2024 Audi A4 Brake System Guide

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2024 Audi A4 Brake System Owner’s Manual 

The 2024 Audi A4’s brake system maximizes vehicle control and safety with solid stopping power, fast braking, and modern features including ABS and computerized brake-force distribution to minimize wheel locking.

2024 Audi A4 Sedan Specs, Price, Features, Mileage and Review

Brakes

General information
You can apply the vehicle’s brakes using the brake pedal.

Operating noise
Noise may occur when braking depending on the speed, braking force, and outside conditions such as temperature and humidity.

Braking Effect

The response time from the brakes depends on the weathearnd environmental conditions. To ensure the optimal braking effect, the brake system is cleaned at regular intervals. This is done by applying the brake pads to the brake rotors for a short period of time when driving at high speeds when the windshield wipers are switched on.

If the brake system becomes damp, for example after driving in heavy rain, the braking effect may be delayed. Other factors that could temporarily increase the response time of the brakes include:

  • Wet conditions
  • Low temperatures, ice, and snow
  • Roads covered in salt
  • Dirty brake pads

Corrosion
Corrosion may form on the brake rotors if there is no heavy braking, if the vehicle is not driven for long periods of time, or if the vehicle is not driven frequently or for long distances. In this case braking heavily several times while driving at high speeds can clean the brake rotors.

Brake pads
New brake pads do not achieve their full braking effect during the first 250 miles (400 km). They must be “broken in” first. However, you can compensate for the slightly reduced braking force by pressing firmly on the brake pedal. Avoid heavy braking during the break-in period.

Brake pad wear depends largely on the way the vehicle is driven and on operating conditions.

Brake pad wear increases when driving frequently in the city or short distances or when using a very sporty driving style.

Ceramic brakes
Applies to: vehicles with ceramic brakes

Ceramic brakes provide excellent deceleration rates.

The break-in period for new ceramic brakes may be significantly longer than for standard brake rotors. The properties of the material may also cause noise, especially when driving at lower speeds. Ceramic brakes also absorb more moisture in wet conditions. Therefore, there will temporarily be less braking force than when the brakes are dry. You can compensate for this by pressing the brake pedal harder.

Automatic post-collision braking system
The automatic post-collision braking system can help to reduce the risk of sliding and of additional collisions after an accident. If the airbag control module detects a collision, the vehicle is braked by the ESC.

The vehicle does not brake automatically if one of the following occurs:

  • You are pressing the accelerator pedal
  • The braking force generated by the pressed brake pedal is greater than the braking force that would be initiated by the system
  • The ESC, the brake system, or the vehicle electrical system is not functioning

Warning

  • Only apply the brakes for the purpose of cleaning the brake system when road and traffic conditions permit. You must not endanger other road users because this increases the risk of an accident.
  • Due to the risk of injury, only have an authorized
    Audi dealer or authorized Audi Service Facility work on the brake system.
    Incorrect repairs could impair the function.
  • Never let the vehicle roll while the engine is stopped because this increases the risk of an accident.
  • During automatic braking maneuvers, the brake pedal may move downward automatically.
    To reduce the risk of injury, do not place your foot under the brake pedal.

Note

  • Never let the brakes “rub” by pressing the pedal lightly when braking is not actually necessary. This can cause the brakes to overheat and increases braking distance and causes wear.
  • Observe the important information for driving downhill. This especially applies when towing a trailer.

Tips

  • If you retrofit your vehicle with a front spoiler, wheel covers or similar items, make sure that the air flow to the brakes is not obstructed.
    Otherwise the brake system can overheat.
  • Also refer to the information about brake fluid

Message

The following messages may appear depending on the vehicle equipment:

2024 Audi A4 Brake System Guide (3)brakes: malfunction! Safely stop vehicle
There is a malfunction in the brake system. If
2024 Audi A4 Brake System Guide (6)also  or
2024 Audi A4 Brake System Guide (7)turn on, there is a malfunction in the ABS, ESC, and braking distribution. If the brake booster is not working, you have to use much more force when braking the vehicle.

Do not continue driving. See an authorized Audi dealer or authorized Audi Service Facility for assistance.

Read and follow the other safety precautions

Brake booster: limited functionality. You can
continue driving. Please contact Service
There is a brake booster malfunction. The brake booster is available, but its effectiveness is reduced.

The braking performance may be different compared to the usual performance. Drive to an authorized Audi dealer or authorized Audi Service Facility immediately to have the malfunction corrected.

Brake booster: deactivated. See owner’s manual
The brake booster remains active for a brief period of time after switching off the ignition. Secure the vehicle against rolling

Other indicator lights
When you switch the ignition on, the
2024 Audi A4 Brake System Guide (3)indicator light turns on briefly to check the function.

If the indicator light does not turn on, there is a system malfunction.
1f2024 Audi A4 Brake System Guide (3)stays on, there is a malfunction in the brake system.

