Audi A4: Checking and Filling
Audi A4 (B9) 2016-2026 Owner's Manual / Maintenance and Care / Checking and Filling
- Fuel
- Refueling
- Emissions control system
- Motor compartment
- Engine oil
- Cooling system
- Brake fluid
- Battery
- Safety precautions
- Charging the 12 volt vehicle battery
- Windshield washer system
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Fuel
Types of gasoline
The correct gasoline grade is stated on the inside
of the fuel filler door.
The vehicle is equipped with a catalytic converter
and must only be driven with unleaded gasoline.
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Refueling
Messages
The following messages may appear depending
on the vehicle equipment:
Messages
If the indicator light appears
with a corresponding
message, refuel the vehicle.
Tank system: malfunction!
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Emissions control
system
General information
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
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Settings
Telephone settings
Applies to: vehicles with telephone
Applies to: MMI: Select on the home screen:
PHONE > .
The following options may be possible, depending
on your mobile device:
Decline with text message
Edit voicemail number
Switching between two mobile devices
Requirement: phone 1 an
Playing media
Media sources
The following sources can be selected depending
on the vehicle equipment:
Alexa
USB device
Connect external device: you can connect external
devices via Bluetooth and use the Bluetooth
audio player, or you can connect
an external device directly to the Audi music
interface
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