air condition AUDI A4 2001 B5 / 1.G Technical Features Design And Function
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Additional heater
Heater/AC
The Audi A4 can optionally be equipped with
an additional heater for coolant.
Its mode of operation corresponds to the
systems in use previously.
The additional heater warms the heating-
system heat exchanger in the air conditioner
unit via the cooling-water circuit.
The cut-in time is ”programmed” via the dash
panel insert.
Flame sensor
Fan
driveDiffuser
Fuel tank Combus-
tion air Control and heater
unit for heating
system J162
Heating system
heat exchanger
Exhaust
gas Combustion chamber Glow plug
Fuel pump
SSP254_023
SSP254_097