MoreliaViridis wrote:My other original post in on page 10. The condition happened after use of the REX, charge. Basically, engine light went on along with drivetrain malfunction warning, malfunction warning went off then engine light went off.
I then used the car for a couple days, charging with in garage level 2 charger with all warnings off while not using the REX. I thought I'd to try and get some warning lights back on, so ran the battery down to have the REX activate. It did run for a few miles before I got home, no warnings or engine light. I parked in the garage, charged on a level 2 charger for a few minutes, unplugged the charger, turned on the car and the engine light was on without any other warnings and the system check saying "all systems OK". I drove the car about 10 miles with the engine light on and the REX ran to support the demand. I got home, plugged in the level 2 charger to full charge. Engine light still on at that point the next morning. I drove to work. Engine light still on. Currently our weather has been in the 108F to 120F range and very dry. I had not washed the car at any point when the warning lights came on. I figured I'd drive the car through the car wash and see if the humidity or rapid cooling of outside air did anything. The engine light is still on and the in center dash system check says everything is OK.
I'm guessing the little engine light is going to turn off again at some point, but it's on for now.
Here's an update on my last post quoted above.
The light turned off on its own. The light then turned back on a couple days later. I went to the dealer for a quick charge and some snacks at the compliment area. While there I asked about the engine light. They were quite nice. The service main guy sat down in my car while I explained pretty much every event mentioned in my previous posts. Man, he was patient and analytical. Fantastic guy. As the vehicle was working normally other than the engine light being on I decided to go home without service for the issue. I should mention there has yet to be a service performed on the car. The light remained on with all systems OK for a couple days through nightly charging cycles on my level 2 charger one night and then on my level 1 charger another. The engine light remained on with all systems OK. That day I went to the dealer for another quick charge and snacks and figured I'd ask the Genius guys about the light. There were two of them there, super nice, and informative, but not any particular idea about the engine light. I then proceeded to go to the quick charge station to leave, used my charge point deal to disconnect, unplugged the quick charger, and drove off. The engine light was then off. I went home that night, charged on level 2 charger, used the car the next day, no light, home that night, charged and the light was on the next morning.
Here's my observation so far. When the light comes on it may occur after charging either part way or fully and either after the REX has been used previously or not used. When the light is on and then shuts off it may occur after charging. It's gone off with both my level 2 charger and the quick charger at the BMW dealer. The REX works normally and the battery fully charges. No doubt as I've not had service the codes for error still exist.
As a side note it's very hot here in Scottsdale, AZ this time of year. I park my car outdoors during the day at work where the parking lot is at least 130F or higher in the middle of the day. It's hot enough for the warnings to occur which lead the car to believe pedestrians and other obstacles are around to be driven over. That condition can be duplicated each time I put the sun screen in the windshield and the car sits in the sun. The waring always disappears after you drive the car to cool the thing down a bit, shut off the car and start it again.