The supplemental restraint system is the electronic network responsible for passive safety devices in a vehicle. It consists of a central control module, impact sensors, seat weight sensors, seatbelt pretensioners, and airbag modules. It is designed to supplement the primary restraint of the seatbelts by calculating crash severity and deploying the appropriate pyrotechnic devices.
I can't pass this car for inspection with the SRS light illuminated on the dash.
Never probe an SRS connector with a standard multimeter, as the small electrical current can accidentally deploy an airbag.
Also heard as
- supplemental restraint system
Related terms
Airbag
An inflatable safety device designed to cushion occupants during a collision.
Squib
A small pyrotechnic heating element that triggers the deployment of an airbag or seatbelt pretensioner.
Supplemental restraint system
The network of vehicle safety devices designed to operate alongside seatbelts during a crash.
Passive restraint
A vehicle safety device that operates automatically without any action required by the occupant.