ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
9.4
Removing and installing PTC heater el‐
ement 3 [Z132], all-wheel drive
9.4.1
Removing and installing PTC heater el‐
ement 3 [Z132]
Removing
DANGER
High voltage can cause fatal injury.
Danger of severe or fatal injuries from electric shock or elec‐
tric arcs.
– Have a high-voltage technician (HVT) or a high-voltage
expert (HVE) de-energise the high-voltage system.
– ⇒ Rep. gr. 93; De-energise high-voltage system.
– Remove air intake unit of heater and air conditioning unit
⇒ Rep. gr. 87; Removing and installing air intake unit of
heater and air conditioning unit.
– ⇒ Rep. gr. 19; Cooling system/coolant; Draining coolant
– Detach clamps -3-, and pull off coolant hoses -2-.
– Unscrew nut -2-.
– Remove potential equalisation line -3-.
– Unclip cable retainers of electrical connectors -5-.
– Disconnect electrical connectors -1- and -4-.
– Detach electrical connector -2- from bracket -1-.
172
Rep. gr.87 - Air conditioning system
ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
– Detach retaining clip -3- of coolant hose -5- from bracket.
– Unscrew bolts -4-.
– Remove heater element (PTC) 3 -Z132--1-.
Installing
Install in reverse order of removal, observing the following:
– Observe installation markings on heater element (PTC) 3
-Z132- and coolant hoses.
– Check screw connections of potential equalisation line, and
clean them if necessary ⇒ Electrical system; Rep. gr. 97;
Cleaning contact surfaces; Cleaning contact surfaces.
Important
•
Contact surfaces must be free of dirt, rust and grease.
– Connect potential equalisation line -3-, and tighten nut -2-.
– Connect electrical connectors -1- and -4-.
– ⇒ Rep. gr. 19; Cooling system/coolant; Filling cooling system
WARNING
High voltage can cause fatal injury.
Danger of severe or fatal injuries from electric shock or elec‐
tric arcs.
– Have a high-voltage technician (HVT) or a high-voltage
expert (HVE) re-energise the high-voltage system.
– ⇒ Rep. gr. 93; Re-energising high-voltage system.
Tightening torques
♦ ⇒ Rep. gr. 87; Assembly overview – high-voltage heater
(PTC)
9. Coolant circuit
173
2024 VW ID.4 Owner's Manual
