Audi A4 2001 - Page 107

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Note
♦ Restrictors with a modified hole have been installed at the fac‐
tory since November 1997 (yellow colored). The capacity was
increased by 50 g for vehicles with yellow colored restrictor.
♦ In order to distinguish between the two restrictor versions, the
one with the smaller hole (1.54 mm) is yellow colored. The
restrictor with the larger hole (1.83 mm) is not colored.
♦ The Audi A4 was equipped with different A/C compressors
depending on engine and production period. Exclusive use
was made at the start of production of Zexel / Valeo A/C com‐
pressors. As of MY 1996, Denso A/C compressors were grad‐
ually introduced for vehicles with 6-cylinder engines.
♦ Beginning the production year 2006, the name of the Zexel A/
C compressor was changed from Zexel to Valeo.
♦ Replacement restrictors with different holes (not colored, yel‐
low colored, red colored) are available. If a vehicle is equipped
with a different restrictor, add more or less refrigerant depend‐
ing on type (⇒ table). After charging, amend capacity stated
on label or affix label indicating new capacity.
♦ Depending on manufacturer, color of red restrictor may tend
more towards orange.
♦ As of November 1998, Audi A4 models have also been equip‐
ped with AWG condensers (initially approximately 10,000 ve‐
hicles, from vehicle identification number (VIN) 8DXA 065 253
to 8DXA 077 026). The specified capacity for vehicles with
these condensers differs from those with Showa condensers.
The condensers can be identified on the basis of certain char‐
acteristic features. Refer to ⇒ page 103 .
♦ If the condenser installed is replaced by one with a different
part number, check the capacity indicated on the label in the
vehicle and amend if necessary or affix a label with the correct
capacity over the existing one. Refer to ⇒ Heating, Ventilation
and Air Conditioning; Rep. Gr. 87 ; Description and Operation
and Electronic Parts Catalog (ETKA).
Distinguishing features
between Showa and AWG condensers
Different manifolds:
A - Manifold on Showa condenser
B - Manifold on AWG condenser
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3. Specifications 103