The correct operation of the heating in VW Sharan depends on many factors. Among other things, from the electric liquid circulation pump.
A damaged electric water pump prevents proper heating due to the insufficient flow of liquid around the heater.

You can buy the liquid pump here: [ Ссылка ]

See also:
How to clean the turbocharger: [ Ссылка ]
How to drive without an engine booster: [ Ссылка ]
How to connect webasto briefly: [ Ссылка ]
Engine booster heater not working: [ Ссылка ]

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