Audi A4: Maintenance and Care
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
- 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.
Audi r
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!
P
SEE MORE:
Door Arrester, Removing and Installing
Removing
- Tape off the B-pillar in the door arrester area using adhesive
tape, so that the paint will not be damaged.
- Move the door window into the "closed" position.
- Remove the rear door trim panel. Refer to
→ Body Interior; Rep. Gr.70; Rear Door Trim Panels;
Radio Installation Instructions
Retrofitting Radio Systems
General Information
Before installing radios and telephone systems (radio
systems), disconnect the negative terminal of the Battery -A-.
Refer to
→Electrical Equipment; Rep. Gr.27.
Use the applicable wiring diagrams. Refer to
→ Wiring diagrams, Troubleshoo
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