What components are included in the Air Bag system and what precautions should be taken during servicing on 2008 Toyota Highlander?

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The Air Bag system consists of Air Bag sensors which include center Air Bag sensor assembly together with both front Air Bag sensors (LH and RH) and both side Air Bag sensors (LH and RH) as well as both rear Air Bag sensors (LH and RH). These sensor units function together as Air Bag sensors. Meanwhile the SRS parts consist of the steering pad alongside front passenger Air Bag assembly and front seat side Air Bag assembly and curtain shield Air Bag assembly and driver side knee Air Bag assembly and front seat outer belt assembly. The Supplemental Restraint System (SRS) of the vehicle includes a driver Air Bag and front passenger Air Bag together with a center Air Bag sensor assembly and front seat side Air Bags and curtain shield Air Bags with front seat belt pretensioners as well as front Air Bag sensors and side Air Bag sensors and rear Air Bag sensors. The correct service sequence must be followed to stop accidental SRS deployment during servicing because this could cause severe accidents as well as to guarantee proper SRS functionality when it is needed. Services must begin only after 90 seconds pass since turning off the ignition and disconnecting the negative battery terminal cable due to the SRS keeping power through its Back Up system. The maintenance of SRS components requires no exposure to hot flames and clearing battery DTCs must remain the first step before battery removal because post-disconnection verification of symptoms becomes difficult. After every automobile accident you must check SRS components even for small incidents followed by sensor removal if impact-related damage is anticipated during maintenance work. New SRS parts must always be used instead of disassembling or repairing the system or using repaired parts. Any broken components should be replaced. Electric troubleshooting requires a volt/ohmmeter with minimum impedance of 10 kOhms/V that obeys instructions located near SRS parts. A warning light check for SRS must be conducted after finishing SRS work. Each system needs its memory contents recorded prior to disconnecting the negative (-) terminal cable and Back Up power supplies that retain memory must be avoided. All Air Bag sensor replacement and door adjustment after disconnecting the negative (-) terminal cable requires a waiting period of ninety seconds before proceeding. Air Bag sensor connectors must be installed correctly and staff must avoid the usage of dropped sensors. Vehicle accident inspections must include checks for DTCs when the Air Bag fails to deploy so that new sensors need replacement in case Air Bags have activated. The yellow color of SRS connectors allows them to be easily identified by people who work with them while connection mechanisms ensure safe attachments and stop incorrect connections. Procedures exist for the proper detachment and reattachment of SRS component connectors which requires complete connection security and correct locking system operation.

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