Audi A4: Fluids in the A/C system
Refrigerant in the A/C system
The sticker in the motor compartment provides
information about the type and amount of refrigerant
used in the vehicle's A/C system. The sticker
is located in the front section of the motor
compartment or at the front or back of the hood.
Warning: the A/C system must only
be serviced by qualified technicians.
Refrigerant type
Lubricant type
Refer to the service information
(only available for authorized Audi
dealers or authorized Audi Service
Facilities)
The A/C system must only be
serviced by qualified technicians.
Flammable refrigerant
Make sure all components are
disposed
of correctly and never install components in the vehicle that have
been removed from old vehicles or
taken from recycling.
Lubricant in the A/C system
The sticker in the motor compartment provides
information about the type and amount of refrigerant
oil used in the vehicle's A/C system. For the
refrigerant oil quantity, refer to the Technical Data.
WARNING
To ensure secure and safe operation, the A/C
system must only be serviced by qualified
technicians and certified technicians (SAE
standard J2845).
Tips
- Never repair the A/C system evaporator with
components from old vehicles or from recycling.
- New replacement evaporators for portable
A/C systems must be certified and labeled
as such, so that they comply with the SAE
standard J2842 HFO-1234yf and R744.
READ NEXT:
Convenience key
Applies to: vehicles with convenience key
Fig. 94 Center console: starting the engine
Requirement: the key must be in the vehicle.
Starting the engine
Press and hold the brake pedal
Starting to drive, stopping, and parking
Starting from a stop
Press and hold the brake pedal.
Start the engine.
Select "D" or "R".
Release the parking brake.
Release the brake pedal. The vehicle
SEE MORE:
Note
Camber cannot be adjusted.
Camber can be centered evenly within specified tolerance
range by shifting subframe.
Procedure
- Remove the noise insulation. Refer to
→ Body Exterior; Rep. Gr.66; Noise Insulation; Noise Insulation,
Removing and Installing.
- 
General Information
The support mode provides the vehicle electrical system with
voltage when the Battery -A- is removed or disconnected.
For more information. Refer to the Battery Charger -VAS5903-
Operating Instructions.
The support mode is used for the following situations:
Vehicle electrical