A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
Relay Box: Service Precautions
Safety Precautions For Repairing Wiring Harnesses And Connectors
CAUTION:
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Wiring harness and connector repairs on the vehicle electrical system are only to be performed using wiring harness repair set VAS 1978.
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Pay attention to the relevant regulations in the individual countries.
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Disconnecting the battery negative (-) terminal prevents accidents when working on electrical system. Disconnect battery.
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Heed stickers on vehicle pointing out components with high voltage. Remaining voltage must be dissipated before commencing repair work.
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Before commencing repair work, always eliminate cause of damage, e.g. sharp body edges, malfunctioning electrical components, corrosion etc.
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Do not loosen ground straps on body if this can be avoided (danger of corrosion).