Audi A4 Owners & Service Manuals

Audi A4: Summary

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 Cockpit

Fig. 1 Cockpit Door handle Central locking switch Memory function buttons Vent Lever for: Turn signals and high beams High beam assistant Audi active lane assist Traffic jam assist

 Indicator lights overview

Description The indicator lights in the instrument cluster blink or turn on. They indicate functions or malfunctions. Some warning and indicator lights turn on when you switch the ignition on and mus

 Display and operation

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 Cooling system

Coolant The engine cooling system is filled with a mixture of purified water and coolant additive at the factory. This coolant must not be not changed. The coolant level is monitored using the indicator light. However, you should occasionally check the coolant level. Messages The following messag

 A/C Compressor Regulator Valve -N280-, Removing and Installing

  Note Certain functions on the A/C Compressor Regulator Valve -N280- (for example, a stuck valve or a disruption in the coil) can lead to a complaint regarding the A/C compressor (A/C system doesn't cool, the evaporator ices over, etc.). If the cause is with the A/C Compressor Regulator

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