATION *BA91.60-P-1002-01C 
5 Install in the reverse order    
6 Read out fault memory and perform "Control unit initial startup" of restraint systems control unit (N2/7) Only perform when installing new restraint systems control unit (N2/7).  
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04MCC
AIRBAG

Number Designation Model 451.3 Model 451.4
BA91.60-P-1002-01C Bolt, release unit to dashboard carrier Nm 10 10