SRS (Air Bag System) - Checking

Group 72
Equipment and
Accessories

Bulletin Number
72 04 93 (3822)

Woodcliff Lake, NJ
June 1993
Product Engineering

This Service Information bulletin supersedes S.I. 32 01 91 (3261) dated June 1991.

Please remove and discard S.I. 32 01 91 (3261) dated June 1991 from your S.I. binder. Note that this bulletin has been moved to Group 72.

SUBJECT:
Checking Airbag Systems (SRS)

MODELS:
All

Situation:
Previously, BMW maintenance instructions required a check of the SRS system every three years. BMW has re-evaluated this requirement.

The electrical components of the SRS are checked by the diagnostic circuits of the SRS control module any time the ignition switch is turned on. Any electrical malfunctions are indicated by the warning light in the active check control display, or the instrument cluster on later vehicles. All of the SRS systems are self-diagnosing, and store faults in control module memory.

These faults can be retrieved using the BMW Service Tester or MoDiC.

(Refer to S.I. 72 02 91 (3338) concerning this procedure for E30 and E24 vehicles.)

Correction:
Checking the SRS warning light and reading out the diagnostic system is part of every inspection, as is the readout of fault code memories of all other diagnosable control modules.

No further inspection is necessary on the SRS.

ANY DAMAGED SRS PARTS (such as torn covers on modules or other obvious damage) MUST BE REPLACED. Refer to Repair Manual group 32 for details.

Note:
The SRS information label in the glovebox will be removed for the next model year. Vehicles with front passenger airbag systems already carry labels with the following additional information:

^ Do not place a child restraint system in the front passenger seat.

^ Children should always ride in the rear seat.

^ All occupants should wear safety belts at all times.

^ See Owners Manual for more information.

As the SRS information label in the glovebox is no longer necessary, it will (from 9/93 production onward) be removed.

On vehicles produced before 9/93, the glovebox SRS label should be peeled off and discarded the next time the vehicle is in for service.