Audi A4: Refrigerant Circuit
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit
- A/C System Repair Information
- Using Service Station
- Refrigerant Circuit, Flushing with Compressed Air and Nitrogen
- Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a
- Refrigerant Circuit, Determining Leaks
READ NEXT:
A/C System Repair Information
Air conditioning systems designed for refrigerant R12 are
only to be filled with refrigerant R134a if certain requirements
are fulfilled. Refer to
→ Chapter "Refrigerant Circuit, Convertin
General Information
Vehicles with a high-voltage system (hybrid vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- I
SEE MORE:
Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils
Approved Refrigerant Oils and Capacities
Note
As PAG (polyalkylene glycol) oil is highly hygroscopic
(attracts water), opened containers are to be immediately
resealed so as to be air-tight.
PAG oil from containers which have been open for a lengthy
period is no longer usable.
Refrige
Driver/Front Passenger Seat Adjustment Control Head -E470-/-E471-,
Removing and Installing
Special tools and workshop equipment required
Trim Removal Wedge -3409-
Removing
- Carefully pry the actuators -1 and 2-
from the retainer using the -3409-.
- Remove the seat side trim on the side sill side. Refer to
→ Chapter "Seat Side Trim on Side Sill Side, Removing and
Ins
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