Audi Q7 2007 Repair Manual page 77

6 - Coolant hose and coolant pipe group with auxiliary heater
❑ Installed under left front fender. For removing and installing.
❑ Versions vary depending on vehicle equipment.
7 - Coolant Pump - V50-
❑ Depending on vehicle equipment, the Coolant Recirculation Pump - V50- is actuated by the respective
engine control module and by the Climatronic Control Module - J255- front A/C control head (via various
relays). Refer to Wiring diagrams, Troubleshooting and Component locations. Use the Vehicle Diagnostic
Tester via the "Guided Fault Finding" function.
The Coolant Recirculation Pump - V50- is incorporated into parking/auxiliary heater hosing.
Note
From MY 2011, this vehicle has
♦
a Start/Stop System for specific
engines as optional equipment.
Pay attention to the correct ver‐
sion, coding and adapting for the
Climatronic Control Module -
J255- front A/C control head on
these vehicles. Refer to the Parts
Catalog. Use the Vehicle Diag‐
nostic Tester via the "Guided
Fault Finding" function.
On vehicles with a start/stop sys‐
♦
tem, the Coolant Recirculation
Pump - V50- is turned on by the
climatronic control module -
J255- during the stop function
when more heating output is re‐
quired in the passenger com‐
partment. Use the Vehicle Diag‐
nostic Tester via the "Guided
Fault Finding" function.
On a vehicle with a start/stop
♦
system and a parking-/auxiliary
heater, pay attention to the cor‐
rect version, coding and adapt‐
ing of the parking-/auxiliary heat‐
er (for the Auxiliary Heater
Control Module - J364- ). Refer
to the Parts Catalog. Use the Ve‐
hicle Diagnostic Tester via the
"Guided Fault Finding" function.
8 - Parking/Auxiliary heater
❑ On vehicles with a diesel engine through MY 2007, the auxiliary heater is always installed and the parking
heater is optional equipment.
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
❑ Removing and Installing.
with respect to the correctness of information in this document. Copyright by AUDI AG.
Note
From MY 2009, certain vehicles
♦
with a 6-cylinder TDI engine
without an "auxiliary heater",
have an Auxiliary Heater Heating
Element - Z35- instead of a fuel-
driven auxiliary heater installed
depending on the emissions
standard (running change de‐
pending on the engine).
Heating, Ventilation and Air Conditioning - Edition 04.2013
6. Incorporation of the A/C System in Vehicle Coolant Circuit
Audi Q7 2007 ➤
71