Preparing the car for work. Disconnect the negative battery terminal.
Removing the instrument panel, article - Removing and installing the instrument panel
Draining the coolant - Replacing the engine coolant Lada Largus
For vehicles equipped with air conditioning, unload the refrigerant from the air conditioning system in accordance with the operating instructions for the service equipment.
With a head of 13, we unscrew the two bolts 1, Figure 1, of the lower fastening of the amplifier 2 of the instrument panel cross member to the base of the body.
With a 13 head, unscrew the two nuts 1, figure 2, of the upper fastening of the amplifier 2 of the instrument panel cross member.
Disconnect block 3 of the wiring harness and remove amplifier 2
Using a clamp puller, we compress and shift two clamps 4, Figure 3.
Remove the hoses inlet 2 and outlet 1 of the heater from the nozzles 3 of the heater radiator.
Using a Torx T20 head, we unscrew two screws 2, Figure 4, fastening the air distribution unit 1 to the cross member 3.
Using a Torx T20 head, unscrew screw 4, Figure 5, fastening the left front air duct and remove the air duct, similarly remove the right air duct.
With a 13 head, we unscrew two screws each 2 fastening the cross member 1 of the instrument panel on the right and left, remove the cross member.
For vehicles equipped with air conditioning: from the engine compartment with a 10 head, unscrew two bolts 1, Figure 6, fastening the pipelines to the evaporator, disconnect the connections and install technological plugs on the pipelines and the evaporator unit.
Disconnect the wiring harness pads from the fan, additional resistor.
Remove the heater block assembly with the heating, air conditioning and ventilation control unit.
Install
Installation is carried out in the reverse order of removal, while:
- for vehicles equipped with an air conditioning system: remove the plugs from the pipelines and the evaporator unit, install new sealing rings on the pipelines.
Apply compressor oil to the sealing rings;
- evacuate the air conditioning system and load the system with refrigerant, according to the operating instructions for the service equipment.
Check the performance of the heating, air conditioning and ventilation system.
Disassembling the heater
Remove the heating, air conditioning and ventilation control unit by disconnecting the damper drive rods from the heater unit.
Remove the foam seals 2, Figure 7.
Using a Torx T20 head, unscrew two screws 3 and remove the nozzle bracket 1.
With a Torx T20 head, unscrew the screw 4, and remove the inlet 7 and outlet 8 pipes of the radiator 6 of the heater.
Using the Torx T20 head, unscrew the two screws 5, squeeze out the three latches, remove the radiator 6 from the heater housing and drain the remaining coolant.
We unscrew six screws 1, Figure 8, and separate the heater unit into two parts.
We remove the evaporator 1, Figure 9, from the heater block.
Assembly
Assemble the heater block in reverse order, while:
- - install new foam seals;
- - install new sealing rings on the pipes of the heating system.
Removal and installation of elements of the ventilation and heating system
Removing the heater core
Drain the coolant.
Remove the visor, instrument cluster and the central lining of the floor tunnel.
With a 13 head, we unscrew two bolts 1, Figure 10, fastening the amplifier 2 of the instrument panel cross member to the base of the body.
With a 13 head, unscrew two nuts 1, Figure 11, of the upper fastening of the amplifier 2 of the crossbar through the window in the instrument panel, disconnect the block 3 of the wiring harness and remove the amplifier 2.
Using a Torx T20 head, unscrew screw 3, Figure 12, and disconnect the inlet 2 and outlet 1 pipes from the radiator 4 of the heater.
Using a Torx T20 head, unscrew two screws 6, unscrew three clamps 5 and remove the radiator 4 from the heater housing.
Installation
Install the heating radiator in the reverse order of removal, while:
- install new sealing rings on the pipes of the heating system.
Removing the additional heater fan resistor
The auxiliary heater fan resistor is located on the heater housing on the pedal block side.
Remove the instrument panel.
Disconnect the block 1, figure 13, of the wiring harness, unscrew the screw 2 securing the resistor 3 with the Torx T20 head, remove the resistor from the heater unit.
Installation
Install the removed parts in the reverse order of removal.
Removing the heater fan
Remove the instrument panel.
Set interior air distribution switch knob to 
.
Disconnect wiring harness 1, figure 14.
Pressing the latch 2, turn the fan 3 clockwise by a quarter of a turn and remove it from the heater housing.
Installation
Install the heater fan in the reverse order of removal.
Removing the heating, air conditioning and ventilation control unit
Remove the instrument panel center trim.
Using a Torx T20 head, unscrew the two screws 1, Figure 15, securing the control unit 3 to the instrument panel, compress the latches 2 and remove the unit.
Disconnect connector 4, figure 16, instrument panel wiring harness.
Disconnect the damper drive rods from the control unit
Install the heating, air conditioning and ventilation control unit in reverse order.
Replacing the cabin filter
The cabin air filter is located in the heater unit under the instrument panel on the glove box side.
Press the latch 3, Figure 18, remove the cabin filter 2 2, located in the heater housing 1 from the side
Install a new cabin filter element
Most of the cars of this brand do not have a cabin filter