This document is a Quick Questions & Answers guide for the 2021 Audi A4, S4, and A4 allroad models, focusing on various in-car technologies and features.
MMI Touch Display
The MMI Touch Display serves as the central interface for accessing multiple vehicle features and functions. It's a touchscreen system that allows users to interact with Radio, Media, Phone, available Navigation, Phone Apps, Vehicle settings, and more. When connected to Apple CarPlay or Android Auto, the display seamlessly switches to the mobile device's operating system, providing access to associated functions and applications. Users can customize the layout by pressing and holding icons to drag them to desired locations. Swiping left or right navigates between menu pages, while pressing the Home button returns to the Home screen. The display also features a Quick Access bar for frequently used menus and a Status Display that shows information like connected mobile devices, data connection, and Bluetooth® activation. A Notification Center, accessible by pulling down the status bar or pressing its icon, displays status information and notifications, and allows management of connected devices, personal profiles, and date/time settings. Notifications can be deleted by pressing and dragging them to the right edge.
Automatic Climate Control
The 3-Zone Automatic Climate Control system allows separate temperature settings for the driver's side, front passenger side, and rear passenger compartment. The system activates when any button is pressed or a temperature dial is turned.
- AUTO: Displays the set temperature and activates AUTO mode for each zone. Pressing again deactivates AUTO. Changing air distribution or fan speed also turns off AUTO.
- 3-ZONE/SYNC: Toggles through 3-ZONE, SYNC, and Set Rear settings. SYNC applies driver's side settings to all other areas except seat heating/ventilation. If front or rear passenger settings are changed, SYNC is disabled. Set Rear allows front panel control of rear seat settings.
- Air Distribution: Adjusts airflow distribution by pressing up or down.
- Blower: Adjusts fan speed by pressing up or down.
- A/C: Toggles between ON, OFF, and A/C MAX. Indicates when the air conditioning system is active. A/C only works when the fan is on. When off, air is neither cooled nor dehumidified, which can cause windows to fog. AUTO mode also turns on A/C. A/C MAX cools and dehumidifies the interior as quickly as possible, setting temperature to LO and increasing fan speed.
- Seat Heating: Adjusts heat level with repeated presses.
- Seat Ventilation (optional): Adjusts airflow with repeated presses.
- MAX Defrost: Clears windshield fog or frost quickly by directing most air to the windshield vents and automatically regulating temperature. Requires sufficient engine heat.
- Recirculation: Recirculates cabin air, preventing outside air entry.
- Rear Window Defogger: Activates the electric heater in the rear glass, turning off automatically after 10-20 minutes.
- OFF: Deactivates the climate control system. Rear heating and cooling can be turned off by selecting Set Rear with the 3-ZONE/SYNC button, then OFF.
- Residual Heat: When the ignition is off, pressing the driver's temperature knob warms the interior using residual engine heat for about 15 minutes.
Steering Wheel Controls
The steering wheel features controls on both the left and right sides for various functions.
- Left Side Controls:
- OK: Selects tabs in the instrument cluster.
- Thumbwheel: Scrolls through menus and presses to choose a selection.
- Back button: Returns to higher-level functions.
- VIEW button: Changes virtual cockpit display and opens/closes menus.
- Right Side Controls:
- Phone button: Makes or receives phone calls.
- Thumbwheel: Controls volume and presses to mute.
- Track/Station buttons: Selects next or previous track, radio station, or FF/REW.
- Customizable function (*): Can be customized via MMI display (Vehicle » Settings & Service » Steering wheel button assignment).
- Voice Recognition button: A short press activates MMI voice recognition, while a long press activates voice recognition with a paired phone.
Cruise Control
The cruise control system allows the driver to set and maintain a desired speed.
- Activation: Pull the control stalk toward you to the ON position.
- Set Cruising Speed: Press the SET button at the end of the stalk at the desired speed. The set speed and CRUISE indicator light appear in the driver information system.
- Changing Speed:
- Accelerate or decelerate, then press SET again.
