How to use Android Auto with an active VPN via split tunneling

The Android Auto VPN Conflict

Users often encounter a "Communication error 21" when attempting to use Android Auto while a Virtual Private Network (VPN) is active on their device. This error prevents Android Auto from connecting and functioning as expected, which can be inconvenient for drivers who rely on VPNs for privacy.

The conflict arises because Android Auto is not a traditional application that makes its own network requests. Instead, it operates as an extension of the phone, routing data through predefined APIs. Its wireless connection relies on a direct local Wi-Fi link between the phone and the car, and system-level networking features like VPNs can disrupt this direct connection.

Resolving the Issue with Split Tunneling

The solution to this connectivity problem is to utilize a VPN feature called split tunneling. Split tunneling allows users to select which applications route their traffic through the encrypted VPN tunnel and which applications connect directly to the internet without VPN encryption. This functionality enables Android Auto to establish the direct connection it requires while other applications continue to benefit from VPN protection.

Beyond Android Auto, split tunneling is also useful for other applications that may require a direct internet connection, such as certain smart home platforms, streaming services, and gaming applications. This ensures that essential services function correctly without compromising the overall privacy provided by the VPN.

Enabling Split Tunneling for Android Auto

To enable split tunneling for Android Auto, users need to access their VPN application's settings. The general process involves navigating to the split tunneling option, enabling it, and then adding Android Auto to an exclusion list. This list specifies applications that should bypass the VPN tunnel. After making these changes, reconnecting the VPN will apply the new configuration. Some VPN providers, such as NordVPN, offer automated options to exclude applications known to be incompatible with VPN connections.