Gave the M to my grandsons a couple of weeks ago. The M has been "dead" the last few mornings. Previously, it would take several days (4-5 days) of non-use for it to be "dead." I had used a three day rotation with my other cars, and had a battery tender on it while it was in one of my storage garages, so it had not happened to me for a while. I also had a portable charger battery ready in the trunk in case it was needed. I changed out the battery about 2 years ago when this stuff happened the first time. The first battery failed and the dealer replaced that one. At one time the driver seat failed to work, but then later it did start working again OK. I am wondering if anyone can suggest what the problem could be if the battery is in fact OK? A "short" somewhere? Where? Alternator? Any thoughts would be helpful. Thanks.
Most auto parts stores will test battery and alternator on car for free. Suggest checking out the local Advance Auto parts to see if they can do this.
Do they have AAA? They can even do it at the house for them.