Sooo, I've been driving Benz EVs for a few years now, starting with a B-Class electric back in the day before moving to the newer EQ platform. Honestly, the 12V battery issue is highkey the biggest headache. I learned the hard way with my first setup—I tried to save a few bucks by DIY-ing a hardwire kit I found online, and literally three days later, I got that dreaded '12V Battery Critical' message on my phone. The car's power management is basically way too smart for its own good and sees any tiny draw as a major fault.

For your situation, I would suggest looking at it from a long-term cost perspective. Here’s what worked for me after a lot of trial and error:

* **Avoid the fuse box if possible:** Unless you're using a specific voltage-sensing kit designed for EVs, tapping into the fuse panel is risky business for the warranty.
* **The mirror-tap route:** I ended up going with a setup that plugs directly into the rain sensor/mirror housing power. It’s way cheaper than the dealer options and looks totally factory because there are no wires hanging down.
* **OBD power:** Some newer systems use the OBD port for power, which is super easy to install but can sometimes keep the car's computers 'awake' longer than they should be.

Basically, I realized that spending a bit more upfront for a housing-integrated unit saved me hundreds in potential diagnostic fees at the dealership. My current setup looks like it came with the car and hasn't tripped a single sensor in over a year. Just make sure to double-check if your EQE has the tech package with the built-in dashcam software first—sometimes you can just buy a license in the Mercedes me store and avoid hardware entirely! gl!

In my experience, dealing with EQE electronics is basically like diffusing a bomb lol. You gotta be *reallyyy* careful because the 12V battery management system is super sensitive to parasitic draws. Before I give a full technical breakdown, are you looking for 24/7 parking surveillance or just recording while you're driving? Also, does your car actually have the Augmented Reality hardware for the MBUX dashcam app already?

Here is how I’d compare the safest approaches:

* **The OEM Software Activation:** Safest for ur warranty since it uses the built-in cameras. The downside is it usually requires a manual start every time and lacks a true parking mode.
* **External Battery Setup:** If you go with a brand like Blackvue or Thinkware, you MUST use a dedicated LiFePO4 battery pack. It's the only way to avoid the "12V Battery Critical" errors that plague these EVs.

Honestly, I've seen too many people fry modules by tapping the wrong fuse. If you want reliability, stick to the factory app or a totally isolated battery system. gl!

For your situation, I've actually tried two different setups on my EQE and honestly, it's been a bit of a journey... lol. Here’s my take on the best options:

* **The "Factory" Look:** If you want it to look 100% stock, Fitcamx Dash Cam for Mercedes-Benz EQE is the way to go. It replaces the plastic shroud behind the mirror. Installation is basically plug-and-play with the rain sensor, so no wire cutting. I mean, it literally looks like it came from the factory.
* **The Pro Performance:** I initially used the Vantrue E3 3-Channel Dash Cam 1944P+1080P+1080P because I wanted better night vision, but the battery drain was highkey annoying. I had issues with it triggering the 12V battery management system... kinda scary in an EV.

Unfortunately, the built-in Mercedes dashcam app (if you have the Mercedes-Benz Dashcam Software Package) is super limited cuz it doesnt record while parked and you gotta manually start it every time. Super weird design choice by MB tbh.

Basically, if you want it clean and simple, go Fitcamx. If you need serious parking mode protection, you'll definately need an external battery pack like the BlackVue Power Magic Ultra Battery B-130X so you dont stress the 12V system. gl!

For your situation, I'd honestly stick with the Thinkware U3000 Dual Channel Dash Cam 64GB because it has amazing low-power parking modes! Seriously, get a pro to wire it so it's SAFE!!

Honestly, I’ve been DIYing my Benz setups for a decade and these new EQs are a whole different beast when it comes to the electrical loop. If you want to avoid the "critical battery" headache without paying a pro a ton for a custom install, look into the Garmin Dash Cam 67W paired with the Garmin OBD-II Constant Power Cable. It’s basically the ultimate DIY hack for Mercedes EVs tbh. Instead of messing with the fuse box—which is usually where people trigger those sensitive parasitic draw sensors—you just plug directly into the OBD-II port. It’s super clean and you can tuck the wires behind the A-pillar in like 10 minutes. The best part? That specific cable has a built-in timer and voltage switch so it shuts itself off way before the 12V gets low. I mean, it’s not *quite* as hidden as the mirror shroud options, but the peace of mind knowing you haven't spliced into a $100k wiring harness is worth it!!! Plus, if you ever need to take it in for warranty work, you just unplug it and there's zero trace you were ever there. Just keep the cable settings conservative so the MBUX doesn't get cranky.