Subaru Legacy BN/BS (2015-2019) Service Manual: Caution

• The airbag system (including pretensioner) is fitted with a backup power supply. After disconnecting the battery ground cable, the airbag may operate if you do not wait for 60 seconds or more before starting the service of airbag system.

• When performing an operation with the airbag system parts including pretensioners exposed, do not apply any impact to airbag modules and sensors.

• When servicing a vehicle, be sure to turn the ignition switch to OFF, disconnect the ground cable from battery, and wait for 60 seconds or more before starting work.

• If the airbag warning light illuminates, check or repair the vehicle immediately to prevent it from airbag system malfunction.

• Do not allow water or oil to come in contact with the connector terminals. Also, do not touch the connector terminals directly.

• If damage, open circuit or rust is found on airbag system wiring harness, do not repair the harness. Always replace the faulty harness with a new genuine part.

• When painting or performing sheet metal work on the front part of the vehicle, including the front wheel apron, front fender and radiator panel side, remove the front sub sensors and wiring harness of airbag system.

• When painting or performing sheet metal work on the side of the vehicle, including the side sill, center pillar and front and rear doors, remove the front door impact sensor, side airbag sensors, curtain airbag sensor and wiring harness of the airbag system.

• When attaching the steering wheel and steering roll connector, be sure to adjust the steering roll connector.

• If airbag sensors, airbag module, airbag control module, pretensioners and harnesses are deformed or damaged, replace with new parts.

• Install the wiring harness securely with the specified clips to avoid interference or tangled with other parts.

• Do not use the airbag or pretensioner parts from other vehicles. Always replace the defective parts with new parts.

• Never reuse any activated airbag module and pretensioner.

• Do not discard undeployed airbag or pretensioner.

• Do not reuse the bolts and nuts when the following parts are removed. Always replace with the specified new bolts and nuts.

• When attaching the steering wheel and steering roll connector, be sure to adjust the steering roll connector.

• After removing each parts of the airbag system, keep them with the pad side facing upward on a dry, clean and flat surface away from heat, light sources, moisture and dust.

• Observe the following; the airbag system component or the internal parts of seat belt pretensioner may be damaged or the reliability may be greatly lowered.

• When storing a removed airbag module, observe the following items. If the pad of the airbag module is in contact with other objects, it may cause a serious accident if the airbag accidentally operates.

• Do not disassemble driver’s airbag module, seat cushion airbag module, passenger’s airbag module, side airbag modules, curtain airbag module or pretensioner.

• The removed front seat with airbag module must be kept at least 200 mm (8 in) away from walls and other objects.

• Even if any part must be replaced as the result of troubleshooting, do not use an airbag part or pretensioner part from other vehicles. Always replace the defective parts with new parts.

• When checking the airbag system, be sure to use a digital circuit tester. Use of an analog circuit tester may cause the airbag to activate erroneously due to a minimal current inside tester.

• Do not allow water or oil to come in contact with the connector terminals. Also, do not touch the connector terminals directly.

• When checking, use a test harness (1). Damage to connector terminal causes malfunction. Do not directly put the tester probe on airbag connector terminal.

• Do not check continuity of the driver’s airbag module, seat cushion airbag module, passenger’s airbag module, side airbag module, curtain airbag module or pretensioner.

• If damage, open circuit or rust is found on airbag system wiring harness, do not repair the harness. Always replace the faulty harness with a new genuine part.