2024 Audi Q4 e-tron Brake System User Guide

2024 Audi Q4 e-tron Brake System Owner’s Manual

The 2024 Audi Q4 e-tron’s brake system combines advanced regenerative stopping with traditional hydraulic brakes. This makes the vehicle safer, more efficient at recovering energy, and smoother when slowing down, all of which improve the driving experience.

2024 Audi Q4 E-Tron Review, Specs, Price And Mileage (Brochure)

Audi Brakes Guide

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

Operating noise
Noises may occur when braking depending on the speed, braking force, and outside conditions such as temperature and humidity.
When the vehicle is stationary, the brake system performs system tests at regular intervals. This can cause brief noise and haptic feedback effects on the brake pedal.

Braking effect
The response time from the brakes depends on the weather and 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 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 a long period 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 @ A\. Select the “N” position when doing this, so that recuperation is not used for braking.

Brake pads
New brake pads do not achieve their full braking effect during the first 500 miles (800 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.

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, or
• 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 to clean 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 to work on the brake system. Incorrect repairs could impair the function.
• Never let the vehicle roll while the drive system is switched off because this increases the risk of an accident.
• During automatic braking manoeuvres, 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 necessary. This can cause the brakes to overheat increase braking distance and cause wear.
• Observe the important information for driving downhill > page 98. This especially applies when towing a trailer.

Tips

• Ifyou 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 > page 234

Messages
The following messages may appear depending on the vehicle equipment

Brakes: malfunction! Safely stop vehicle

There is a malfunction in the brake system. If

also turns 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 pads: wear limit reached. You can continue driving. Please contact Service

The brake pads are worn. Drive to an authorized Audi dealer or authorized Audi Service Facility as soon as possible to have the malfunction corrected.

Brake booster: limited functionality. You can continue driving
The brake booster has limited availability or is not available.

• If the message appears while the vehicle is stationary with the ignition switched off, there is no malfunction. The brake booster will be fully functional when the ignition is switched on. Before exiting your vehicle, secure it from rolling > page 91.
• If the message appears while the vehicle is stationary with the ignition switched on, there is a malfunction. Secure the vehicle against rolling page 91. Remove your foot from the brake pedal. Switch the ignition off and back on. If the message still appears or it appears while driving, drive immediately to an authorized Audi dealer or authorized Audi Service Facility to have the malfunction corrected. The brake booster is available, but its effectiveness is reduced. The braking performance may be different compared to the usual performance.

Brake booster: deactivated. See the owner’s manual
The brake booster remains active for a brief period after switching off the ignition. Secure the vehicle against rolling > page 97

Other indicator lights
When you switch the ignition on, the indicator light turns on briefly to check the function. If the indicator light does not turn on, there is a system malfunction.

If  Stays on, there is a malfunction in the brake system.

A high toad was placed on the brakes from driving downhill for a long period. Follow the instructions in the message to utilize recuperation 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 authorized Audi Service Facility for assistance.

Electromechanical parking brake

Operation
The ® button is located in the center console above the selector lever fig. 79.

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

• Press the (@® button. The parking brake will be set. Or:
• The parking brake activates automatically when
  the ignition is switched off.

If appears the parking brake is holding the vehicle. You can remove your foot from the brake pedal. If the red indicator light flashes, the braking force has not built up enough or it has decreased. When parking the vehicle, also secure it.

Enabling rolling ability (neutral)
In situations where the parking brake should not activate automatically, for example in a car wash, follow these steps: Requirement: the vehicle is stationary, the ignition is on, the brake pedal is pressed, and the N selector lever position is selected.

• Confirm the notification in the MMI. Or:
• Applies to MMI: Select on the home screen: VE
  HICLE > Settings & Service > Idle > Bring to an
  idle.
• If you exit the vehicle, it will still be able to roll.
• To secure the vehicle against rolling again, press the (@) button or switch off the drive system by pressing the button.
• Applies to: MMI: To turn the notification when selecting the “N” selector lever position off or ‘on, select on the home screen: VEHICLE > Idle > Show pop-up in the N position

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, never press the accelerator pedal without paying attention.
• If the power supply fails, you cannot set the parking brake once itis released, or release it is set. Secure the vehicle against rolling before exiting the vehicle > page 97. See an authorized Audi dealer or authorized Audi Service Facility for assistance.

Note
The parking brake must not activate automatically when in a car wash with conveyor belts. Make sure the vehicle is able to roll. To reduce the risk of damage, do not switch the ignition off.

Tips

• 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 similar to a heavy braking manoeuvre.

• Press and hold the© ) button while driving.
• An audio warning signal will sound and emergency braking will begin.
• If you press the (® button, 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:

Parking brake: malfunction! Safely stop the vehicle. See owner’s manual

parking brake: malfunction! Please release the 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 cannot be released, or if the message appears while driving, do not continue driving. Secure the vehicle against rolling before exiting the vehicle <page 91. See an authorized Audi dealer or authorized Audi Service Facility for assistance.

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 the vehicle on inclines and secure it against rolling before exiting the vehicle.

parking brake: Warning! The vehicle position is 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.

Parking brake: Applied
The parking brake is set. Keep the brake pedal pressed down and select a selector lever position to deactivate the parking brake.

Take over!
The vehicle cannot be held in place automatically. Press the brake pedalto secure the vehicle from rolling away unintentionally.

Special driving situations

Driving uphill and downhill
When driving uphill, downhill, or at high altitudes, note the following information:

• Drive slowly and carefully.
• Do not try to turn around if you cannot safely drive on an incline or hill. Instead, drive in reverse. Utilize the recuperation braking effect when driving downhill by selecting the “B” driving program © page 92. This reduces the load on the brakes.
• Apply the brakes in intervals and do not press the brake pedal continuously.

WARNING

• Only drive on inclines that your vehicle is designed to handle. Do not exceed the hill climbing ability of your vehicle. Your vehicle could tip or slide.
• Do not drive at an angle on steep inclines and hills. If your vehicle is aboutto tip, you must immediately start steering in the direction of the downward slope to reduce the risk of an accident.

Driving through water
If you must drive through water, follow these instructions:

• Check the stability of the ground, the current, and the water depth. If the ground is unstable, there is a strong current, or there are waves, the water must only reach up to the lower edge of the body at the most.
• Drive carefully and no faster than at walking speeds to prevent the front of the vehicle from creating waves, because they could splash above the lower edge of the body. Oncoming vehicles could also create waves.
• Do not stop the vehicle while in the water.
• Do not drive in reverse.
• Do not switch off the drive system.

WARNING
After driving through water, press the brake pedal carefully to dry the brakes so that the full braking effect will be restored.

2024 Audi Q4 E-Tron Review, Specs, Price And Mileage (Brochure)

Note
Vehicle components such as the motor, drive system, suspension, or electrical system can be severely damaged by driving through water.

Tips
If possible, avoid driving through salt water because it increases the risk of corrosion. Use fresh water to clean any vehicle components that come into contact with salt water.

FAQs

Useful Links

View Full PDF: 2024 Audi Q4 E-Tron Owner’s Manual |Auto User Guide

2024 Audi Q4 E-Tron Keys And Smart Key Guide

2024 Audi Q4 E-Tron Cruise Control (CC) Guide