Leon Mk1
| Inner components of auxiliary heater |
| 1 - | Cover for auxiliary heating control unit -J364-. |
| 2 - | Temperature sensor -G18- |
| q | removing and fitting → Chapter |
| 3 - | Overheating sensor -G189- |
| q | removing and fitting → Chapter |
| 4 - | Combustion tube |
Note| Figure shows version for vehicles with petrol engine and fine filter in fuel line. |
| q | removing and fitting → Chapter |
| 5 - | Heat exchanger |
| q | removing and fitting → Chapter |
| 6 - | 7 Nm |
| q | 3 off |
| 7 - | Retaining spring |
| 8 - | 4 Nm |
| 9 - | Seal |
| q | Must be renewed after every opening. |
| 10 - | Cover |
| q | removing and fitting → Chapter |
| 11 - | Coolant connection |
| q | Mark fitting position. |
| 12 - | 4 Nm |
| 13 - | Retaining plate |
| 14 - | Coolant connection |
| q | Mark fitting position. |
| 15 - | Retaining clip |
| 16 - | Glow plug with flame monitoring -Q8- |
| q | Ensure proper seating |
| q | Removing and installing → Chapter is possible only on vehicles with petrol engine. |
Note| On vehicles with diesel engine, a fuel pre-heating heater element -Z66- is permanently installed on the combustion tube. The wires are connected to wires of glow plug with flame monitoring -Q8-. With this version, the entire combustion tube must be renewed if the glow plug with flame monitoring -Q8- is defective. |
| 17 - | Burner |
| q | removing and fitting → Chapter |
Note| t | With permanently installed fuel shut-off valve -N109- in the fuel line. The fuel shut-off valve -N109- is only intended for the version installed on vehicles with diesel engine. |
| t | The fuel shut-off valve -N109- prevents the fuel from entering the combustion chamber when the auxiliary heater is switched off. The metering pump -N109- has a bypass hole for releasing pressure in the fuel line between the fuel shut-off valve -V54- and the metering pump -V54-. |
| t | Make sure that the genuine part numbers are correct. |
| t | Check fuel shut-off valve -N109- with vehicle diagnosis, testing and information system -VAS 505X- or later model. |
| 18 - | Combustion air blower -V6- |
| q | The combustion air blower -V6- and housing are one component and cannot be dismantled. |
| q | removing and fitting → Chapter |
| 19 - | Auxiliary heater control unit -J364- |
| 20 - | 4 Nm |
| q | 4x |
