BMW I3 Loss of Power Bars - Issue Returns

Показать описание

Back in June of last year (2019) I took my car (2014 REX - 52k miles) to the BMW Dealer to address the abrupt and almost complete power loss when the REX turns on and battery hits 4.5% - I showed them the BMW Service Bulletins on the issue and they agreed the software update should fix - and it did for about 6 months. I tested it well; I drove it at 80mph on the highway (when I know the REX can't keep up) and battery hit 2.5% and I still had full power bars. Fixed I said. Looks like it was short lived though, as this was my experience yesterday. I was driving on a 60mph road when suddenly I lost all but one power bar when battery dipped to 4.5% / 5.0%

The AC/Heat was NOT running. Outside temp was in the 70s (I'm in FL.) The software update BMW performed in June cost me $350 and was not covered under any warranty. It also cut my EV Range by 20% or so. Where before the GOM would show 90-100 miles (I would get 70-80 actual) post update GOM shows 70-80 (and I get 55-65 actual) I wonder if my battery deteriorated further and BMS can't account for the loss? BMW said 74% capacity remaining back in June.