radiator AUDI A6 2000 C5 / 2.G AHA ATQ Engines Cooling System Components User Guide

19-16

- Raise engine speed to approx. 2000 rpm for
approx. 5 minutes.

- Allow engine to idle until lower coolant hose on
radiator is hot.

- Check coolant level and top-off if necessary.
When engine is at normal operating
temperature, coolant level must be on MAX
mark. When engine is cold, coolant level must
be between MIN and MAX marks.

WARNING!

The cooling system is pressurized when the
engine is warm. When opening the expansion
tank, wear gloves and other appropriate
protection, cover the cap with a cloth and
open carefully to relieve system pressure
slowly.
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19-17

Radiator, removing and installing


Removing

- Remove front bumper.

Repair Manual, Body Exterior, Repair Group
63


- Drain coolant at drain plug (arrow) page 19
-11
.

Vehicles with automatic transmission - Disconnect coolant hoses at radiator, unhinge clamp from connection
flange (arrow).
- Disconnect connector from temperature switch at bottom-left of
radiator.
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Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37
- Remove ATF lines from radiator.
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19-18

All models

Vehicles with air conditioning
CAUTION! - Unbolt power steering hydraulic oil cooling line (arrows).
DO NOT open the air conditioning refrigerant circuit.Disconnect A/C refrigerant lines at brackets and support points
only. Avoid damage from bending. Refrigerant lines kink easily.

- Unbolt air guides at radiator -4- on left and right-sides.
- Unbolt retaining bolts -1- and -2- from condenser.
- Disconnect harness connector -3- at A/C pressure switch -F129-.
- Pull condenser upward out of retaining bracket, swing to side and hang
at right-front wheel using wire loop.
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19-19

All models

Installing
Installation is the reverse of removal, noting the following:
Vehicles with automatic transmission
Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37

Tightening torques - Release both radiator retaining bolts, pull up and remove (arrows).
- Tilt radiator toward front, lift up and remove.
- Fill up coolant page 19
-11
.
- Check ATF level.Component
Tightening torque
Condenser to radiator 10 Nm (7 ft lb)
Coolant line to radiator 10 Nm (7 ft lb)
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19-26

Coolant fan, checking


Test requirements

Test procedure
Fuse No. 34 OK Coolant Fan Control (FC) thermal switch -F18- OK
- Disconnect 3-pin harness connector from coolant Fan Control (FC)
thermal switch -F18- at bottom left of radiator.
- Switch ignition on.

- Bridge terminal -1- and terminal -2- of harness connector using
auxiliary cables from VW1594 connector test kit.
Coolant fan -V7- must run on 1st speed.
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pair&id=AUDI.B5.GE03.19.1