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Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
Disconnect battery negative lead
Remove operator unit for heater/air conditioner (with CCC/ASK) Remove centre console switch cluster (with CCC/ASK)
Comply with notes and instructions on handling optical waveguides.
Release screws (1).
Pull back audio system controller (2) slightly.
Unlock associated plug connections and disconnect.
Remove audio system controller (2).
Carry out programming/coding.