Audi Q7: Safety Precautions
Safety Precautions when Working on Start/Stop System
WARNING
The engine could start automatically and cause serious personal injury on vehicles with a Start/Stop System.
- The engine may start automatically on vehicles with the Start/Stop System activated (recognizable by a message in the instrument cluster).
- Make sure the Start/Stop System is deactivated when working on the vehicle (switch off ignition and turn on again as needed).
Safety Precautions during Road Test with Testing Equipment
If testing equipment must be used during a road test, observe the following:
WARNING
There is a risk of accident due to distraction and testing equipment that is not secured properly.
There is a risk that the front passenger airbag may deploy during an accident.
- Operating testing equipment while driving is a distraction.
- Unsecured testing equipment increases the risk of personal injury.
Always attach testers and measuring instruments to the back seat and have them operated from there by a second person.
Safety Precautions when Working on Cooling System
When working on the cooling system, observe the following:
WARNING
There is a risk of scalding from hot steam and coolant.
- Cooling system is under pressure. The coolant temperature can be higher than 90 ºC (194 ºF) when the engine is warm.
- To reduce the pressure, cover the coolant reservoir cap with cloths and then open it carefully.
Caution
Danger of overheating due to an incorrectly installed cap.
The cap must engage audibly and by touch when closing.
Safety Precautions when Handling Refrigerant
The assemblies and line system of the A/C system are filled with the following refrigerant:
1.1.1.2 Tetrafluorethane (CF3-CH2 For CH2F-CF3)
This refrigerant is currently 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 precautions should be observed for this refrigerant (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.
- Only work on the refrigerant circuit in well-ventilated areas. Ensure that there are no work pits, basement staircases or shafts within a five meter radius.
WARNING
There is a risk of suffocating by a refrigerant/air mixture after discharging refrigerant.
- Switch on the exhaust extracting system.
- Escaping refrigerant is color- and odorless and also heavier than air, thus displacing oxygen. If refrigerant gas escapes, there is a risk of suffocation 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 of the refrigerant gas.
Do not smoke, weld, or hard- or soft-solder in areas exposed to refrigerant. The high temperature of an open 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 the eyes, thoroughly flush eyes with water for approximately 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.
Intense 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 eyewear.
- If liquid refrigerant has come in contact with any other body part, thoroughly flush with cool water for approximately 15 minutes.