- Push the stalk up or down one detent for 1 mph increments.
- Push the stalk up or down to the second detent for 5 mph increments.
- Cancel/Resume:
- To cancel, press the brake pedal or push the stalk slightly away to the CANCEL position. The CRUISE indicator light turns off.
- To resume, pull the stalk toward you to return to the last set speed. The last set speed remains in memory until cruise control is turned off or the Audi is turned off.
Audi Adaptive Cruise Control
Available on equipped vehicles, this system combines speed and distance regulation to maintain a set distance from a vehicle ahead, braking and accelerating as necessary.
- Turns on/off with the main cruise control. Turning it off also turns off traffic jam assist.
- Displays in the instrument cluster via Driver assistance view on the multifunction steering wheel.
- Setting the Distance: Tap the rocker switch to display current distance setting (five settings available). The last setting is stored when ignition is off. Increase or decrease distance with or buttons. A warning displays if the distance falls below the set threshold. The warning threshold can be set, changed, or deleted in the MMI touch display (Home menu » Vehicle » Driver assist settings » Distance warning).
Driver Assistance Settings
Accessed via the Home menu » Vehicle » Driver assistance. Depending on equipment, features may include:
- Speed warning
- Adaptive cruise control
- Audi pre sense
- Side assist
- Distance warning
Park Assist
Park assist automatically steers the car into parallel or perpendicular parking spaces using ultrasonic sensors. The driver controls gear shift, acceleration, braking, and monitors surroundings. Activated by pressing the P button on the center console, which illuminates an LED and displays the P icon in the Infotainment system. To search for driver's side spaces, activate the left turn signal. To switch off, press the Park Assist button again.
Navigation
The optional MMI Navigation system offers user-definable views, routing selections, and more.
- Intelligent Search: Allows entering search terms for destinations (points of interest, contacts, previous destinations, routes, favorites) in any order. Requires an Audi connect subscription for internet-based searches.
- From Home menu, select Navigation on the touchscreen.
- Touch the Search icon for shortcuts (Parking, Restaurant, Gas station).
- Use the touchscreen keyboard or handwriting recognition to enter address or name.
- Choose from displayed matching locations.
- Select Start for route guidance.
- Online Search Engine Provider:
- Select Navigation » » G.
- Enter search terms until the desired destination appears.
- Press the desired destination, then Start.
- Intelligent Search with Voice Recognition:
- Short press the Voice Recognition button on the steering wheel or on the Intelligent search screen of the MMI touch display.
- Speak an address, Point of interest, or generic category.
- Choose destination from the list.
- Saving Favorites: Press and hold a displayed radio station, telephone contact, or destination until the option menu appears. Choose Store as favorite. A solid white star indicates it's stored.
- Access via Home screen » Radio » Source » Favorites.
- Access via Home screen » Telephone » Favorites.
- Access via Home screen » Navigation » » Favorites.
- Navigation Settings: With the display in map view, press to access and modify settings including Map settings, Voice guidance, Route criteria, Route information, and Presentation mode.
Bluetooth® Technology
Allows pairing compatible phones for hands-free communication and media streaming.
- Initial Setup:
- Turn ignition on with vehicle in Park.
- Activate phone's Bluetooth.
- Open phone's Bluetooth menu and ensure "Audi MMI XXXX" appears.
- Select Phone on the touch display.
- Select Connect mobile device.
- Select device from the list. Press Refresh if not displayed.
- Select Pair on device when PINs match.
- Select Allow on device to sync contacts. Open Bluetooth submenu on device and enable Show Notifications, Sync Contacts, and Apple CarPlay for iOS.
- Switch Between Paired Phones: A primary and secondary phone can be paired. To swap, select Phone » on the vehicle touch display.
Voice Recognition
- Enable Online Speech Dialog System:
- On MMI, select Settings » General » Speech dialog system.
- Consent to online recognizer by sliding button right.
