Audi Q3: Safety Precautions
Handling Refrigerant Safety Precautions
The assemblies and piping system of the air conditioner are
filled with the following refrigerant:
1.1.1.2 Tetrafluorethane (CF3-CH2F
or CH2F-CF3)
Currently, this refrigerant is known under the following
trade names R134a, H-FKW 134a, SUVA 134a and KLEA 134a (other
trade names may be used in other countries).
The following safety measures should be observed for these
refrigerants (additional guidelines apply in individual
countries).
Caution
Refrigerant may pose health risk!
- For repair work on an open refrigerant circuit,
first discharge the refrigerant circuit. Refer to
→ Refrigerant R134a Servicing; Rep. Gr.87; Refrigerant
Circuit. (Refrigerant R134a, Servicing;
Refrigerant Circuit, Using Service Station).
- Only work on refrigerant circuit in well-ventilated
rooms (workshops). Ensure that there are no
working-pits, basement staircases or shafts within five
meters of the circumference.
WARNING
There is a risk of suffocating due to a
refrigerant/air mixture after discharging refrigerant.
- Switch on the exhaust gas ventilation system.
- Escaping refrigerant is color- and odorless and also
heavier than air, thus displacing oxygen. If refrigerant
gas escapes, there is a risk of suffocating in poorly
ventilated areas and in workshop pits - even if it is
not noticeable.
Risk of dry coughing and nausea due to toxic
chemical decomposition products from the refrigerant
gas.
Do not smoke, weld, or hard- or soft-solder in areas
exposed to refrigerant. The high temperature of a naked
flame or hot objects causes decomposition of refrigerant
gas. The resulting decomposition products are toxic.
Risk of eye injury!
- Keep an eye bath on hand.
- If liquid refrigerant has come in contact with your
skin and eyes, immediately flush with cool water for 15
minutes.
- Then apply eye drops and consult a doctor
immediately even if no pain is felt.
- Inform the doctor which type of refrigerant caused
the freezing.
Intensive exposure to refrigerant on unprotected
parts of the body will result in frostbite. Avoid
contact with liquid refrigerant or refrigerant vapors!
- Protect hands by wearing rubber gloves.
- Protect eyes by wearing protective glasses.
- If liquid refrigerant has come in contact with any
other body part, immediately flush with cool water for
15 minutes.
Start/Stop System Safety Precautions
WARNING
On vehicles with the Start/Stop System, the engine
could start automatically and cause serious personal
injury.
- If the Start/Stop System is activated (recognizable
by a message in the instrument cluster), it is possible
to start the engine automatically.
- Make sure the Start/Stop System is deactivated when
working on the vehicle (switch off ignition and turn on
again as needed).
Road Test with Testing Equipment Safety Precautions
If it is necessary to use testers and measuring instruments
during a road test, observe the following:
WARNING
There is a risk of accident due to distraction and
testing- and measuring equipment that is not secured
properly.
The passenger airbag could pose a danger if it
deploys during an accident.
- Operating testing equipment while driving is a
distraction.
- Unsecured testing equipment increases the risk of
injury.
Always attach testers and measuring instruments to
the back seat and have them operated from there by a
second person.
Coolant System Safety Precautions
When working on the coolant system, observe the following:
WARNING
There is a risk of scalding from hot steam and
coolant.
- Coolant system is under pressure. The coolant
temperature can be higher than 90 ºC (194 ºF) when the
engine is warm.
- Reduce the pressure and temperature before working
on the coolant system. Refer to
→ Engine Mechanical; Rep. Gr.00; Safety Precautions;
Coolant System Safety Precautions.
- Open the cap on the coolant expansion tank and
release the pressure in the coolant system. Refer to
→ Engine Mechanical, Fuel Injection and Ignition; Rep.
Gr.19; Cooling System/Coolant; Coolant, Draining and
Filling.
Caution
Danger of overheating due to an incorrectly
installed sealing cap.
The sealing cap must engage audibly and by touch
when closing.
READ NEXT:
Even slight contamination can lead to defects. Therefore
observe the following rules for cleanliness when working on the
A/C system:
Immediately seal the open lines and connections with clean
Heating Output, Checking
Note
This repair manual only outlines the checking procedure.
Perform the detailed function test for the heating as described
in the Guided Fault Finding using
SEE MORE:
Front Passenger Occupant Detection Sensor -G128-, Removing and Installing
Note
The passenger occupant detection sensor is only installed in
the front passenger seat.
Special tools and workshop equipment
required
Wiring Harness Repair Set - Hot Air Blower -VAS1978/14A-
Only for
The following settings depend on the vehicle
equipment.
Applies to: MMI: Select on the home screen:
VEHICLE > Light & Visibility > Exterior lighting.
Automatic headlights
You can adjust the following settings in the Automatic
headlights menu:
Activation time - You can adjust if the hea