Top 5 Problems With the 2023 Audi S5

Owners of the 2023 Audi S5 occasionally report various issues with the MMI infotainment system, ranging from the screen freezing to unresponsive touch controls. These glitches can significantly disrupt the user experience, especially when relying on navigation, media, or smartphone integration features like Apple CarPlay and Android Auto.

Symptoms drivers notice

• Infotainment screen freezes or becomes unresponsive
• Apple CarPlay or Android Auto frequently disconnects
• System randomly reboots while driving
• Navigation system lags or fails to load maps
• Bluetooth connectivity issues with paired devices

Typical repair cost and time

DIY parts: $0 (software reset). Typical shop labor: 1-3 hours for diagnosis and software update ($150-$450). Module replacement can be $800-$1500+ for parts and labor if hardware is faulty.

How to diagnose and fix

1. Perform a soft reset of the MMI system by holding down the volume knob and the two buttons above it until the screen restarts.
2. Ensure your smartphone's operating system and the MMI's software are up to date; check for updates via the MMI settings or consult your dealer.
3. Try deleting and re-pairing Bluetooth devices or re-connecting Apple CarPlay/Android Auto if connectivity is the issue.
4. Check for any loose USB connections if using wired CarPlay/Android Auto.
5. If issues persist, schedule a diagnostic appointment with an Audi dealership for a professional software update or to check for faulty MMI hardware.

The advanced driver assistance systems (ADAS) in the 2023 Audi S5, such as Audi Pre Sense, adaptive cruise control, and lane assist, are designed to enhance safety and convenience. However, some owners have reported intermittent malfunctions, often indicated by warning messages on the instrument cluster, which can temporarily disable these features.

Symptoms drivers notice

• "Audi Pre Sense Malfunction" warning message appears
• Adaptive cruise control becomes unavailable or disengages unexpectedly
• Lane assist system gives false warnings or fails to operate
• Parking sensors provide inaccurate readings or false alarms
• Blind spot monitoring system intermittently fails to detect vehicles

Typical repair cost and time

DIY parts: $0 (cleaning sensors). Typical shop labor: 1-3 hours for diagnosis and sensor cleaning/calibration ($150-$450). Sensor replacement can range from $300-$1000+ per sensor, plus calibration labor.

How to diagnose and fix

1. Inspect and clean the exterior sensors, radar units (behind the Audi rings, lower grille), and camera lenses (windshield) for dirt, snow, or obstructions.
2. Check for any error codes using an OBD-II scanner; generic scanners may show codes, but an Audi-specific tool is best for ADAS.
3. Perform a system reset by turning the car off, locking it, waiting a few minutes, and restarting.
4. Ensure the windshield is clean and free of cracks or chips that could obstruct camera views.
5. If warnings persist, professional diagnosis at an Audi dealership is required to identify faulty sensors, wiring issues, or calibration needs.

The Tire Pressure Monitoring System (TPMS) in the 2023 Audi S5 is crucial for safety, alerting drivers to low tire pressure. However, owners sometimes encounter false warnings, inaccurate readings, or a persistent TPMS malfunction light, even when tire pressures are correct.

Symptoms drivers notice

• TPMS warning light illuminates despite correct tire pressures
• Incorrect tire pressure readings displayed on the MMI screen
• "TPMS Malfunction" message appears on the instrument cluster
• Inability to reset the TPMS system after adjusting tire pressures
• Warning light reappears shortly after being reset

Typical repair cost and time

DIY parts: $50-$150 per TPMS sensor. Typical shop labor: 0.5-1.5 hours for diagnosis and sensor replacement/relearn ($75-$225) per wheel.

How to diagnose and fix

1. Manually check all tire pressures with a reliable gauge and adjust them to the manufacturer's recommended specifications (found on the driver's side door jamb).
2. Reset the TPMS system via the MMI menu (Car > Settings & Service > Tire pressure monitoring > Store tire pressure).
3. Inspect tire valve stems for any visible damage or signs of corrosion, which can indicate a failing sensor.
4. If the warning persists, a faulty TPMS sensor in one or more wheels is likely; these require professional replacement and a system relearn.
5. Have an Audi technician diagnose the system, as they can identify which specific sensor is failing and perform the necessary programming.

While providing an open-air feel, the panoramic sunroof in the 2023 Audi S5 can occasionally develop annoying rattles, creaks, or excessive wind noise. These issues often become noticeable when driving over uneven roads or at higher speeds, detracting from the vehicle's otherwise quiet and refined cabin.

