Removing And Installing Rear Left Footwell Heater Element Z42 / Rear Right Footwell Heater Element Z43 - Audi Air conditioning 2003 A8 Workshop Manual

– Screw out the 2 bolts -A-.
– Remove the front operating and display unit, Climatronic con‐
trol unit -J255- from the centre console.
– Release the fasteners of the connector -E- by pressing the
retainer tabs -G- and unplug this connector.
– Wait 30 s (to protect the electronics in the front operating and
display unit, Climatronic control unit -J255- ).
– Release the fasteners of the connectors -A- to -D- by pressing
the retainer tabs -G- and unplug the connectors.
– Release and unplug the connector -F-.
Installing
Install in reverse order.
– Interrogate the fault memory of the front operating and display
unit, Climatronic control unit -J255- and erase any faults dis‐
played ⇒ "Guided fault-finding" function of vehicle diagnostic,
testing and information system VAS 5051.
– Perform air conditioner basic setting, encoding, adaption and
final control diagnosis ⇒ "Guided fault-finding" function of ve‐
hicle diagnostic, testing and information system VAS 5051.
8.8 Removing and installing rear left foot‐
well heater element -Z42- / rear right
footwell heater element -Z43-
Note
The rear left footwell heater element -Z42- and the rear right
♦
footwell heater element -Z43- are actuated by the front oper‐
ating and display unit, Climatronic control unit -J255- by way
of a signal wire. Actuation is displayed in the measured value
block ⇒ "Guided fault-finding" function of vehicle diagnostic,
testing and information system VAS 5051.
The supplementary heater element consists of a control unit,
♦
a temperature sensor and at present 4 transistors with heat
sinks which generate the heat and supply it to the passing air
flow.
♦ The supplementary heater element is only fitted on vehicles
with a rear Climatronic operating and display unit -E265- in the
vent -C- (optional extra).
Removing
– Switch off ignition.
– Remove the left/right seat ⇒ Body Repairs; Rep. gr. 72
8. Components for control and regulation of air conditioner located in passenger compartment
Air conditioning - Edition 09.2010
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Audi A8 2003 ➤
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