A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009)
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Disconnect electrical connector to footwell vent - C -.
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Remove footwell vents - A- and -B -.
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Remove brake lamp sensor => [ Brake Lamp Sensor ] See: Brake Intervention Sensor / Switch/Service and Repair.
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Separate brake pedal from brake booster => [ Brake Pedal and Brake Booster, Disconnecting and Connecting ] See: Brake Pedal Assy/Service and
Repair/Brake Pedal and Brake Booster, Disconnecting and Connecting.
CAUTION!
The brake pedal stop must always be installed otherwise the brake lamp sensor mount could break when the brake pedal is unlocked
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Pry brake booster plunger mount - 15 - out of the brake pedal using a suitable tool.