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If you own a 2024 Citroen C5 Aircross dash cam project in mind, you have probably looked at the usual suspects: a suction-cup camera stuck to the windshield, a tangle of cable running down the A-pillar, and a power plug dangling from the cigarette lighter. They work, technically. But they look like an afterthought, they rattle, they block a slice of your forward view, and they scream "I added this later" every time someone gets in the car.
The Citroen C5 Aircross dash cam we are installing here is different. The Mercylion G164 is a Vehicle Specific, OEM Style Hidden Dash Camera built to replace the factory rearview-mirror cover with a 1:1 matched housing that carries a 4K lens. There is no visible cable, no suction mark, and no butchered trim. It is the difference between a camera you tolerate and a camera that looks like it rolled off the line at the Citroen plant.
Quick Answer: You can complete a Citroen C5 Aircross dash camera install in 30–45 minutes with zero wire cutting. The Mercylion G164 is a Plug & Play, Direct Fit OEM Style unit that draws power from the Integrated rain-sensor harness behind the rearview mirror.
A Citroen C5 Aircross dash cam install is genuinely a one-cup-of-coffee job, but a little prep removes every surprise. Gather the kit, your phone, and about 45 minutes of undisturbed time — the mirror cowl clips are far easier to seat when you are not rushing the job.
What you need before the first clip comes off:
Most Citroen dash cam buyers start with a universal model and regret it. Picture the typical setup: a wedge of black plastic suctioned above the mirror, a cable snaking along the headliner to the 12V socket, and a glowing record light that pulls your eye every time you glance up. It works — until the first hot day, when the mount lets go and dangles by its own wire. A Vehicle Specific OEM Style camera removes every one of those failure points before they can happen. Here is the honest comparison.
| Pain Point | OEM Style / Hidden Dash Camera Solution |
|---|---|
| Suction mount leaves a ring on the glass and falls off in summer heat | Custom fit mirror-cover housing, no adhesive |
| Exposed power cable down the A-pillar | No Wiring — power is taken inside the trim |
| Blocks part of the windshield | Lens sits above the mirror, outside your sightline |
| Generic look that clashes with the cabin | OEM Look — 1:1 restored factory cover shape |
| Fuse-box hardwire scares off DIY owners | Plug & Play rain-sensor tap, no tools beyond a pry tool |
The G164 is not just a camera clipped onto your mirror. It is an Integrated module that replaces the factory mirror cover, uses the same power source as the rain sensor, and leaves zero visible wiring. For a daily driver you plan to keep long-term, that matters.
Key advantages of going OEM style on a C5 Aircross:
The Mercylion G164 is listed for the Citroen C5 Aircross across its production span, including the 2024 1.6 Hybrid (e-THP) model. For the 2024 model year the G164 is matched to the facelifted mirror cowl used on late-production C5 Aircross units, so the housing clicks into the same clips as the factory cover. The same G164 family also covers several Peugeot and DS bodies — but for this guide we stay on the C5 Aircross.
| Model Year | Mercylion Part | Notes |
|---|---|---|
| 2019 – 2021 | G164 | First-gen C5 Aircross mirror cowl |
| 2022 – 2023 | G164 | Facelifted cowl; confirm clip pattern |
| 2024 (incl. 1.6 Hybrid) | G164 | Matched to late-production facelifted cowl |
Always confirm your mirror-housing style before ordering. Mercylion asks for a photo of the rearview mirror casing on some models; for the C5 Aircross the G164 is the confirmed match across the years listed above.
| Source | Included? | Parking Mode | Difficulty |
|---|---|---|---|
| Rain-sensor harness (Plug & Play) | Yes — primary cable | Collision-triggered only | Easiest |
| Reading-light / overhead tap | Via Y-harness variant | Collision-triggered only | Easy |
| OBD backup cable | Yes — included | Full parking (with hardwire) | Moderate |
For most 2024 Citroen C5 Aircross dash cam installs, the rain-sensor Plug & Play cable is all you need. The OBD cable is your backup for 24/7 parking surveillance.
Depending on the version you order, the G164 ships in one of three packages. All include the OEM Style housing and both power cables. Choose the front-only 2K or 4K kit for a clean single-camera setup, or the front-plus-rear bundle if you want coverage of what happens behind you at the lights.
Total time: 30–45 minutes. Tools: the included pry tool, a smartphone, and 10 minutes of patience. No drill, no multimeter, no fuse taps.
Park on level ground, engage the electric handbrake, and switch the car to "off" but keep the key nearby. Lay the pry tool, SD card, and card reader on the passenger seat. Open the Mercylion app download page on your phone so it is ready for the final test.
Pro Tip: Do the first install in daylight or under a bright workshop light. The mirror cowl clips are plastic — cold weather makes them brittle, so a warm garage is ideal.
Slide the pry tool into the seam at the top of the rearview-mirror cowl and gently walk it along the edge. The cover is held by press-fit clips, not screws. Work slowly from one side to the other until the whole cover releases. Set it aside — you will not need it again.
Pro Tip: Never yank. If a clip resists, rotate the pry tool rather than prying harder; the C5 Aircross cowl is thin and cracks if forced.