- Activation:
- Short press of Voice Recognition button on steering wheel activates MMI voice recognition for audio, navigation, and telephone functions (e.g., "Play FM 103.5").
- Long press of Voice Recognition button with a compatible device connected enables voice recognition with phone's digital assistant (e.g., "Call Mary Smith, mobile").
- Switch Off: Press and hold Voice Recognition button on steering wheel, or say "Cancel," or press Cancel on touch display.
The Multi Media Interface accesses multiple media sources: Bluetooth-connected devices, USB-connected devices, Radio/Satellite sources, online media (via Wi-Fi hotspot), and SD cards. Bluetooth streaming is not available when Apple CarPlay is active.
- Access a Media Source:
- Select Media on the touch display.
- Select Source and choose from available options.
- Connect Additional Mobile Devices (after two phones paired):
- Select Media.
- Select Source.
- Select Connect external device.
- Activate Bluetooth menu on external device.
- Select New connection and select from available Bluetooth devices. Press Refresh if not displaying.
- A PIN will be generated; confirm on mobile device.
Audi Smartphone Interface
Connects compatible smartphones to the MMI for adapted content display and operation.
- Apple CarPlay®:
- To Connect:
- Ignition on with vehicle in Park.
- iPhone unlocked, running latest iOS.
- Connect iPhone with manufacturer-approved cable to USB port.
- Respond to prompts on MMI and iPhone.
- When Connected: Long press Voice Recognition button on steering wheel activates Siri. Make/receive calls, send/receive text messages, set reminders, get turn-by-turn navigation, see recent places, listen to music apps.
- Wireless Apple CarPlay® (with Navigation):
- To Connect:
- Switch on iPhone's Bluetooth and Wi-Fi. Ensure Bluetooth menu is open on upper display.
- Select Phone apps on display.
- Select To connected devices.
- Select New connection.
- Select iPhone from list.
- Follow prompts on MMI and iPhone.
- Features: Siri Voice Control (enabled on device). Activated by long press of Voice Recognition button on steering wheel or long press of Home button on touch display. Functions include Home, Phone, Maps, Messages, and additional music apps. Press Audi MMI icon to return to MMI system.
- Android Auto™:
- To Connect:
- Android phone running current OS.
- Bluetooth and Wi-Fi on.
- Active data plan.
- Connect phone to USB port via USB cable.
- Respond to prompts on MMI and phone. Download/update Android Auto app if prompted.
- When Connected: Long press Voice Recognition button on steering wheel activates Google Assistant or say "Hey Google." Make/receive calls, send/receive text messages, set reminders, get turn-by-turn navigation, see recent destinations, listen to music apps.
- Features: Microphone (long press activates Google Assistant), Navigation (predictive directions), Phone (messages, calls, voicemail), Home Screen, Music and Audio (streaming apps), Vehicle Functions (return to MMI system).
Wi-Fi Settings
With an Audi connect PRIME or PLUS subscription, passengers can use the MMI Wi-Fi hotspot. PRIME includes Basic Wi-Fi (audio streaming, email), PLUS includes Full-Speed Wi-Fi (video streaming) for up to eight devices. Ignition must be on.
- Setup:
- From Home menu, select Settings.
- Select Connection settings.
- Select Wi-Fi.
- Press toggle icon to activate/deactivate. A random password is set at factory, should be changed.
- Select Wi-Fi hotspot settings.
myAudi Mobile App Connectivity
The myAudi app personalizes the Audi A4 experience with smart services. After setting up a myAudi account and completing key user setup, log in via MMI.
- To Log In:
- From Home Screen, select User.
- Select myAudi login.
- Enter Username and Password, press Login.
- myAudi account connected.
- From myAudi mobile app, select Vehicle icon, scroll to "myAudi marketplace," click Shop, view eligible plans, and select desired plan.
Indicator Lights
The guide provides a comprehensive list of indicator lights with their corresponding functions:
- Central indicator light: General warning.
- BRAKE Brake system: Brake system warning.
- PARK Electromechanical parking brake: Parking brake status.
