Audi A4, S4 Introduction Controls and receptions of safe operation Current leaving and service The engine Systems of cooling, heating and the air conditioner Power supply systems, release and decrease in toxicity of the fulfilled gases Systems of an electric equipment of the engine Manual box of a gear change Automatic transmission Coupling, power shafts and differential Brake system Suspension bracket and steering Body - Onboard electric equipment    Specifications    Diagnostics of malfunctions of an onboard electric equipment - the general information