MB B EV and Toyota RAV4 EV share the same Tesla drivetrain (motor, firmware and battery technology)
Mercedes started selling the MB B EV in the U.S. July 2014.
Toyota sold the RAV4 EV from 2012 to 2014, there are approximately 2,500 of them on the road today.
Toyota is doing a recall because of Tesla's drivetrain issues (hardware or software I am not sure).
Here is Toyota's recall press release dated 3/11/2015:
http://pressroom.toyota.com/releases/to ... arch11.htm
Here is Toyota's defect information report dated 3/11/2015:
http://www-odi.nhtsa.dot.gov/acms/cs/ja ... 3-3968.pdf
In it they describe the problem: "The Electric Vehicle Traction Motor Assembly in the subject vehicles is part of the propulsion system, which contains a drive inverter (DI), DI electronic control unit (ECU), electric motor, motor speed sensor, shift control actuator, and transaxle assembly. The motor speed sensor detects the electric motor speed and rotational position, and sends this information as a signal to the DI ECU. Due to a software issue, the DI ECU may not be able to determine the rotational position of the motor, which causes a speed sensor error code. This will trigger a “Check EV System” warning message on the instrument panel, turn on a malfunction indicator lamp (MIL), and cause the electric motor to shift to “neutral”, resulting in a complete loss of drive power. A complete loss of drive power may increase the risk of a crash."
And on page 2 and 3, where the supplier is Tesla, they said: "November 2014 - February 2015. Additional reports were received, and the supplier continued to investigate the cause of the loss of drive power. During further investigation, the supplier determined that hardware variance is larger than firmware (software) tolerance. This can cause the drive inverter to be unable to determine the rotational position of the motor. If this occurs, a “Check EV System” warning message on the instrument panel will be triggered, a malfunction indicator lamp (MIL) will come on, and the electric motor will shift to “neutral”, resulting in a complete loss of drive power. "
Follow these links to keep up with MB B EV's sudden-loss-of-drive story:
1) List of MB B EV owners who experienced sudden loss-of-drive: viewtopic.php?f=8&t=380
2) MB B EV loss-of-drive: viewtopic.php?f=8&t=359
3) MB B EV drivetrain replacement: viewtopic.php?f=8&t=374
4) RAV4 EV recall status: http://www.myrav4ev.com/forum/viewtopic.php?f=7&t=1558