- Cooling system: Engine cooling system warning.
- Engine oil pressure: Low engine oil pressure.
- Engine oil level: Low engine oil level.
- Electrical system: Electrical system fault.
- Safety belt: Seat belt reminder.
- Electromechanical steering: Steering system fault.
- Steering lock: Steering lock engaged/fault.
- Engine start system: Engine start system status/fault.
- Transmission: Transmission fault.
- Hood: Hood open.
- Adaptive cruise assist: Adaptive cruise assist status.
- Traffic jam assist: Traffic jam assist status.
- Distance warning: Distance warning active.
- Lane departure warning: Lane departure warning active.
- Driver intervention request: Driver intervention requested.
- SOS Emergency assist: Emergency assist status.
- Air suspension: Air suspension status.
- Loose wheel warning: Loose wheel warning.
- Drive system: Drive system fault.
- Audi pre sense: Audi pre sense active.
- MIN Engine oil level (MIN): Minimum engine oil level.
- MAX Engine oil level (MAX): Maximum engine oil level.
- SENSOR Engine oil sensor: Engine oil sensor fault.
- Engine warm-up request: Engine warm-up request.
- Electrical system: Electrical system status.
- Tank system: Fuel tank system status.
- Washer fluid level: Low washer fluid.
- Windshield wipers: Windshield wipers active.
- Keys: Key not detected/fault.
- Door lock: Door open/unlocked.
- Battery in vehicle key: Low key battery.
- Bulb failure indicator: Bulb failure.
- Lane departure warning: Lane departure warning active.
- Adaptive light: Adaptive light active.
- Light/rain sensor: Light/rain sensor active.
- Rear cross-traffic assist: Rear cross-traffic assist active.
- Intersection assist: Intersection assist active.
- Side assist: Side assist active.
- Electronic Stabilization Control (ESC): ESC active.
- Electronic Stabilization Control OFF (ESC): ESC off.
- ESC OFF Electronic Stabilization Control (ESC): ESC off.
- TPMS Tire pressure: Tire pressure monitoring system warning.
- A/C Climate control system: A/C active.
- Transmission: Transmission status.
- Steering lock: Steering lock status.
- Engine start system: Engine start system status.
- Steering: Steering system status.
- Suspension control: Suspension control status.
- All wheel drive/Sport differential: All-wheel drive/Sport differential status.
- Air suspension: Air suspension status.
- PA Parking system plus: Parking system plus active.
- SOS Emergency assist: Emergency assist status.
- Brake system: Brake system status.
- ABS Anti-lock Braking System (ABS): ABS active/fault.
- Safety systems: Safety systems active.
- BRAKE WEAR Brake pads: Brake pad wear warning.
- P Electromechanical parking brake: Parking brake status.
- Tire pressure: Tire pressure status.
- Turn signals: Turn signals active.
- CRUISE Cruise control system: Cruise control active.
- P Electromechanical parking brake: Parking brake status.
- Low beam headlight: Low beam active.
- Parking light: Parking light active.
- 50 Efficiency assist: Efficiency assist active.
- A Start/Stop system: Start/Stop system active.
- High beam: High beam active.
- AUTO High beam assist: High beam assist active.
- or Intersection assist: Intersection assist active.
- Transmission: Transmission status.
- Steering: Steering status.
- Adaptive cruise assist, Efficiency assist: Adaptive cruise assist/efficiency assist active.
- Distance warning: Distance warning active.
- Audi pre sense: Audi pre sense active.
- Air suspension: Air suspension status.
- Child safety lock: Child safety lock active.
- MPH Speed warning system: Speed warning active.
- P Electromechanical parking brake: Parking brake status.
- Adaptive cruise assist: Adaptive cruise assist active.
- Camera-based traffic sign recognition: Traffic sign recognition active.
- Convenience Key: Convenience key status.
- Start/Stop system: Start/Stop system active.
- Hill hold assist: Hill hold assist active.
- Rear cross-traffic assist: Rear cross-traffic assist active.
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