Volkswagen Touareg (2003 year). Manual - part 22

Checking water pump -V36-

Special tools and workshop equipment required
♦ Voltage tester -V.A.G 1527/B-

♦ Auxiliary measuring set -V.A.G 1594/C-

♦ Current flow diagram
Test prerequisite
• Fuse -16- -arrow- must be OK.
Test procedure

– Pull 2-pin connector -1- off coolant pump -V36- -2-.

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(+) and contact -2- to earth (-) using auxiliary cables from aux‐

iliary measuring set -V.A.G 1594C- . Pump must run.

If the pump does not start operating:
– Renew water pump -V36- .

1.9

Draining and filling coolant

Special tools and workshop

equipment required
♦ Refractometer -T10007-
♦ Drip tray -V.A.G 1306-
♦ Spring-type clip pliers -VAS

5024A-

♦ Adapter for cooling system

tester -V.A.G 1274/8-

♦ Torque wrench -V.A.G

1331-

♦ Cooling system charge unit

-VAS 6096-

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WARNING

Steam may escape when expansion tank is opened. Wear eye

protection  and  protective  clothing  to  avoid  eye  injuries  and

scalding. Cover cap with cloth and open carefully.

– Open cap on coolant expansion tank.
– Remove noise insulation. ⇒  General body repairs, exterior;

Rep. gr.  50 ; Body - front; Assembly overview - noise insula‐

tion .

– Place drip tray -V.A.G 1306- under vehicle.
– Disconnect coolant hoses -1- from water pump -V36- .

Note

Follow disposal regulations for coolant!

Filling

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♦

Use only coolant additive G12 plus in accordance with

„TL VW 774 F“. Identification: purple colour.

♦

G 12 plus and coolant additives marked „Conforming to

TL VW 774 F“ prevent frost and corrosion damage and scaling

and also raise boiling point of coolant. Therefore, the cooling

system must be filled all year round with frost and corrosion

protection additives.

♦

Because of its higher boiling point, the coolant improves en‐

gine reliability under heavy loads, particularly in countries with

tropical climates.

♦

Frost protection is required down to about -25°C (in countries

with arctic climates: down to about -35°C).

♦

The coolant concentration must not be reduced by adding wa‐

ter even in warmer seasons and in warmer countries. The

coolant additive concentration must be at least 40%.

♦

If for climatic reasons greater frost protection is required, the

amount of G 12 can be increased, but only up to 60 % (frost

protection to about -40 °C). Otherwise frost protection and

cooling effectiveness are reduced again.

♦

If radiator, heat exchanger, cylinder head or cylinder head

gasket is renewed, do not reuse old coolant.

♦

The Refractometer -T10007- is recommended for determining

the current anti-freeze density.

Recommended mixture ratios:

Frost protection

to

Anti-freeze

quantity

G 12

2)

Water

2)

-25 °C

-35 °C

4.0 l

4.5 l

4.0 l

4.5 l

5.0 l

4.5 l

2)  The quantity of coolant can vary depending upon vehicle equipment.

– Install coolant hoses and secure.

– Screw adapter for cooling system tester -V.A.G 1274/8- onto

expansion tank.

– Fill coolant circuit using cooling system charge unit -VAS

6096- ⇒  Operating instructions for cooling system charge unit

VAS 6096 .

1.10

Removing and installing radiator

Special tools and workshop equipment required
♦ Drip tray -V.A.G 1306-

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