Side airbag sensors, function - GF91.60-P-4009-02A
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Model 129 as of 1.9.95, models 140, 170, 202, 210, model 208
The side airbag sensors sense the acceleration acting in the lateral direction of the vehicle in the event of a side collision and initiate a logic check in the ETR control module with airbag (N2/2). If the values coincide a triggering signal is sent to the side airbag squibs (R12/9 and R12/10).