Dash Cam Fell Off Your Window? Here's the Fix

Dash Cam Fell Off Your Window? Here's the Fix

So your dash cam fell off the window. One minute it's watching the road like a good little mate, the next it's swinging from the cable doing its best disco ball impression. Annoying, yes. A disaster, no. This is one of the most common things we help people with, and nine times out of ten you can sort it yourself at the kitchen table in about ten minutes.

Let's walk through exactly why a dash cam falls off, and the right way to stick it back on so it stays put. We'll focus on the rear camera on the back glass, because that's the one that usually lets go first, but the same steps work for the front camera on your windscreen too.

Why did my dash cam fall off in the first place?

Almost always, it comes down to two things: heat and a dodgy first stick. Aussie summers turn a parked car into an oven, and the inside of your rear glass can climb past 60 degrees. That heat slowly softens the glue on the mount until gravity wins.

The other culprit is prep, or lack of it. If the glass had the tiniest bit of dust, film or fingerprint grease when the mount first went on, the adhesive never really bonded. It was living on borrowed time from day one.

Good news: both problems are easy to beat with the right adhesive and a proper clean. Let's get into it.

What you'll need to reattach a dash cam that fell off

Grab these before you start, so you're not running around mid-job:

  • A new adhesive pad or mounting tape made for dash cams (usually 3M VHB, a heavy-duty double-sided tape). Do not plan to reuse the old glue.
  • Isopropyl alcohol, often just called ISO or rubbing alcohol. You can grab it from the chemist or auto shop.
  • A plastic scraper or an old bank card.
  • A clean microfibre cloth or two.
  • A microfibre or lens cloth for the camera lens.

Pro Tip: Don't try to reuse the original sticky pad. Once it has peeled off and picked up dust, it's about as useful as a chocolate teapot. Fresh adhesive is a couple of dollars and it's the single biggest thing that stops your dash cam falling off again.

Check out our own HOW-TO video!

Step by step: sticking your rear camera back on

Take your time with this. The whole job lives or dies on the prep, so don't rush the boring bits.

1. Remove the old glue

Peel the old adhesive pad off the mount. Then gently scrape any leftover glue or gummy residue off both the mount and the rear glass with your plastic scraper or old card. Keep it flat against the surface so you don't scratch anything. Plastic only, never a metal blade near the glass.

2. Wipe everything down with ISO

Put a little isopropyl alcohol on your microfibre cloth and give the glass a proper wipe where the mount will sit. Do the same to the back of the mount. The ISO strips away grease, dust and old glue film, which is exactly what stopped the bond last time. Let it dry for a minute. It flashes off quickly.

3. Fit the new adhesive

Peel one side of the fresh adhesive pad and press it onto the mount first. Then peel the other side, line the mount up where you want it on the rear glass, and press it on. Measure twice, stick once, because that VHB tape does not like being repositioned once it grabs.

4. Hold firm pressure

Press the mount hard against the glass and hold firm for a good 30 seconds. Real pressure, not a polite tap. This is what wakes the adhesive up and starts the bond. Then leave it alone. Most tapes reach full strength after 24 hours, so try not to clip the camera back on or tug the cable for the rest of the day if you can help it.

5. Clean the lens

Last job, give the camera lens a gentle wipe with a dry microfibre or lens cloth before you click it back into the mount. Fingerprints from the rescue mission will blur your footage, and blurry footage is useless when you actually need proof of what happened on Australian roads.

How do I avoid the heater lines in the rear glass?

Look closely at your rear window and you'll see thin horizontal lines running across it. Those are the demister heating elements, the things that clear fog and frost. They're delicate, and scraping hard across them can break the circuit and leave you with a dead patch on your demister.

So when you're cleaning off old glue or positioning the mount, work gently and try to sit the mount in a clear space between the lines rather than right on top of them. Light pressure with a plastic scraper is fine. Digging in with a blade is how you end up with a foggy stripe that never clears. Pick a spot that still gives the camera a clean view of the road out the back.

How do I stop my dash cam falling off again?

Three habits keep it stuck for the long haul:

Prep, prep, prep. We keep banging on about this because it matters more than anything else. Clean glass and a clean mount with ISO before you stick equals a bond that lasts for years.

Hold firm while it cures. That 30 seconds of solid pressure is not optional. It's the difference between a mount that grips and one that lets go on the first hot day.

Park smart in summer. A windscreen sunshade or a shady spot keeps the cabin cooler and takes the heat stress off the adhesive. Your whole car will thank you, not just the dash cam.

If you're fitting a genuine mount, stick with the proper part for your model. Our genuine VIOFO range and spare mounts are specified for Australian conditions, unlike some of the cheap unbranded pads that give up in a fortnight.

Rather leave it to a pro?

Totally fair. If the cable has come loose too, or you'd just rather have someone else handle it, you can find an independent professional installer through our dash cam installer finder. They're independent businesses, so you book directly with them.

And if you're not sure which adhesive or mount suits your camera, just get in touch with Michael or Harrison. Tell us your model and we'll point you to the right part. No worries, we've got you.

Last reviewed: 19 August 2026. If a specification, a feature or a price on this page is wrong or has gone out of date, tell us and we will correct it.