NHTSA complaint #11560146

Owner complaint summary

Subarus have a battery drain problem. Frequently, my car would unexpectedly have a dead battery and not start. This is a safety issue for anyone needing to drive as part of an emergency response, to a hospital, to a doctor, etc. Being unexpectedly unable to drive at all could leave people stranded on cold nights, on the side of the road, or unable to get to necessary services/meals/warmth/ etc. The issue is a common one for Subaru owners like me, and there was a class action lawsuit on the issue for 2015-2020 Subarus. That lawsuit was settled with a battery replacement warranty extension, and a software update to the ECM. Replacing the battery and updating the ECM software did not solve the problem. Not for me and not for many others. The real source of the parasitic drain is the DCM. Subaru knows this and dealerships will readily admit it is a widespread common problem, with the DCM, an expensive part, on backorder, and weekly repairs being done at most Subaru dealerships to replace faulty DCMs. But it is not covered under the class action settlement, and there is still no recall for it. Subaru should be accountable to ensuring their car batteries are not unexpectedly dead, and that people can drive when needed, and their cars can start. This is a widely spread issue, and Subaru dealerships will try to hide the issue in the software update, which frequently doesn't fix the problem, when they know the real issue is that a replacement DCM is needed.