How to enter the audio password for Audi A4?

2 Answers
DiRowan
07/24/25 8:39pm
Press and hold the SCAN and RDS buttons simultaneously until the SAFE value changes to 1000, then begin entering the password. First, press and hold the knob, then rotate it to start entering the password. After entering the password, press and hold the knob again and rotate it to the OK position to confirm the password entry. If the wrong key is pressed for the 10th time, the anti-theft system will be triggered, the HELP message will appear on the display, the audio system indicator will light up, and the audio system will become completely inoperative.
Was this review help?
7
4
Share
MacSilas
08/11/25 11:13am
Entering the audio code for an Audi A4 is actually quite simple. After turning on the car's power, the audio system will automatically display an interface prompting you to enter the code, usually showing "Enter Code" or similar text. Use the numbered buttons on the audio panel to input your four-digit code—each button is labeled with numbers 1-9, similar to dialing a phone number. Once done, remember to press the confirm button, sometimes labeled ‘OK’ or ‘Enter’. If you forget the code, don’t panic—you can check the owner’s manual or look for a sticker in the glove compartment. Contacting an Audi dealership with your VIN can also help retrieve it. Key point: Avoid entering the wrong code too many times, as the system may lock and require professional unlocking. The interface may vary slightly between different model years—older A4s may use a rotary dial while newer ones might have a touchscreen—but the logic remains similar. I’ve succeeded with this method before and recommend saving the code in your phone’s notes to avoid awkward situations.
Was this review help?
18
3
Share
Expand All
More Forum Discussions

Why Should Motor Vehicles Slow Down in Rainy Weather?

Because the road is slippery in rainy conditions, the braking distance increases, and visibility is reduced, motor vehicles should slow down when driving in the rain. Below are precautions for driving in rainy weather: 1. Maintain good visibility: In addition to driving cautiously, promptly turn on the windshield wipers and use low-beam headlights and fog lights when the weather is dim. 2. Prevent wheel skidding: Rainwater on the road forms a "lubricant" between the tires and the road surface, reducing the vehicle's braking performance and increasing the risk of skidding. 3. Drive slowly in low gears: Regardless of road width or condition, use second or third gear when driving in the rain, keeping the speed below 30 or 40 km/h, and be mentally prepared to take emergency measures. 4. Avoid getting stuck in water: When encountering flooded roads, such as under overpasses or deep tunnels, first stop to check the water depth. If the water exceeds the exhaust pipe, it may cause the vehicle to stall; if it exceeds the bumper, water may enter the vehicle. 5. Do not restart the vehicle after stalling: If the engine stalls due to water, do not attempt to restart it. Instead, leave the vehicle in place and wait for a tow. 6. Maintain safe following distance: Do not follow large vehicles too closely, as they block visibility, and a path passable for large vehicles may not be passable for smaller ones. 7. Watch for pedestrians: Pedestrians holding umbrellas and cyclists wearing raincoats have limited visibility, hearing, and reaction time. 8. Turn on lights promptly: In heavy rain with extremely low visibility, turn on the headlights, position lights, and taillights, and move the vehicle off the road or park it in a safe place.
12
1
Share

Should the motorcycle fuel switch be up or down?

Different brands and models of motorcycles have different fuel tank switches, and you need to check the markings on the fuel tank switch to determine. Below are specific details about motorcycle fuel: 1. Markings: Generally, "ON" or a full cup of water symbol represents the main fuel tank, while "RES" or a half cup of water symbol represents the reserve tank. Typically, the main tank is used when the switch is down, the reserve tank is used when the switch is up, and the fuel supply is off when the switch is parallel. 2. Switch: Move the fuel tank switch lever and observe which marking the arrow on the lever points to, indicating which fuel tank function is being used. In reality, there is only one fuel tank; the so-called main and reserve tanks are simply two different fuel outlets at varying heights on the fuel tank switch. Moving the lever up engages the reserve tank. After refueling, the lever should be moved down; otherwise, using the reserve tank continuously will deplete the fuel without notice.
12
1
Share

Can Pickup Trucks Be Equipped with ETC?

Pickup trucks cannot be equipped with the ETC system because they are classified as trucks, and only passenger vehicles are eligible for ETC installation. Benefits of Installing ETC: Time-saving: Eliminates the hassle of waiting in queues; Green and eco-friendly: Promotes low-carbon travel by allowing vehicles to pass through toll stations without stopping, reducing noise and exhaust emissions, thus minimizing pollution; Reduced wear and tear: Saves costs by decreasing the frequency of vehicle starts and brakes, lowering wear and fuel consumption. Users also enjoy a 5% discount on toll fees; Improved efficiency: ETC lanes can theoretically increase vehicle throughput by 2-3 times, making traditional ETC systems more updated, faster, and technologically advanced. Compared to license plate payment, ETC technology is more mature and advantageous. ETC Installation Locations: For small vehicles such as sedans and minivans, the ETC card and OBU device are installed in the upper middle part of the front windshield. For large vehicles like trucks and buses, the installation location is in the lower middle part. ETC Installation Requirements: The height should be no less than 1.2 meters and no higher than 2.5 meters; the installation angle N should be between 30º and 90º (the angle between the surface of the electronic tag and the horizontal plane).
20
4
Share

What is the difference between 195 and 205 tires?

195 tires and 205 tires differ in: 1. Tire size: The diameter of a 195 tire is 634.5mm, while a 205 tire has a diameter of 631.9mm, making the 195 tire 2.6mm taller than the 205. 2. Aspect ratio: At the same tire height, the 205 has a lower aspect ratio than the 195, meaning better handling performance. 3. Contact patch: The 205 tire is 10mm wider than the 195, with about 5% more rolling resistance. At low speeds without considering wind resistance, the 205 naturally consumes 5% more fuel than the 195.
18
3
Share

How to Check a Used Car?

Here are some tips for checking if a car is used: 1. Check the manufacturing date: If you come across a car that has been used for a long time but has an unusually low mileage, there might be an issue with the car. 2. Inspect the tire wear: New tires have wire-like marks on the tread and hair-like fibers on the sidewalls, which usually wear off after 50-100 kilometers. 3. Examine the engine compartment: Areas in a car that has been used for some time tend to accumulate dirt and grime that are hard to clean. It's best to inspect and clean these areas regularly to prevent long-term buildup that may become impossible to clean later.
13
1
Share

What are the reasons for the sudden failure of the reversing camera to display?

The reasons for the sudden failure of the reversing camera to display are: 1. Poor line contact: The black screen phenomenon of the reversing camera is most likely due to poor line contact. It is necessary to promptly check the connection between the lines and the vehicle's installation to see if there is any loose connection. If so, it will cause abnormal imaging of the reversing camera, and in this case, simply reconnecting it properly will suffice. 2. Poor photosensitivity: The reversing camera has been used for too long, resulting in poor chip photosensitivity, and even the appearance of many snowflake-like phenomena. It needs to be inspected and repaired at a repair shop or directly replaced.
12
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.