2024 Audi A4 Brake System Guide (8)A high toad was placed on the brakes from driving downhill for a long period of time. Follow the instructions in the message to utilize the engine braking effect and to relieve the brakes.

Warning
If a malfunction occurs in the ABS, ESC, and braking distribution, interventions that stabilize the vehicle will no longer be available.

This could cause the vehicle to swerve, which increases the risk that the vehicle will slide.

Do not continue driving. See an authorized Audi dealer or authorizedn Audi Service Facility for assistance.

Electromechanical parking brake

Operating the parking brake
The electromechanical parking brake is used to secure the vehicle from rolling away unintentionally.

The
2024 Audi A4 Brake System Guide (4)switch is located under the selector lever in the center console. It turns on when the parking brake is set. You can release the parking
brake manually or automatically when you start to drive.

Setting and releasing the parking brake

Setting: pull the
2024 Audi A4 Brake System Guide (4)switch.

  • If
    2024 Audi A4 Brake System Guide (5)appears, the parking brake is holding the vehicle. You can remove your foot from the brake pedal.
  • Releasing: when the ignition is switched on, press and hold the brake pedal and press the
    2024 Audi A4 Brake System Guide (4)button.

If the red indicator light flashes, the braking force has not built up enough or it has decreased.

You can also secure the vehicle by selecting the “p” gear or pressing the brake pedal. Make sure the indicator light is off before you start driving.

Automatically releasing the parking brake when starting to drive

Requirement: the driver’s door must be closed and the driver safety belt must be fastened.

  • Press the accelerator pedal to start to drive.

Warning

  • To reduce the risk of an accident, always make sure the vehicle is situated safely while stationary.
  • If the parking brake is set, it can release automatically when the accelerator pedal is pressed. To reduce the risk of an accident, do not inadvertently press the accelerator pedal and always shift into “P” when the vehicle is stopped.
  • If the power supply fails, you cannot set the parking brake once it is released, or release it if it is set. Secure the vehicle against rolling before exiting the vehicle. See an authorized Audi dealer or authorized Audi Service Facility for assistance.

Tips

  • On steep inclines, especially when in trailer mode, the vehicle may roll backwards unintentionally when starting to drive. To reduce the risk of this happening, pull and hold the
    2024 Audi A4 Brake System Guide (4)switch while pressing the accelerator pedal. If enough drive power has built up at the wheels and the vehicle does not roll backwards, then release the switch to start to drive.

If you leave the vehicle when “D” or “R” are engaged, the parking brake will be set automatically.

  • Noises, when the parking brake is set and released, are normal and are not a cause for concern.
  • The parking brake goes through a self-test cycle at regular intervals when the vehicle is stopped. Any noises associated with this are normal.

Emergency Braking function

Emergency braking should only be used in an emergency, if the standard brake pedal is malfunctioning or obstructed. When the emergency braking function is activated, the braking effect is similart o a heavy braking maneuver.

  • Pull and hold the
    2024 Audi A4 Brake System Guide (4)switch while driving.
  • An audio warning signal will sound and emergency braking will begin.
  • If you press the accelerator pedal, emergency braking will be canceled.

Warning

Heavy braking while driving through curves or in poor road or weather conditions can cause the vehicle to slide or the rear of the vehicle to swerve, which increases the risk of an accident.

Messages

The following messages may appear depending  on the vehicle equipment:

2024 Audi A4 Brake System Guide (3)Parking brake: malfunction! Safely stop vehicle. See owner’s manual GE / By

2024 Audi A4 Brake System Guide (3)Parking brake: malfunction! Please release parking brake

If one of the two messages appears, there is a malfunction in the parking brake. If the message appears while stationary, check if the parking brake is released and can be reset. If this is the case, switch the ignition off and back on.

If the message stays on, if the parking brake cannon be released, or if the message appears while driving, do not continue driving. Secure the vehicle against rolling before exiting the vehicle. See an authorized Audi dealer or authorized Audi Service Facility for assistance.

2024 Audi A4 Brake System Guide (2)Parking brake: malfunction! Please contact Service
There is a malfunction in the parking brake. Drive
to an authorized Audi dealer or authorized Audi Service Facility immediately to have the malfunction corrected. Do not park and secure it against rolling before exiting the vehicle

2024 Audi A4 Brake System Guide (1)Parking brake: warning! Vehicle position too steep
The braking force may not be enough to secure the vehicle from rolling away. Park the vehicle in a place with less of an incline.

2024 Audi A4 Brake System Guide (1)Parking brake: applied
The parking brake is set. Press and hold the brake pedalto release the parking brake.

2024 Audi A4 Brake System Guide 10Take over!
The vehicle cannot be held in place automatically.
Press the brake pedal to secure the vehicle from rolling away unintentionally.

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