Supplemental Restraint System Function - GF91.60-P-0003GW

Model 463 (except 463.342) 

as of model year 2013 up to model year 2019 

Model 463.342 

Courtesy of MERCEDES-BENZ USA

Block diagram 

Function requirements, general 

• The Supplemental Restraint System must be programmed to the vehicle (left or right-hand drive vehicle, equipment programming and configuration parameters)
• Circuit 15R ON

The electronic ignition lock control unit sends the status of circuit 15 over chassis CAN 1 to the Supplemental Restraint System control unit.

After circuit 15R is switched off, parts of the supplemental restraint system remain active for a certain run-on time.

Power reserve: The Supplemental Restraint System control unit provides a power reserve for at least t = 300 ms if the battery has been disconnected.

Supplemental restraint system, general information 

The Supplemental Restraint System is used for occupant protection.

Belt lock: The belt is prevented from extending in certain situations, irrespective of the status of the Supplemental Restraint System. The following functions are described in separate documents:

• Passenger-side seat occupied recognition function 
• Supplemental restraint system deployment function