Audi A4: Maintenance and Care
Audi A4 (B9) 2016-2025 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
- Wheels
- Wheels and Tires
- Glossary of tire and loading terminology
- New tires or wheels
- Tires and vehicle load limits
- Tire pressure monitoring system
- Care and cleaning
READ NEXT:
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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SEE MORE:
General information
Selecting the radio
Fig. 148 Center display: FM station list
Fig. 149 Center display: SiriusXM station list
Depending on the vehicle equipment, the radio
may support the FM, AM, and SiriusXM (satellite
radio) frequency bands. Using the HD Radio receiver*
also allows you to receive radio stations
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Connector Housings, Releasing and Disassembling
Information on Releasing and Disassembling Connector Housings
Note
Observe general notes for repairs on the vehicle electrical
system. Refer to
→ Chapter "Vehicle Electrical System, General Repair
Information".
Always use the release tools intended for the releasing
process. Un
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