Nexus 4 Pro S Not Recording: Troubleshooting Checklist

TL;DR: If your Nexus 4 Pro S dashcam is not recording, start by checking the SD card, power connection, and recording settings. Many recording issues stem from card compatibility, corrupt files, or power interruptions.

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Quick overview

• Ensure the microSD card is compatible, properly formatted, and has sufficient free space.
• Verify the dashcam’s power source is stable—check the cigarette lighter or hardwired connection.
• Confirm that recording is enabled in the settings and the dashcam is not stuck in standby mode.
• Look for firmware updates from Nexus that might resolve known bugs affecting recording.
• Test the dashcam with a fresh SD card to rule out storage-related issues.

What to look for in Canada

Canadian drivers face particular challenges with dashcams like the Nexus 4 Pro S, especially given our climate extremes and legal considerations.

• Cold starts: In below-freezing conditions, ensure your dashcam initializes quickly. Some older or budget microSD cards slow down in cold, causing startup delays or failed recordings.
• Heat tolerance: Ontario summers and car interiors can get hot. Store your dashcam away from direct sunlight when parked to avoid thermal shutdowns or recording interruptions.
• Parking mode: If you use parking surveillance, verify you have a proper hardwire kit installed. The Nexus 4 Pro S supports motion detection while parked, but it requires consistent power that regular cigarette lighter sockets don’t supply once the engine is off.
• Installation notes: For best results, position the Nexus 4 Pro S on your windshield near the rearview mirror to avoid obstructing your view and ensure a stable GPS signal, important for accurate event tagging.

My recommendation

The Nexus 4 Pro S is a solid choice for Canadian drivers looking for a feature-rich dashcam capable of 4K recording and convenient parking modes. However, to maximize reliability and prevent recording failures, invest in a high-quality microSD card rated for dashcam use (typically Class 10 or higher, U3 recommended) and consider a professional hardwired installation for parking mode functionality.

If you often drive in regions with extreme cold or heat, look for dashcams with wide operating temperature ranges or enhanced thermal protection. While the Nexus 4 Pro S performs well, pairing it with reliable storage and power setups is essential to avoid the common no-record issues.

For straightforward plug-and-play setups—such as daily commuting in cities like Toronto or Vancouver—the Nexus 4 Pro S works well with a robust SD card and regular power from your vehicle’s accessory socket. For trucks or long-haul drivers who need parking surveillance, hardwiring with a low-voltage cutoff will safeguard your battery and recording uptime.