Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Through exhaust fumes, which get into the passenger com‐
partment, for example, when driving in reverse through an
exhaust gas cloud.
♦ Fishy smell like coolant.
– From leak at cooling system of engine or of A/C system heater
core.
Note
If fishy odor occurs depending on temperature setting (weaker
with temperature setting “Cold“ than with temperature setting
“Warm“), check A/C unit heat exchanger for leaks (air does not
flow constantly through heat exchanger).
♦ Smells like a burned clutch.
♦ Evaporation from floor mats, decorative seat covers, etc.
♦ Rotten, mildewy, moldy or musty smell from plenum chamber.
– Due to various contaminants, such as leaves, pine needles,
etc. collecting.
– Due to water that cannot drain out of the plenum chamber.
Note
Check plenum chamber water drains. Refer to
⇒ “4.10 Plenum Chamber Water Drain, Checking and Cleaning“,
page 100 .
♦ Smell from air conditioner.
Note
♦
Odors originating in the heating and A/C unit can mainly be
detected in fresh air mode and recirculated air mode. If a smell
occurs only in fresh air or recirculation mode, the cause is
probably not the A/C unit.
♦
In the case of a leaking heat exchanger, the odor of the es‐
caping coolant mostly depends on the temperature setting.
With “Cold“ temperature setting, air does not flow through the
heat exchanger and the odor is not as strong.
– Due to too much condensation water in A/C unit.
Note
Check condensation drain. Refer to
⇒ “4.5 Condensation Water Drain Hose, Checking“, page 92 .
– Due to an old or heavily contaminated dust and pollen filter.
Note
Check dust and pollen filter. Refer to
⇒ “5.9 Dust and Pollen Filter“, page 138 .
– Due to deposits on evaporator fins.
Audi TT 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 01.2011
90 Rep. Gr.87 - Air Conditioning
To Next Page
Loading...
