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I purchased a Blackvue DR900s-2ch along with Blackvue B-124 battery. I was planning to put the B-124 battery in the rear driver (left) side pouch and tap into the fuses in that rear panel. However, I cannot find a 20A or higher switched fuse within the rear fuse box. I tested all of them with a multimeter and there is a constant 12V on all of them. I even waited over 15 minutes to ensure that power consumption relay switches off the power. I even locked myself within the car to see if it was switching off. I have I cannot seem to find a switched 12V. My "Plan B" is to run a cable to the rear seat cigarette lighter outlet.
It surprises me that all of the fuses would have 12V constantly on them - even things like "Rear window defogger" or "Rearview camera, peripheral cameras". What am I missing?
Great suggestion. I was originally thinking that in my initial voltage reading and installation of dash cam and battery. The Blackvue B-124 battery can be monitored via Bluetooth using their battery app. That is how I initially realized the problem. During the installation, I originally assumed that the voltage I was reading would go off after a certain amount of time. After I finished I had my fob way out of range, doors shut and car locked/armed. I went to bed. When I woke, I checked on the battery level using the app. The B-124 battery level was at 100% and showed a 12 input voltage. After troubleshooting more, I realized that the voltages are constantly on the fuses.
I took the below image from the internet as an example screen shots from the battery app.
Great suggestion. I was originally thinking that in my initial voltage reading and installation of dash cam and battery. The Blackvue B-124 battery can be monitored via Bluetooth using their battery app. That is how I initially realized the problem. During the installation, I originally assumed that the voltage I was reading would go off after a certain amount of time. After I finished I had my fob way out of range, doors shut and car locked/armed. I went to bed. When I woke, I checked on the battery level using the app. The B-124 battery level was at 100% and showed a 12 input voltage. After troubleshooting more, I realized that the voltages are constantly on the fuses.
I took the below image from the internet as an example screen shots from the battery app.
Did you manage to make any progress with this? I'm in the exact same situation... Trying to find someone with a way around the lack of switched fuse.
i ran into this issue with my MKI SQ5. i assume the same applies to the MKII if folks are running into the same issue. i was trying to do an amp install in the back, near the battery and noted the same identical thing with the rear fuse panel. i was able to tap the cigarette lighter to get switched power.
Just curious, has anyone heard of testing the resistance between the cigarette lighter ground and chassis ground when the vehicle is off? Might prove the switched ground hypothesis.
Just curious, has anyone heard of testing the resistance between the cigarette lighter ground and chassis ground when the vehicle is off? Might prove the switched ground hypothesis.
No switched ground. Most modules located throughout the vehicle are powered constantly. The modules power everything. Data commands the module how and when to operate whatever it controls. Also, most modules are pretty good at reporting problems if you can understand their language with a dealer tool or VCDS.
11-06-2018, 06:13 PM
2018 SQ5 Rear Fuse Box Switched 12V