Symptoms drivers notice

• Rattling or creaking noises coming from the sunroof area over bumps
• Excessive wind noise or whistling heard from the sunroof at speed
• Sunroof operation feels rough or sticky
• Visible gaps or misalignments in the sunroof seals
• Water leaks around the sunroof area (less common but possible)

Typical repair cost and time

DIY parts: $10-$50 (lubricants, cleaning supplies). Typical shop labor: 1-3 hours for diagnosis, adjustment, and lubrication ($150-$450). Seal replacement can add $100-$300+ for parts.

How to diagnose and fix

1. Thoroughly clean the sunroof tracks and rubber seals with a mild cleaner and soft cloth to remove any debris.
2. Apply a silicone-based lubricant specifically designed for rubber seals to the sunroof seals and tracks.
3. Operate the sunroof fully open and closed several times to distribute the lubricant and check for smooth movement.
4. Inspect the sunroof mechanism for any loose screws or components that might be causing rattles.
5. If the noise persists, an Audi technician can inspect for misaligned panels, worn seals, or issues with the sunroof motor or frame, requiring adjustment or replacement.

The 2023 Audi S5 incorporates a 12V mild hybrid system to enhance fuel efficiency and provide smoother start/stop operation. However, some owners have reported issues related to this system, often manifesting as "12V battery low" warnings, intermittent electrical glitches, or problems with the start-stop function.

Symptoms drivers notice

• "12V battery low" warning message appears on the instrument cluster
• Start-stop system malfunctions or becomes inoperative
• Intermittent electrical issues (e.g., flickering lights, random accessory behavior)
• Slow cranking or difficulty starting the engine
• Unexpected warning lights related to charging or electrical system

Typical repair cost and time

DIY parts: $200-$400 (for a new 12V battery). Typical shop labor: 1-3 hours for diagnosis and battery replacement ($150-$450). MHEV component replacement (e.g., belt-alternator-starter) can be $800-$2500+ for parts and labor.

How to diagnose and fix

1. Check the main 12V battery's charge level and condition; a weak battery can trigger various MHEV-related warnings.
2. Ensure battery terminals are clean and securely fastened.
3. If the battery is old or consistently low, consider replacing it with a new, correctly specified AGM battery.
4. Observe if the start-stop system functions normally; its malfunction is often an early indicator of MHEV system issues.
5. For persistent warnings or starting problems, an Audi dealership should diagnose the MHEV system, as it involves complex components like the belt-alternator-starter and DC/DC converter, requiring specialized tools.

Which problem to fix first

For most 2023 Audi S5 owners, addressing any MMI infotainment system glitches or driver assistance system malfunctions should be the priority, as these can impact the driving experience and safety features. While not immediately critical, persistent warnings or non-functional features detract significantly from the luxury experience. Issues like TPMS errors or sunroof rattles, while annoying, are generally less urgent. If the 12V mild hybrid system shows warnings, it should be addressed promptly to prevent potential starting issues or broader electrical problems.

When to see a professional

DIY repairs on a 2023 Audi S5 should generally be limited to basic troubleshooting like cleaning sensors, performing system resets, or checking fluid levels. Any persistent warning lights, especially those related to the engine, transmission, or safety systems (like ADAS), require professional diagnostic tools and expertise. Complex electrical issues, MHEV system faults, or mechanical repairs involving disassembly of interior panels or powertrain components should always be handled by a certified Audi technician or a reputable independent specialist. Attempting advanced repairs without proper knowledge and tools can lead to further damage or void warranties.

Frequently asked questions

What are the most common electrical issues in a 2023 Audi S5?

The most common electrical issues in a 2023 Audi S5 often involve the MMI infotainment system freezing or disconnecting, and occasional malfunctions with advanced driver assistance systems like Pre Sense. Owners may also encounter false warnings from the Tire Pressure Monitoring System.

Is the 2023 Audi S5 known for any engine problems?

The 2023 Audi S5, equipped with the 3.0L TFSI V6 (EA839) engine, is generally reliable. However, some owners have reported issues related to the 12V mild hybrid system, which can manifest as "low 12V battery" warnings or intermittent electrical glitches, rather than core engine mechanical failures.

How reliable is the MMI system in the 2023 Audi S5?

While generally feature-rich, the MMI system in the 2023 Audi S5 can sometimes experience software-related glitches such as freezing screens, unresponsiveness, or intermittent disconnections with Apple CarPlay and Android Auto. These are typically resolved with software updates or system resets.

Sources and further reading

Owner forums, NHTSA complaints, and OEM TSB summaries informed this guide.

This guide is not a substitute for OEM service procedures; use a qualified technician for safety-critical work.