volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Checking cooling system for leaks (Polo, Touran, Golf Plus, Eos, Tiguan, Scirocco, Golf, Golf Cabriolet) > < Coolant hose schematic diagram (Golf Plus, Eos, Scirocco, Golf, Touran, Polo, Golf Cabriolet)

Golf Mk6

Draining and filling with coolant (Golf Plus, Eos, Scirocco, Golf, Touran, Tiguan, Golf Cabriolet)
   
Draining and filling with coolant (Golf Plus, Eos, Scirocco, Golf, Touran, Tiguan, Golf Cabriolet)
Special tools and workshop equipment required
t  Refractometer -T10007-
t  Hose clip pliers -VAS 6340-
t  Cooling system charge unit -VAS 6096-

Draining
  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 filler cap on coolant expansion tank.
Golf Plus, Eos, Scirocco, Golf, Touran, Golf Cabriolet
–  Remove noise insulation.
   
–  Pull off retaining clip -arrow- and remove coolant hose from radiator.
Tiguan
–  Depending on vehicle equipment, remove noise insulation or skid plate → General body repairs, exterior; Rep. gr.50.
  N19-0276
–  Detach spring-type clip and pull off coolant hose -2-.
Disregard item -1-.
Continuation for all vehicles
  Note
Observe environmental regulations for disposal.
Filling
  Caution
Only distilled water may be used for mixing with coolant additives. The use of distilled water ensures optimum protection against corrosion.
  Note
t  The amount of water used in the coolant mixture has a great influence on its effectiveness. Because the water quality differs from country to country and even region to region, Volkswagen has decided to define the quality of the water to be used in the coolant system. Distilled water fulfils all requirements.
t  Use only coolant additives in accordance with the → Electronic parts catalogue (ETKA). Other coolant additives may reduce corrosion protection substantially. The resulting damage could lead to loss of coolant and subsequent severe damage to the engine.
t  The correct coolant solution ratio → Anchor helps prevent damage from freezing and corrosion as well as scaling. Moreover, the boiling temperature is raised. Therefore, the cooling system must be filled all year round with coolant additive.
t  Because of its higher boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.
t  The frost protection must be guaranteed to approx. -25 °C.
t  Frost protection must be guaranteed down to approx. -35°C in countries with Arctic climates.
t  The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The coolant additive concentration must be at least 40%.
t  If a stronger anti-freeze mixture is necessary due to harsher weather conditions, the coolant additive content can be increased. However, this is only permitted to 60% (antifreeze protection to about -40°C). Otherwise, the antifreeze protection will be reduced again and the cooling effect will be impaired.
t  If radiator, heat exchanger, cylinder head or cylinder head gasket is renewed, do not reuse old coolant.
t  The Refractometer -T10007A- is recommended for determining the current anti-freeze density.
Recommended mixing ratios (use only distilled water for mixing):
  N19-10240
Frost protection
to		Anti-freeze
proportion		Coolant additive → RemarkDistilled water → Remark
-25°C
-35°C		40 %
50 %		2.25 l
2.8 l		3.35 l
2.8 l

1)  The quantity of coolant can vary depending upon vehicle equipment.
Golf Plus, Eos, Scirocco, Golf, Touran, Golf Cabriolet
   
–  Press connection against radiator and slide retaining clip -arrow- into groove.
–  Install noise insulation.
Tiguan
  N19-0276
–  Push coolant hose -2- together with spring-type clip onto connection.
Disregard item -1-.
–  Depending on vehicle equipment, install noise insulation or skid plate → General body repairs, exterior; Rep. gr.50.
Continuation for all vehicles
With cooling system charge unit -VAS 6096-
–  Fill coolant circuit using cooling system charge unit -VAS 6096- → Operating instructions for cooling system charge unit VAS 6096.
Without cooling system charge unit -VAS 6096-
  N19-10240
–  Fill with coolant up to max. mark on expansion tank.
With or without cooling system charge unit -VAS 6096-
–  Fit expansion tank cap.
–  Turn off heater controls.
Vehicles with no auxiliary heater
–  Start engine and maintain an engine speed of about 2,000 rpm for about 3 minutes.
–  Run engine until radiator fan -V7- cuts in.
Vehicles with auxiliary heater
  Caution
The auxiliary heater must only be switched on when the coolant circuit is filled, described as follows:
  N19-0347
–  Connect Vehicle diagnosis, testing and information system -VAS 5051B- as follows:
–  Push diagnosis cable connector onto diagnosis connection in driver footwell.
–  Start engine and maintain an engine speed of about 2,000 rpm for about 3 minutes.
–  Press buttons one after the other on display for „Vehicle self-diagnosis“, „18 - Auxiliary heater“ and „03 - Final control diagnosis“.
–  Press right arrow button on display up to final control diagnosis for heater coolant shut-off valve -N279-.
–  Initiate final control diagnosis for heater coolant shut-off valve -N279-. Continue to maintain engine speed of approx. 2,000 rpm for about 1 minute.
–  Run engine until radiator fan -V7- cuts in.
Continuation for all vehicles
  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.
–  Check coolant level and top-up if necessary. When the engine is at normal operating temperature, the coolant level must be at the max. mark; when the engine is cold, between the min. and max. marks.
  N01-0590

Checking cooling system for leaks (Polo, Touran, Golf Plus, Eos, Tiguan, Scirocco, Golf, Golf Cabriolet) > < Coolant hose schematic diagram (Golf Plus, Eos, Scirocco, Golf, Touran, Polo, Golf Cabriolet)