Freezing of the infotainment, ECU (Electronic Control Unit) faults and excessive electronics issues often make the Volvo S90 less reliable than you would expect from a premium saloon. Owners regularly report frozen screens, slow responses and connectivity problems that significantly disrupt the user experience. These faults are usually software-related but tend to come back persistently. What can you do yourself and when is a visit to the dealer necessary?
The Volvo S90 is known for its luxurious look and modern technology, but it is precisely this advanced electronics that proves vulnerable. The infotainment system forms the digital heart of the car and controls navigation, phone, audio and climate control. When this system falters, it leads to frustration and discomfort while driving. Common problems with the Volvo S90 include a touchscreen that no longer responds, Bluetooth connections that drop out, or apps such as CarPlay and Google Maps that suddenly crash.
Most commonly reported infotainment faults
Certain faults occur strikingly often on the S90. The touchscreen stops responding or stutters, making operation difficult or impossible. Users and dealers describe this as one of the most common infotainment problems. Connectivity issues mean that phones do not pair properly, connections drop out, or CarPlay and Android Auto work unreliably.
Navigation and app errors also occur regularly. Maps do not load properly, Google services respond slowly or do not open correctly. Audio and volume issues are also frequently reported: sound cuts out temporarily or the volume control responds unreliably. In addition, there are software glitches such as small bugs, sudden freezes or a system that locks up without any clear cause.
- Touchscreen does not respond or is slow
- Bluetooth connection keeps dropping out
- CarPlay or Android Auto works unreliably
- Navigation and Google apps do not load
- Audio cuts out or volume does not work correctly
- System crashes without warning
How to reset a frozen Volvo S90 infotainment system
If the infotainment system freezes, a soft reboot often helps to temporarily resolve the issue. With Google-based Volvo systems, it is advised to press and hold the physical Home button below the screen for about 20 seconds. The screen goes black and the Volvo logo reappears when the system restarts. Some instructions mention a longer duration of 15 to 30 seconds. This differs per model and software version.
For older Sensus systems, Volvo recommends locking the car. Then leave the car in sleep mode for about 30 minutes. After that, the display often works normally again. This method gives the system the chance to clear temporary data (caches) and processes. If the fault keeps coming back, a factory reset via the menu may be necessary. Note: this will erase settings, profiles and paired devices.
Step-by-step guide for a soft reboot
- Press and hold the Home button under the touchscreen for 20 seconds
- Wait until the screen goes black and the Volvo logo appears
- Let the system start up fully before touching anything
- Check whether the fault has been resolved
- Try the sleep-mode method if the reboot does not work
Common ECU errors on the Volvo S90
Faults in the infotainment system can be related to ECU problems. The Electronic Control Unit controls various systems and communicates with modules such as the infotainment. If this communication is disrupted, it leads to freezes or error messages on the screen. Owners sometimes report that several functions fail at once, such as navigation, audio and phone. This often points to a system or power supply problem rather than a single app error.
A recurring problem is the TCAM module (the car’s telematics and internet module), which is responsible for internet connectivity and telematics. Repeated loss of the network connection often points to a defective TCAM, especially if a reboot does not solve the problem. In those cases, a workshop diagnosis is necessary to read fault codes and possibly replace the module.
Causes of Volvo S90 infotainment crashes
Crashes of the infotainment system are often caused by software (software fault). Outdated software causes errors, freezes and compatibility issues with phones. Software updates usually fix this, provided they are installed in time. Some owners report that crashes occur more often after longer driving times or when using several apps at the same time. This points to the system being overloaded.
Paired devices can also cause crashes. For Sensus systems, Volvo indicates that emojis and special characters in contact names can cause problems with voice recognition or phone integration. Removing special characters from contacts can help. In addition, a defective cable or phone can be the cause. Test with another phone or cable to rule out that the problem lies there and not in the car.
Practical tips to prevent crashes
- Regularly check for available software updates
- Remove special characters and emojis from contact names
- Test with another phone or cable if problems keep coming back
- Pair your phone again if CarPlay or Bluetooth is glitchy
- Avoid using multiple apps at the same time on long journeys
‘ When several functions fail at the same time, this points more to a system or power supply issue than to a single software fault. ’
When is a visit to the dealer necessary
If the infotainment screen regularly stays black or keeps freezing, a software update or workshop diagnosis is recommended. A dealer can use the diagnostic system to check whether fault codes have been stored in the ECU and whether modules are communicating correctly. If the internet connection repeatedly drops out and a reboot does not solve anything, there may be an issue with the communication module or with the aerial and telematics components.
When several functions fail at once, this points more to a system or power supply issue than to a single software fault. In that case, professional diagnosis is needed to identify the cause. Sometimes a hardware component turns out to be defective, such as the TCAM module or a connection fault between the infotainment and other systems. A dealer can check these parts and replace them if necessary.
