Hummer H2. Manual - part 18

Fig. 28: Locating Driver Air Bag Clockspring Connectors (MPV) 
Courtesy of MAZDA MOTORS CORP. 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures

  

Fig. 29: Locating Passenger Air Bag Clockspring Connectors (Miata Shown; Other Models Are Similar)
Courtesy of MAZDA MOTORS CORP. 

MERCEDES-BENZ 

SYSTEM OPERATION CHECK 

Supplemental Restraint System (SRS) warning light indicates air bag and seat belt Emergency Tensioning 
Retractor (ETR) system readiness. Turn ignition on. SRS warning light will come on, and then go out after 
approximately 4 seconds indicating system is functioning properly.  

If SRS warning light does not come on, comes on while driving or is on all the time (for crash related faults), 
there is a system fault. If SRS warning light stays on for a duration of approximately 2 minutes, a non-crash 
related fault is present. Repair malfunctioning system.  

Some vehicles may be equipped with passenger-side/child safety seat air bag deactivation system. System 
requires a special child safety seat and a specially designed passenger front seat. When child seat is installed in 

NOTE:

Information CLK, CL500, ML320, SLK, SL320 and SL500 is not available from 
manufacturer. 

NOTE:

Some models may be equipped with side-impact air bag systems. Disabling and 
activating procedures for these systems are not covered in this article. 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures

  

passenger seat, the passenger-side front air bag is disabled.  

When child seat IS properly installed, AIRBAG OFF indicator light will come on and stay on when ignition is 
in ON or RUN position. When child seat is NOT installed and ignition is turned on, AIRBAG OFF indicator 
light will come on for approximately 6 seconds and then go out.  

SERVICE PRECAUTIONS 

Observe following precautions when working with air bag systems:  

z

When working around steering column and/or instrument panel components, and before any repairs are 
performed, disable air bag system.  

z

Before straightening any damage to body, or before performing electrical arc-welding, disable air bag 
system.  

z

If air bag module or seat belt tensioner is dropped from a height greater than 20 inches it must be 
replaced.  

z

Always wear safety glasses and gloves when handling a deployed air bag module or ETR module. Air 
bag module may contain sodium hydroxide deposits which are irritating to the skin.  

z

DO NOT repair any SRS component or wiring harness. SRS servicing requires replacement of faulty 
component. DO NOT use components previously installed on another vehicle. Only use SRS components 
supplied by manufacturer.  

z

Always handle air bag module with trim cover away from body. Always place air bag module on 
workbench with trim cover up, away from loose objects.  

z

DO NOT expose any SRS component to temperatures in excess of 212°F (100°C).  

z

DO NOT leave SRS components unattended. If work is interrupted, SRS component should be stored in 
a secure, locked area.  

z

DO NOT expose any SRS component to cleaning agents or other solvents, grease, gasoline, etc.  

z

If SRS is not fully functional for any reason, vehicle should not be driven until system is repaired and 
again becomes operational. DO NOT remove bulbs, modules, sensors or other components or in any way 
disable system from operating normally. If SRS is not functional, park vehicle until it is repaired and 
functions properly. See SYSTEM OPERATION CHECK .  

DISABLING & ACTIVATING AIR BAG SYSTEM 

Disabling System (C230 & C280) 

1. Turn ignition off and remove ignition key. Disconnect and shield negative battery cable. Remove covers 

as necessary to access horn/air bag clockspring connector (A45x1) located at base of steering column. See 
Fig. 30 .  

2. Disconnect horn/air bag clockspring connector. Remove passenger floor covering and door sill covers as 

necessary to access passenger air bag connector (X28/12). See Fig. 31 . Disconnect passenger air bag 
connector. System is now disabled.  

Activating System 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures

  

Ensure ignition is off. Reconnect horn/air bag clockspring connector. Reconnect passenger air bag connector. 
Reconnect negative battery cable. System is now activated. Perform SYSTEM OPERATION CHECK .  

Fig. 30: Locating Air Bag Clockspring Connector (C230 & C280) 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures