Lexus RX Dash Cam Adapter

Lexus RX Dash Cam Adapter

Plug & play dash cam power for 20 years of Lexus RX — from 2006 to 2026
7 SKUs
Widest coverage of any model
20 yrs
Model years covered
<5 min
Install time
3 yr
Warranty

The Lexus RX is the best-selling Lexus model for over 20 years — and Dongar has it covered from 2006 to 2026 with 7 different adapter SKUs, the widest compatibility of any vehicle in the Dongar lineup. Whether you drive a brand-new RX 500h or a classic 2008 RX 350, there's a plug & play adapter that fits your vehicle. No cutting, no splicing, no messy wires — just the clean, OEM-quality install that Lexus owners expect.

Why not just hardwire? Lexus owners choose their vehicles for quality, refinement, and attention to detail. A traditional hardwire kit means tapping into fuse boxes, running exposed cables, and risking warranty concerns. Dongar's plug & play adapters connect to existing OEM connectors behind the mirror — no tools, no modifications, and everything hides behind the mirror shroud for a factory-clean look.

Which Adapter Fits Your Lexus RX?

Current Gen RX (2023–2026) 5th Gen

The 5th gen RX has two connection points — the auto-dimming mirror and the TSS 3.0 computer. All trims support both. This generation also supports the Dongar PRO and PRO+ for parking mode.

Model Mirror (DCA-10B) TSS 3.0 (DCA-16T) PRO / PRO+
RX 350 ✓ ✓ ✓ (10B)
RX 350h ✓ ✓ ✓ (10B)
RX 500h ✓ ✓ ✓ (10B)

Previous Gen RX (2016–2022) 4th Gen

Configuration Adapter Connection
RX 350 / RX 450h (with auto-dimming mirror) DCA-10B Mirror 10-pin connector
RX 350 / RX 450h (with TSS 2.5) DCA-12T TSS lane-trace computer

Older Gen RX (2006–2015) 2nd & 3rd Gen

Configuration Adapter Connection
RX with auto high beam DCA-14A Mirror connector
RX with economy mirror DCA-7B Mirror connector
RX with 5-pin domelight DCA-5B Domelight cavity
Not sure which adapter you need? With 7 SKUs across 20 years of RX models, it's understandable. Use the Compatibility Finder — enter your year and trim, and it'll tell you exactly which adapter fits your RX.

Connection Points Explained

Rearview Mirror

DCA-10B (2016+) • DCA-14A / DCA-7B (2006-2015)

Plugs into the auto-dimming mirror connector underneath the plastic mirror shroud. USB output mounts on the windshield near the mirror — clean and accessible. The most common connection point across all RX generations.

TSS Computer

DCA-16T (TSS 3.0, 2023+) • DCA-12T (TSS 2.5, 2016-2022)

Shares power from the Lexus Safety System+ lane-trace assist computer near the mirror base. Does NOT connect to the mirror itself. A great alternative connection point on newer RX models.

Domelight Cavity

DCA-5B (select 2006-2015 models)

Plugs into the 5-pin connector inside the overhead console. Lives entirely hidden in the ceiling — perfect for owners who want a completely invisible installation.

Don't confuse the connectors! Behind the mirror shroud on 2016+ models, you'll see both the mirror connector (10-pin) and the TSS computer connector (12-pin or 16-pin). They look similar but require different adapters. The DCA-10B pamphlet warns: "Most Toyotas/Lexus have a Safety Sense Connector that can easily be confused with your rearview mirror connection: DO NOT UNPLUG THIS." Use the Compatibility Finder to confirm which adapter you need.

How to Install

Mirror Install (DCA-10B / DCA-14A / DCA-7B)

  1. Tilt your rearview mirror down and carefully remove the plastic shroud/cover
  2. Locate the mirror connector — on 2023+ models this is a 10-pin connector (NOT the nearby TSS connector)
  3. Unplug the mirror harness
  4. Plug the Dongar adapter inline between the harness and mirror
  5. Route the USB-C cable behind the headliner to your dash cam
  6. Replace the shroud — done

TSS Install (DCA-16T / DCA-12T)

  1. Remove the plastic shroud around the mirror base
  2. Locate the TSS computer connector (16-pin on 2023+, 12-pin on 2016-2022) — it's near the mirror base but separate from the mirror connector
  3. Unplug the TSS harness
  4. Plug the Dongar adapter inline
  5. Route the USB-C cable to your dash cam and replace the shroud — done
Pro tip: Lexus mirror shrouds can be tight — use a plastic trim tool if needed to avoid scratching. The hardest part of the whole install is getting the covers on and off, as many RX owners confirm.

Parking Mode

Want your dash cam recording while your Lexus RX is parked? You have options:

A word about parking mode: It sounds great on paper — your dash cam watches your car 24/7. In reality, memory cards fill up quickly with motion-triggered clips (especially in busy parking lots), and most front-only or front+rear cameras won't capture a side-impact hit-and-run anyway. Repeated charge/discharge cycles can also wear on your vehicle battery over time. That said, if you do want parking mode, the Dongar approach gives you more flexibility than generic hardwire kits — easy install, easy removal, and built-in voltage cutoff to protect your battery. That's why we invented these products: to give you more options, not fewer.

Dongar PRO PMA-01

3-position switch:
• IGN — on with engine only
• Timed — 4 hours after parking
• Continuous — up to 36 hrs, 11.8V cutoff

Includes 5A + 5C + 10B harnesses in one box. Use Harness 10B for the Lexus RX mirror connector.

Dongar PRO+ PRS-01

OLED display + one-button menu:
• Custom voltage cutoff (0.01V precision)
• Custom timer (hrs + mins, default 8hr)
• Energy Budget mode (Eco/Normal/Heavy)
• 5V always-on + Parking Mode CC for Viofo/RedTiger

Same harnesses as PRO. Swap module & mount if upgrading.

RX 350h / RX 450h / RX 500h hybrid owners: Your hybrid doesn't use the 12V battery to start the engine — the high-voltage hybrid system (up to 288V) handles that. This means extended parking mode is even less of a concern for your battery. The PRO's low-voltage cutoff provides an extra safety net regardless. Hybrid RX models are ideal candidates for dash cam parking mode.
Using a Viofo or RedTiger dash cam? These cameras have non-standard USB-C implementations. The Dongar PRO+ has dedicated "5V Output Always-On" and "Parking Mode CC" settings that bypass the USB-C handshake, letting these cameras properly enter and exit parking mode. The PRO will keep them recording continuously, but they won't enter their low-power standby state.

What Lexus RX Owners Are Saying

I was really hesitant about this, but I went ahead and took the plunge. I have a 2025 RX 350h that this is installed in. The install was very easy. The hardest part was getting the plastic covers on/off the rearview mirror. There's not a ton of room but it works.

— Customer, Amazon Review ⭐⭐⭐⭐⭐ • 2025 RX 350h

I've had two of these dashcam integrators and they have worked great! I'm currently using one in a 2021 Lexus RX350. I have an issue with sloppy wires and cables showing and this device solves that problem.

— Mac, Amazon Review ⭐⭐⭐⭐⭐ • 2021 RX 350

I personally use the Dongar Pro with a Viofo A229 Pro via USB-C in a '24 RX350h. The Pro has a bypass with a 3-way switch that has a 'parking mode' that allows the camera to be left on for 4 hours after the ignition is turned off.

— Bruhah_DenimGuy, r/Lexus • 2024 RX 350h

I just got my RX 350h about half a month ago and I'm looking for a good way to install a dash cam with parking mode (not hardwiring with fuse box).

— zhichenggeng, r/Lexus • RX 350h

Dongar vs. Hardwire Kits

Feature Dongar Adapter Mangoal / FitDVR Hardwire
Install time <5 minutes 30–60 minutes
Tools required None Trim tools, wire strippers
Fuse box access Not needed Required
Reversible Yes — unplug anytime Partially (wires may remain)
OEM appearance Factory-clean Visible wiring
Parking mode PRO / PRO+ with voltage cutoff Basic voltage cutoff only
Warranty concern None — OEM connectors Possible (fuse box modification)
USB-C output 18W true USB-C PD Varies / often micro-USB

Frequently Asked Questions

Which Dongar adapter fits my Lexus RX?

It depends on your year and model. 2023–2026 (RX 350, RX 350h, RX 500h): DCA-10B (mirror) or DCA-16T (TSS 3.0 computer). 2016–2022 (RX 350, RX 450h): DCA-10B (auto-dimming mirror) or DCA-12T (TSS 2.5 computer). 2006–2015: DCA-14A (auto high beam mirror), DCA-7B (economy mirror), or DCA-5B (domelight). Use the Compatibility Finder to confirm your exact fit.

Does the adapter work with RX hybrid models (RX 350h, RX 450h, RX 500h)?

Yes. All RX hybrid models are fully compatible with the same adapters as their non-hybrid counterparts. The hybrid system has no effect on the mirror or TSS connectors. In fact, hybrid RX models are ideal for dash cam parking mode — the high-voltage battery starts the engine, so the 12V battery can handle extended dash cam use more easily.

Is the Lexus RX good for dash cam parking mode?

Yes, especially hybrid models. The RX 350h, RX 450h, and RX 500h use a high-voltage battery system (up to 288V) to start the engine, meaning the 12V battery can tolerate more drain from a dash cam in parking mode. The Dongar PRO's low-voltage cutoff protection provides a safety net on all models — gas or hybrid.

Will the Dongar adapter affect my Lexus Safety System+?

No. The Dongar adapter uses a pass-through design — it plugs inline with your existing connector (mirror or TSS) and simply taps a small amount of power for the USB-C output. All original functions (auto-dimming, lane-trace assist, pre-collision, etc.) continue to work exactly as before. No signals are interrupted.

What dash cams work best with the Lexus RX?

Garmin Mini 2/Mini 3 work great with both Dongar Classic and PRO/PRO+. Viofo A229 Pro is excellent for parking mode with the PRO+ (dedicated Parking Mode CC setting). Vantrue cameras also work well. For the cleanest look in a Lexus, compact cameras like the Garmin Mini 3 are popular — they're nearly invisible behind the mirror. The PRO+ is recommended for Viofo cameras that need proper parking mode detection.

How do I know which adapter I need for my specific RX year?

The easiest way is to use the Compatibility Finder at dongar.tech/pages/finder. Enter your year, make (Lexus), and model (RX), and it will show you exactly which adapter fits. With 7 different SKUs covering the RX from 2006–2026, the Finder eliminates any guesswork.

Installation Resources

Product Install Pamphlet (PDF)
DCA-10B (10-Pin Mirror) Download PDF
DCA-16T (16-Pin TSS 3.0) Download PDF
DCA-12T (12-Pin TSS 2.5) Download PDF
Dongar PRO (PMA-01) Download PDF
Dongar PRO+ (PRS-01) Download PDF

As Featured In

TechRadar: "This ingenious adapter is the dash cam installation hack I've been waiting for"

autoevolution: "Dongar Dashcam Adapters Are the Automotive Accessory You Didn't Know You Needed"

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