![How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports](https://s3.us-east-2.amazonaws.com/prod.mm.com/uploads/2021/05/17/1621292216_img_1717_mmthumb.jpeg)
How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports
How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports
![How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports](https://s3.us-east-2.amazonaws.com/prod.mm.com/uploads/2021/05/17/1621281020_img_7038_mmthumb.jpeg)
How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports
Detailed step by step diagnostic DIY ... dead battery ... parasitic current drain | BimmerFest BMW Forum
![How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports](https://s3.us-east-2.amazonaws.com/prod.mm.com/uploads/2021/05/17/1621281109_img_9187_mmthumb.jpeg)
How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports
![Patiently waiting for my car to go to sleep. Parasitic battery drain problem. FSR was changed due to the blower fluctuating from high to low on its own. Resolved that issue but Patiently waiting for my car to go to sleep. Parasitic battery drain problem. FSR was changed due to the blower fluctuating from high to low on its own. Resolved that issue but](https://preview.redd.it/ygv0d45e0mry.jpg?width=640&crop=smart&auto=webp&s=5457ae9f95b6c92864a45bddcf59d9d5a2bbfc32)