When the airbag warning light or Supplemental Restraint System (SRS) light illuminates on the PT Cruiser's instrument panel, it is because a trouble code is being sent to the On-Board Diagnostics (OBD) computer from a sensor in the SRS. Trouble codes are used to help you pinpoint and troubleshoot problems with your PT Cruiser. You can reset these trouble codes using an OBD scan tool after you have had the airbag system examined and repaired. This hand-held computerised device can be purchased from your dealership or any auto parts retailer.
Locate the OBD port on the driver's side dashboard underneath the steering column.
Insert the OBD scan tool's connector into this port.
Put the key into the ignition and turn it to the "Run" position. Don't allow the engine to start.
Wait for the scan tool to interact with the OBD computer. When the codes display on the scan tool, find and select the "Delete Codes" command. The scan tool will return to the main menu or display "OK" when it has finished deleting the codes.
Unplug the OBD scan tool and start the engine. Check to make sure that the SRS light has shut off on the instrument cluster.