Connecting devices to your 2015 BMW i3’s OBD2 port can be useful for vehicle monitoring and diagnostics. However, it’s important to be aware of the potential for increased power draw, especially when the vehicle is not running. The BMW i3, like many modern electric vehicles, utilizes a relatively small 12-volt battery. This battery primarily serves to power the car’s computer systems during startup, differing from traditional internal combustion engine vehicles that require substantial 12-volt battery capacity for cold weather engine cranking.
Experiences from Prius owners, particularly those with plug-in models, highlight the vulnerability of these smaller 12-volt batteries to even minor continuous power drains. A slightly elevated current draw can quickly deplete the battery, potentially preventing the car’s computer systems from initiating and leading to a no-start condition. This issue raises concerns about leaving devices, such as telematics systems like the State Farm Verizon in-drive monitor, constantly connected to the 2015 BMW i3 OBD2 port. These devices, designed to track driving habits, vehicle location, and even diagnostic data including 12-volt battery health, inherently draw power.
If you are considering using OBD2 port devices with your 2015 BMW i3, particularly those that require continuous connection, it is crucial to be mindful of the potential impact on the 12-volt battery. Understanding the power consumption of your chosen device and the capacity of the i3’s 12-volt system is advisable. Real-world experiences from BMW i3 owners regarding 12-volt battery drain when using OBD2 port devices would be valuable in assessing the actual risk and best practices.