STEP 2 — Pry off the rearview mirror cover
Behind the cover you will see the rain-sensor connector plugged into the mirror base. Press the release tab and pull it straight out. This is your power source. The Mercylion Y-harness has two ends: one receives the original connector, the other feeds the camera. No wire is cut.
Pro Tip: Snap a photo of the connector orientation before unplugging. It only goes in one way, but the picture saves you a second guessing game in Step 4.
STEP 3 — Disconnect the rain-sensor harness，the red circle marks the location of the vehicle’s original power‑supply connector. Unplug the connector here, then wait to connect the power cable later.
Plug the original car connector into the matching side of the Mercylion Y-cable. Plug the camera's lead into the other side. Route the short camera pigtail up into the new housing channel. Everything is Direct Fit — if it feels forced, a tab is misaligned, so back out and re-seat.
Pro Tip: Tuck the excess Y-cable loop flat against the windshield header. A neat loop prevents rattle and keeps the new cover sitting flush.
STEP 4 .1— Connect the plug-and-play Y-harness to factory cable
STEP 4.2—Connect the plug-and-play Y-harness to factory connector
STEP 4.2—Connect the plug-and-play Y-harness to Citroen C5 Aircross Dash Camera
Place the Custom fit camera housing where the old cover was. Press from the bottom up until every clip engages — you should hear a soft series of clicks. The lens now peers through the factory slot, invisible from outside.
Pro Tip: Confirm the camera lens is centered in its window and the housing edge gap matches the surrounding trim. A 1 mm misalignment is the difference between "factory" and "almost."
STEP 5 — Snap in the OEM dash cam housing
If you chose Package 3, mount the 2K rear cam on the inner rear glass with the electrostatic film and 3M pad. Route the extension cable along the headliner and down the C-pillar, connecting it to the front unit. The rear cam draws power from the front — no separate tap needed.
Pro Tip: Route the rear cable behind the weather seal, not over it, to keep the factory squeak-free and water-tight.
Insert the Micro SD card into the camera. Start the car: a blue light means power is correct. On your phone, connect to the camera's Wi-Fi (for examle named "Mercylion-XXXX", please according the manual you got), open the Mercylion app, and run a live-view and playback test. Format the card in-app, set loop recording to 3 minutes, and enable G-Sensor.
Pro Tip: Keep the app's firmware check on. A 2-minute update on day one prevents a "card error" at the worst possible moment three months later.
The G164 is not just about a clean install. It is also a capable recorder. Here is what each version delivers.
The 4K front version captures 3840 × 2160 through a 2G4P+IR waterproof lens with an F1.5 aperture and the Novatek NT96565 processor. License plates stay readable at highway distance, and H.264 / MP4 files play on any device. For a C5 Aircross that spends time on the motorway, that resolution is the difference between a readable plate and a blurry blob when you need evidence most.
A 145° diagonal field of view covers all lanes without the "fish-eye" distortion that hurts readability. The IR-assisted lens and large aperture hold detail at dusk and under streetlights — exactly when the C5 Aircross's night lighting leaves gaps. On a narrow lane or a busy roundabout, that extra coverage means the car that cut you off is still in frame when it matters.
Dual-band 802.11 a/b/g/n/ac Wi-Fi lets you pull clips to your phone without removing the card. The app handles live view, playback, sharing, and settings. No mobile data is used for local transfers. After a close call, you can save the 30-second clip and message it to your insurer before you have even pulled over.
With the OBD backup cable, collision-triggered parking recording kicks in about 15–20 seconds after an impact, so a shopping-cart nudge or hit-and-run is captured even while parked.
An external GPS module (sold separately) stamps speed and location onto the footage — useful for insurance and disputed claims. If a dispute ever reaches court, a location- and speed-stamped clip settles arguments about who was where, fast.
Seamless 1 / 3 / 5-minute loop recording on a Class-10 card (up to 256 GB) means you never manually format, and the triaxial G-Sensor locks the clip the moment it senses a collision. Pair it with a 256 GB card and you get days of driving history on rotation without touching the camera again.
If something looks off after the first drive, it is almost always one of three things:
No. On the Plug & Play rain-sensor tap the camera sleeps with the car. Only the optional OBD hardwire enables always-on parking mode, it is suggest to set 4/8 hours, if you are affraid drain the battery, it is not support to set all day long.
The Y-harness still taps the mirror's power feed; rain sensing is not required. If your trim has no mirror harness at all, use the included OBD backup cable instead.
It is a Vehicle Specific housing, so the cowl will not match a different model. It is suggest to keep your car original cover.
Yes — a built-in microphone captures cabin audio, and it can be muted in the app for privacy.
Pick 4K if you want maximum plate readability and future-proofing; pick 2K if budget matters and you mostly drive city miles. Both are OEM Style and Plug & Play.
A Citroen C5 Aircross dash cam should look like it belongs there, and the Mercylion G164 does. It is a genuine OEM Style, Hidden Dash Camera that you can fit in under an hour with nothing but a pry tool and your phone. No cutting, no rattles, no windshield rings — just clean 4K evidence when you need it. Whether you drive the petrol C5 Aircross or the 2024 1.6 Hybrid, the install is identical, and the original cover stays in the glovebox so the car goes back to stock the day you sell it.
Ready to install? Get the Mercylion G164 for your Citroen C5 Aircross:
Full installation walkthrough:
Last updated: August 19, 2026
