SEAT Workshop Service and Repair Manuals > Leon Mk2 > Heating, ventilation, air conditioning system | Supplementary heating | Aux. heater/heater booster | Auxiliary heater -D3W- (supplementary heater), vehicles: ? 05.00 | Connecting auxiliary heater -D3W- to coolant circuit

Connecting auxiliary heater -D3W- to coolant circuit

WARNING

Danger of scalding injuries.

When the engine is warm, the coolant temperature may be above 100 °C. The cooling system is pressurised.

If necessary, release pressure and reduce temperature before carrying out repairs.

Note

Check coolant circuit after working on it → Rep. Gr.19.

The arrows in the illustration show the coolant flow direction.

1 -	Heat exchanger (standard)

2 -	2nd heat exchanger (extra equipment)

3 -	Auxiliary heater

4 -

Engine

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