Real-world experiences
On online Volvo communities and forums, owners often report that a soft reboot gets the screen, Bluetooth or navigation working normally again, especially after a freeze or problems with Google Maps and CarPlay. A recurring pattern is that the fault sometimes disappears temporarily after a restart, but returns later if there is a deeper software or communication fault. Make sure you update the software consistently. Have persistent issues diagnosed in good time.
Some owners report that the car becomes stable again by itself after a longer drive or a sleep cycle. The car has then had time to recover. The system regularly clears temporary data (caches) and processes. However, it remains unreliable if you depend on navigation or phone while driving. A temporary fix does not solve the problem structurally.
Step-by-step plan for infotainment faults
Always start with a restart, not immediately with a factory reset. A soft reboot resolves many temporary software problems without data loss. Then check whether software updates are available and install them. Pair your phone again if connectivity problems persist.
Only if these steps do not help should you consider a factory reset via the settings menu. Remember that this will erase all settings, profiles and paired devices. Therefore, make a list of paired devices in advance and note down important settings. If the fault returns after a reset, a dealer visit for diagnosis is necessary.
- Carry out a soft reboot using the Home button
- Check for available software updates
- Pair your phone again if you have connectivity problems
- Test with another phone or cable
- Consider a factory reset if the previous steps do not help
- Schedule a dealer visit if faults keep returning
‘ Even so, the S90 remains sensitive when it comes to connectivity and app integration, especially when updates or paired devices are not fully in sync. ’
Infotainment faults are often software-related
Most infotainment faults on the Volvo S90 have a software-related cause and do not immediately point to a major defect. This means that owners can often take steps themselves to resolve the issue. A soft reboot, software update or re-pairing of devices fixes many faults. Even so, the S90 remains sensitive when it comes to connectivity and app integration, especially when updates or paired devices are not fully in sync.
Official Volvo instructions differ per infotainment system. Older Sensus systems work differently from later Google-based systems. Consult the manual or the dealer for specific instructions that apply to your model and year of manufacture. This prevents frustration and unnecessary actions.
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Frequently asked questions
The most common infotainment faults on a Volvo S90 are a frozen or non-responsive touchscreen, slow operation and stuttering connectivity (Bluetooth/phone, CarPlay/Android Auto). You can recognise them by a screen that freezes or goes black, menus that respond slowly or not at all, and phone connections that keep dropping out or fail to establish. Navigation and app errors (maps or Google apps that will not load) and sound that cuts out temporarily or non-functioning volume control are also common. A soft reboot (pressing and holding the home button for about 20 seconds) or fully locking the car and starting it again after half an hour often solves these issues temporarily; if they return, diagnosis or a software update at the dealer is needed.
You can resolve many simple faults with a soft reboot: press and hold the physical Home button below the screen for around 20–30 seconds until the screen switches off and the Volvo logo appears again. If that does not help, switch the car off completely and leave it in sleep mode for at least 30 minutes so the system can restart itself. For Bluetooth or CarPlay issues, it often helps to unpair your phone, pair it again and, if possible, test with another cable or phone. Only if faults keep returning is it sensible to carry out a factory reset via the menu or visit the dealer.
Possible causes of infotainment faults in the Volvo S90 include software bugs, frozen processes, outdated system software, problems with paired phones/cables and, in some cases, a defective communication module. You can partly prevent them by keeping the system up to date, keeping your phone and cables (for CarPlay/Android Auto) in good condition and free from unnecessary apps/emoji contact names, and by occasionally giving the system a clean restart (soft reboot via the home button). Regularly allow the car to go fully into sleep mode (switch the car off and do not open it again immediately) so that the system can clear caches. Persistent or frequent faults are best investigated at the dealer for a software update or hardware diagnosis of components such as the TCAM module.
First check whether the problem disappears with a soft reboot by pressing and holding the Home button below the screen for about 20–30 seconds until the system restarts. Then unpair and remove your phone and any CarPlay/Android Auto profiles and pair them again, preferably testing with another cable or phone. Look in the menu to see whether infotainment or system software updates are available and install them. If this does not help or the fault keeps returning, you can, as a final step, carry out a factory reset of the infotainment system before going to the dealer.
For complex infotainment faults in a Volvo S90, costs vary widely: simple software problems (diagnosis, update, reset) usually remain between about €100 and €300, while persistent or hardware-related faults involving the replacement of modules or the screen can quickly reach €500–€1,500. Many faults are software-related and can be resolved with a soft reboot, updates or a factory reset, which keeps costs relatively low. For structural connectivity or black-screen problems, replacement of, for example, the infotainment or communication module may be necessary, which significantly increases costs. Repair options therefore range from a simple restart and reconfiguration to complete module or screen replacement at the dealer.