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I got an EV system fault error (EV Service Required or something along those lines) today after the car had been parked for a few days up north. Temperature was -10C, the drive battery was at about 80% SOC, and I had run the remote heater for a few minutes before departing. Despite the error message the car seemed to work so I headed off. After about 25km the car went into turtle mode and then shortly thereafter stopped since the drive battery was depleted. I had two kids in the car on a remote road, yikes! Luckily all that was needed was to power off the car and restart it and the ICE then started. I assume the initial part of the trip in EV-mode was enough to charge the auxiliary 12v battery and get the system back to "normal".I find it ridiculous that the auxiliary battery isn't kept charged by the drive battery when the car is not powered on. In retrospect I did notice that the interior light was fairly dim when the opening the door, so had I been more alert I could have charged the 12v battery a bit before departing.Does anyone have a work-around (i.e. to force the car to charge the 12v battery)? The 12v battery is over 4 years old, but I should be able to leave it a few days in cold weather without having to charge it. Seems crazy to be charging both batteries separately.
I got an EV system fault error (EV Service Required or something along those lines) today after the car had been parked for a few days up north. Temperature was -10C, the drive battery was at about 80% SOC, and I had run the remote heater for a few minutes before departing. Despite the error message the car seemed to work so I headed off. After about 25km the car went into turtle mode and then shortly thereafter stopped since the drive battery was depleted. I had two kids in the car on a remote road, yikes! Luckily all that was needed was to power off the car and restart it and the ICE then started. I assume the initial part of the trip in EV-mode was enough to charge the auxiliary 12v battery and get the system back to "normal".
I find it ridiculous that the auxiliary battery isn't kept charged by the drive battery when the car is not powered on. In retrospect I did notice that the interior light was fairly dim when the opening the door, so had I been more alert I could have charged the 12v battery a bit before departing.
Does anyone have a work-around (i.e. to force the car to charge the 12v battery)? The 12v battery is over 4 years old, but I should be able to leave it a few days in cold weather without having to charge it. Seems crazy to be charging both batteries separately.
