Passat Syncro Wagon V6-2.8L (ATQ) (2000)
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Replace radio unit.
Section 3b - Problems at antenna system, Diversity Antenna (Touareg, Passat W8)
If concern is only AM poor / no reception:
Locate AM antenna amplifier.
Touareg: located above left side window.
Passat W8: Sedan above rear window.
Passat Wagon: located on left rear window.
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Check for proper connections at amplifier both from diversity box and to glass.
If connection issue is at glass or on glass:
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Glass must be replaced.
If connection problem to amplifier:
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Repair connection (replace cable or amplifier).
If no apparent connection problems:
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Replace amplifier.
If concern is poor FM reception:
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Disconnect all amplifiers, tune radio to high-powered station for your area.
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Connect amplifiers one at a time.
If reception is indicated:
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Disconnect that amplifier and move on to next amplifier.
If at any point in reconnecting amplifiers there is a loss in reception and there are no connection issues:
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Replace that amplifier and check again.
If there is no reception change when disconnecting and reconnecting all amplifiers:
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Replace diversity/antenna selection box.
Jetta / Golf / Passat (non W8) - Antenna system (Amplified Antenna Mast)
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Check connections at antenna base.
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Check for corrosion at mounting.
If corrosion is found:
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Clean mount and apply anti-seize gel to mounting.
If concern is no AM and/or little or poor AM/FM reception:
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Replace antenna base.