By Sam Reyes, dashcam install technician — 8+ years, 200+ vehicles
It happens to almost every dashcam owner eventually. You get rear-ended, reach for your footage, and the card is empty for the past three weeks. Or worse — you spot the timestamp gap only after the insurance window closes.
The good news: most "dashcam not recording" problems trace back to one of three things — SD card, power, or settings — and you can usually isolate the culprit in under ten minutes. Below are the eight fixes I run through every week at the shop, ordered from most common to last resort. Work them top-down and you'll catch the issue before you ever need to ship the unit back.
Quick Diagnostic Flow (Start Here)
Before you change any settings, run this two-minute decision tree. It tells you which fix below to jump to:
Fix #1 — Reformat the SD Card Inside the Camera (Not on Your PC)
This single step resolves about 40% of "not recording" complaints I see. Here's why: dashcam SD cards are written to constantly. Over weeks, the file allocation table fragments, hidden temp files accumulate, and the camera's loop-record logic starts skipping segments — exactly the "first video, last few, bits and bobs in between" pattern Reddit threads are full of.
The trick most people miss: you have to format inside the camera menu, not on your computer. Windows formats to a slightly different cluster size than what dashcams expect (FAT32 / exFAT with the camera's native allocation). Format on PC and the cam will appear to record, then silently drop files.
How: On most JADO mirror cams, Settings → Storage → Format Card. Confirm twice. Card light flashes once when done. Cadence: every 4 weeks for daily drivers, every 2 weeks if you have parking mode hardwired.
Fix #2 — Check Your SD Card Isn't Counterfeit or Burned Out
"All Micro SD cards burn out eventually" — that's the quote from the most-upvoted answer in the r/Dashcam troubleshooting thread, and after eight years of installs, I agree. Dashcam cards rewrite their entire capacity multiple times per week. A consumer-grade card rated for 100 write cycles will hit end-of-life inside 12 months in a dashcam.
What to buy: Look for cards explicitly labeled High Endurance or Pro Endurance. Spec floor:
- For 1080p / 2K dashcams: U3, V30, Class 10 minimum
- For 4K / 5K dashcams (like the JADO G100 Pro): V30 minimum, V60 preferred
- Capacity sweet spot: 128 GB. Smaller fills too fast; larger wears unevenly
Counterfeit check: Run H2testw (Windows) or F3 (Mac/Linux) on a new card before trusting it. Roughly 1 in 6 cards sold on third-party marketplaces lies about its true capacity.
If you bought a JADO cam, the recommended 64 GB Class 10 U3 card that ships with the G100S bundle is pre-validated — that's the lowest-friction option.
Fix #3 — Power Connection: The Silent Killer
If the SD card checks out, power is the next-most-common failure. Three sub-causes, in order of frequency:
(a) The cable or USB-C port is fried. Constant heat cycles in a parked car (especially summer) crack the connector solder over time. Test with a known-good cable. If the dashcam doesn't even show a power LED, you've found it.
(b) The cigarette-lighter fuse blew. Pop the fuse panel, locate the accessory fuse, swap with one of the same amperage. Five-minute fix. Most cars list the fuse map inside the panel cover.
(c) Hardwire kit voltage cutoff is set too high. This one trips up everyone who wired their cam for parking mode. The kit watches battery voltage and cuts power to protect the car battery — but factory defaults are often 12.4V, which most modern batteries dip below within two hours of being parked. Drop the cutoff to 11.8V for daily drivers, 12.0V if your battery is over 3 years old.
One JADO advantage worth noting: the G810 Pro runs an ultra-low-power mode that draws roughly 1/8 the current of typical mirror dashcams in parking mode — translates to substantially longer safe-park time before the cutoff kicks in.
Fix #4 — Loop, Motion, Parking: The Three Settings That Lie
If power and SD are both clean, the cam is recording something — just not what you expect. Four settings to verify in this exact order:
Loop recording: ON. If loop is off, your card fills, the cam stops, and you lose every trip after that moment. Default segment length: 3 minutes for mirror cams, 1 minute for small dashcams.
Motion detection: OFF (while driving). Counter-intuitive. Motion detection is designed for parking mode — it only records when motion is "detected." Leave it on during normal driving and the cam ignores you when you're already moving, producing the "records the start and end of the trip, nothing in between" pattern.
Parking mode: OFF (while driving). Same trap. Parking mode interprets road vibration as impact events and produces a stream of 30-second locked clips that fill the card and crowd out loop recording.
G-sensor sensitivity: Low or Medium. Factory default is usually High. On rough roads or speed bumps, High sensitivity locks dozens of files daily, which (a) prevents loop overwrite and (b) eventually fills the protected partition. Drop it to Medium for city driving, Low for trucks and trailers.
Fix #5 — Firmware Update or Factory Reset
Outdated firmware is responsible for the kind of failures that look random: cam reboots mid-drive, files corrupt at 9 minutes 47 seconds every time, the time/date resets on every cold start. Manufacturers ship two to four firmware revisions a year for any active model; if you've never updated, you're probably running build 1.0.
