Audi A6 Typ 4G: Catalytic converter
Applies to: vehicles with gasoline engine
It is very important that your emission control system (catalytic converter) is functioning properly to ensure that your vehicle is running in on environmentally sound manner.
- Always use lead-free gasoline.
- Never run the tank down all the way to empty.
- Never put too much motor oil in your engine.
- Never try to push- or tow-start your vehicle.
The catalytic converter is an efficient "clean-up" device built into the exhaust system of the vehicle.
The catalytic converter burns many of the pollutants in the exhaust gas before they are released into the atmosphere.
The exclusive use of unleaded fuel is critically important for the life of the catalytic converter and proper functioning of the engine.
WARNING
The temperature of the exhaust system is high, both when driving and after stopping the engine.
- Never touch the exhaust tail pipes once they have become hot. This could result in burns.
- Do not park or operate the vehicle in areas where the hot exhaust system may come in contact with dry grass, brush, fuel spill or other material which can cause a fire.
- Do not apply additional undercoating or rustproofing on or near the exhaust manifold, exhaust pipes, catalytic converter or heat shields. During driving, the substance used for undercoating could overheat and cause a fire.
Note
- Be aware that just one tank filling with leaded fuel will already seriously degrade the performance of the catalytic converter.
- Do not exceed the correct engine oil level.
- Do not drive until the fuel tank becomes
completely empty. The engine could misfire.
Unburned fuel could also get into the exhaust system and this could cause the catalytic converter to overheat.
- Do not switch off the ignition while the vehicle is moving.
- Do not continue to operate your vehicle under these conditions, as otherwise fuel can reach the catalytic converter. This could result in overheating of the converter, requiring its replacement.
- To assure efficient operation of the Emission
Control System:
- Have your vehicle maintained properly and in accordance with the service recommendations in your Warranty & Maintenance booklet.
- Lack of proper maintenance as well as improper use of the vehicle will impair the function of the emission control system and could lead to damage.
For the sake of the environment
Even when the Emission Control System is operating properly, the exhaust gas can have a sulfur-like exhaust gas smell under some operating states. This depends on the sulfur content of the fuel being used. Using a different brand of fuel may help, or filling the tank with lead-free super grade gasoline.
