| General safety regulations when working on airbag, belt tensioner and battery isolator units (pyrotechnic components) |
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| Pyrotechnic components always contain a propellant that generates a gas during combustion. On some versions, a separate compressed gas reservoir is available to generate the gas. |
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| This compressed gas is stored under high pressure in a compressed gas tank. |
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| Ignition of the pyrotechnic components is by means of an electric/mechanical igniter. |
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| Testing, removing, installing and repair work may only be performed by qualified personnel. |
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| For airbag units, there are no exchange intervals. |
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| Under no circumstances should checks be carried out with a test lamp, voltmeter or ohmmeter. |
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| Pyrotechnic components may only be checked in installed state and with vehicle diagnosis, testing and information systems approved by the manufacturer. |
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| When working on pyrotechnic components and airbag control unit -J234-, the battery earth strap must be disconnected with the ignition switched on. Then cover negative terminal. |
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| A waiting time of 10 seconds is necessary after disconnecting the battery. |
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| The battery must be connected with the ignition SWITCHED ON. When doing this, there should be no-one inside the vehicle. Exception: Vehicles with battery inside passenger compartment. In this case do not stay anywhere near the effective range of the airbags and seat belts. |
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| Wash hands after coming into contact with triggered pyrotechnic components of restraint system. |
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| Pyrotechnic components must not be opened or repaired; always use new parts (risk of injury). |
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| Pyrotechnic components that have been dropped onto a hard surface or show signs of damage must not be installed in a vehicle. |
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| Before handling pyrotechnic components of the restraint system, for example before separating an electrical connection, the mechanic must electrostatically discharge himself/herself. Electrostatic discharge is achieved by touching earthed metallic parts, such as the door striker plate. |
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| Pyrotechnic components must be installed immediately after they have been removed from their packaging. |
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| If work is interrupted, the pyrotechnic component must be stored back in its packaging. |
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| Leaving the pyrotechnic component unattended is prohibited. |
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| Pyrotechnic components must not come into contact with grease, cleaning solution or similar. |
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| Pyrotechnic components must not be subjected to temperatures above 100 °C even for short periods. |
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