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Home >> Mercedes Benz >> 2019 >> C300 4Matic, 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seats, Bunks, Restraint Systems - 205 Chassis 2 Of 3 >> Testing & Repair >> Remove/Install Supplemental Restraint Systems (SRS) Control Unit - AR91.60-P-0624LW

Remove/Install Supplemental Restraint Systems (SRS) Control Unit - AR91.60-P-0624LW

Model 205 

Model 213 

Model 238 

Model 253 

Model 293 

Shown on Model 205 

Fig 1: Supplemental Restraint Systems (SRS) Control Unit Components Location - Model 205
G14197821WARNINGREMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSREFER TO SELF-DIAGNOSTIC SYSTEMSREFER TO SELF-DIAGNOSTIC SYSTEMSTORQUE SPECIFICATIONCourtesy of MERCEDES-BENZ USA
WARNING Risk of injury  during testing and repair operations related to pyrotechnical components Do not expose pyrotechnical component parts to temperatures above 100 °C or 212 °F. Disconnect current supply when working on such component parts. AS91.00-Z-0008-01A
Topical note Notes on the use of paint scraping nuts on ground connections   AH00.19-P-1000-20A
Topical note Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Information, assessment and legal requirements when working with, handling and storing pyrotechnical components   AH91.00-Z-0000-10A
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING   Remove/Install   
1 Carry out commissioning of SRS control unit (N2/10). When replacing supplemental restraint system control unit (N2/10).  
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 293 AD00.00-P-2000-06FR
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 205, 213, 253 AD00.00-P-2000-04B
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 238 AD00.00-P-2000-06LWO
2 Switch off ignition and store transmitter key outside of transmission range (min. 2 m).    
3 Detach ground line of on-board electrical system battery. Model 293 AR54.10-P-0003EQ
    Model 205, 213, 253 AR54.10-P-0003LW
    Model 238 AR54.10-P-0003LWO
4 Remove head unit. Model 293 Model 205 as of model year 2019 with code 531 (COMAND® APS)
 
Model 205 with code 506 (Audio 20 NTG 5.5 radio)
AR82.85-P-1101EQ AR82.85-P-1101LWM
    Model 205, 253 with code 520 (Audio 20 USB)
 
Model 205, 253 with code 522 (Audio 20 radio)
 
Model 205 up to model year 2019 with code 531 (COMAND® APS)
 
Model 253 with code 531 (COMAND® APS)
AR82.85-P-1100LW
    Model 213, 238 AR82.85-P-1101LWE
5 Remove foam parts (1).    
6 Disconnect electrical connection (2, 3).    
7 Detach nuts (4, 5). TORQUE SPECIFICATION Restraint system control unit to vehicle floor *BA91.60-P-1007-01O 
8 Remove SRS control unit (N2/10).    
9 Install in the reverse order.    
AIRBAG

Number Designation Model 205.0/1/2/3 Model 205.4
BA91.60-P-1007-01O Restraint system control unit to vehicle floor Nm 10 10
AIRBAG

Number Designation Model 213 Model 238
BA91.60-P-1007-01O Restraint system control unit to vehicle floor Nm 10 10
AIRBAG

Number Designation Model 253 Model 293
BA91.60-P-1007-01O Restraint system control unit to vehicle floor Nm 10 10