Update flow (universal across most brands):
- Find your model's firmware page on the manufacturer's support site
- Download the latest
.binor.zipto your computer - Format your SD card inside the cam (see Fix #1)
- Copy the firmware file to the SD card root
- Insert card, power the cam — it auto-flashes (don't unplug)
- After the LED settles, reformat the card one more time
If firmware update doesn't help, factory-reset through the menu. That clears every setting back to defaults — including any user-introduced settings conflicts you can't remember making.
Fix #6 — Heat, Cracks, and Internal Hardware Failure
This is where troubleshooting starts paying diminishing returns. Symptoms:
- Random shutdowns above 85°F / 30°C cabin temp. Capacitor stress.
- Lens fog or color cast that won't clean off. Internal condensation from heat cycling — sensor is damaged.
- Audible click or buzz on power-up. Failed capacitor; replace the unit.
- Reboot every 5–10 minutes regardless of conditions. Almost always a power-circuit IC.
Dashboard temperatures in a parked car routinely exceed 160°F / 70°C in summer — most consumer dashcams are rated to 158°F / 70°C. This is why mirror-style cams with aluminum heatsinks (the G100 Pro uses an aero-aluminum housing with thermal coating) outlive plastic-bodied ones by years in hot climates.
Fix #7 — The Sneaky One: Did You Service Your Car Recently?
Real Reddit PSA, 786 upvotes: "Check your dashcam SD card after servicing your car." Mechanics routinely:
- Unplug the cam to use the cigarette lighter for diagnostics
- Disconnect the battery for repairs — which can corrupt the SD card filesystem if the cam was writing
- Bump the camera or SD slot during dash work and dislodge the card
- Knock the lens out of alignment so it records the ceiling
After every service appointment: power up the cam in the lot before driving away. Confirm the LED is solid, you hear the boot chime, and the date/time is correct. Pull a 10-second test clip to verify. Two minutes saves you weeks of empty recordings.
Fix #8 — When to Stop Troubleshooting and Replace
Honest math: if you've spent two hours debugging a $60 dashcam, you've already exceeded the cost of a better unit. Replacement triggers I use in the shop:
- Capacitor visibly swollen or leaking (open the housing) → replace immediately
- Three full reset + firmware cycles haven't fixed the issue → replace
- Water damage of any kind → replace; corrosion is progressive
- Cam is over 4 years old and the SD card has been replaced more than twice → end of life
If you're shopping, the failure modes above tell you what to look for: aluminum body, super-capacitor (not lithium-ion) for hot climates, ultra-low-power parking mode, and a manufacturer that ships firmware updates. JADO's mirror lineup — G810+ for daily drivers, G810 Pro for rideshare with three-channel coverage, G100 Pro if you want 5K and CarPlay — covers all three boxes.
Prevent the Next Failure: A 4-Week Maintenance Habit
Three habits that prevent 90% of the failures above from ever happening:
- Enable audio recording-confirmation chime in the cam settings. You'll hear it boot every trip — silent boot = problem to investigate.
- Reformat the SD card every 4 weeks. Set a calendar reminder. Takes 30 seconds.
- If anything happens, pull footage within 24 hours. Loop recording will overwrite it eventually — most dashcam footage gets overwritten inside 5–7 days at 4K.
Frequently Asked Questions
How often should I format my dashcam SD card?
Every 4 weeks for daily driving, every 2 weeks if you have parking mode hardwired (more write cycles). Always format inside the cam, not on a computer.
Can a dashcam SD card die without warning?
Yes — and usually does. Most SD cards don't throw a visible error before failing; they just silently stop accepting writes. That's why audio recording-confirmation and monthly card swaps matter.
Why does my dashcam record some trips but not others?
Almost always one of three things: motion detection or parking mode is on during driving (recording only when triggered), loop recording is off and the card is full, or the SD card has worn out and is dropping writes randomly. Run the diagnostic flow at the top of this guide.
Does heat damage dashcams permanently?
Sustained temperatures over 160°F / 70°C will degrade the internal capacitor and image sensor over time. Park in shade where possible. For climate where this isn't possible, choose a dashcam with aluminum housing and thermal coating — the JADO G100 Pro and G810 Pro both have aero-aluminum chassis rated to higher operating temperatures than plastic-bodied units.
How long do dashcam SD cards last?
Consumer cards: 6–12 months in a dashcam. High Endurance / Pro Endurance cards: 18–36 months. Industrial-grade cards: 3–5 years. Cost-per-month, High Endurance is the best value for most drivers.
Bottom line: 9 times out of 10, a dashcam that's not recording has an SD card that needs reformatting or a power connection that's intermittent. Run the diagnostic flow at the top, work down the fixes, and you'll be back to reliable recording before lunch.
Need a replacement that won't fail silently? Browse the JADO mirror dashcam lineup — every model ships with audio recording-confirmation, ultra-low-power parking mode, and the kind of aluminum housing that survives summer parking lots.