Dash Cam Not Recording? How to Diagnose and Fix It

The worst dash cam fault is the one that hides in plain sight: the camera is powered on, the light is glowing, and it is recording nothing at all.

You only find out when you need the footage and there is none. The cause is almost always the SD card, and it is usually a quick fix. Here is how to confirm what is happening and put it right.

First, is it actually recording?

Before you fix anything, confirm the camera really is not recording, because “powered on” and “recording” are not the same thing.

• On a camera with a screen, look for a recording indicator, often a red dot or a running timer. A flashing REC symbol usually means it is capturing.
• On a screenless camera, check the status light against the manual, since a steady light and a flashing light mean different things on different models.
• The definitive test: after a short drive, take the card out (with the camera powered off first) and check on a computer whether new video files have appeared.

If new files are being created, the camera is recording and your issue is really about keeping or finding footage, which our guide to a dash cam not saving footage covers. If nothing is being written, read on.

The number one cause: the SD card

The overwhelming majority of “not recording” problems come down to the card:

• No card, or a card not seated properly. No card means nothing to record to. Reseat it firmly.
• The card is corrupted. A corrupted card stops the camera writing. This is common and fixable.
• The card is the wrong type. A standard card that is not high endurance can fail within months in a dash cam and stop recording. So can a card larger than the camera supports.
• The card is full and loop recording is off. If the card fills and the camera is not set to overwrite the oldest footage, recording simply stops.

Fix the card

Work through these in order:

1. Power the camera off, then reseat the card. Never remove a card while the camera is on.
2. Format the card in the camera. Use the camera’s own format option. This clears most corruption and is the single most effective fix.
3. If that fails, format on a computer to FAT32, then again in the camera. This resets a badly corrupted file system.
4. Replace the card with a proper high endurance card sized to what your camera supports. Our guide to dash cam SD card errors covers the specifics.

Check loop recording is turned on

Loop recording is what lets the camera keep going by overwriting the oldest footage once the card is full. If it is switched off, the camera records until the card is full and then stops. Check it is enabled in your settings. Bear in mind that formatting the card can reset settings to default, so confirm loop recording and your other key settings after any format.

Check the camera is not frozen or in the wrong mode

Sometimes the card is fine and the camera itself has stalled:

• It is frozen. Like any small computer, a dash cam can lock up. Do a hard reset using the reset button or by removing power for a couple of minutes.
• It is in the wrong mode. If the camera is sitting in playback, settings, or a photo mode, it is not recording video. Exit back to the main recording screen.
• The firmware is out of date. A firmware bug can stop recording. Update it.

Step-by-step summary

1. Confirm whether it is recording by checking for new files.
2. Power off and reseat the card.
3. Format the card in the camera, then via a computer if needed.
4. Confirm loop recording is on.
5. Hard reset the camera and exit any menu or playback mode.
6. Update firmware, and replace the card if nothing else works.

Why a camera that is not recording is a fleet nightmare

For one car, a camera not recording is a fault you find and fix. Across a fleet it is the most dangerous fault there is, because the camera looks like it is working. Drivers see the light on and assume they are covered, while the camera captures nothing, and with footage stored on a card in the vehicle nobody knows until an incident lands and there is no evidence.

This is precisely what remote monitoring exists to catch. A connected system confirms each camera is actually recording and flags one that has stopped, instead of relying on a driver to notice a light. For taxi and PHV operators, where a missing clip can decide a dispute, that assurance matters, as we cover in our guide to dash cams for UK PCO operators.

Summary and next steps

A dash cam that is on but not recording is nearly always the SD card. Confirm it is not recording, reseat and format the card, check loop recording is enabled, and reset the camera if it has frozen. Replace a worn or wrong card with a proper high endurance one.

For a fleet, the only real safeguard is knowing every camera is recording right now, not assuming it from a light on the dash. Book a demo to see it in action →