11 reports of sudden power loss linked to 12V battery
First step in what could become recall
US regulators are currently looking into the Porsche Taycan over reports of a loss of power. The National Highway Traffic Safety Administration said that more than 12,000 models could be affected by the evaluation.
The Office of Defects Investigation, the cleverly-named department that handles the actual investigative work that comes before a vehicle recall (or precludes a recall), reports that it has nine direct complaints and two field reports regarding the 2020 and 2021 Porsche Taycan “alleging a loss of motive power while in motion at any speed without warning to the driver.”
This is a preliminary evaluation to determine the scope and severity of the potential problem, which the agency said could affect around 12,146 Taycans.
However, as Porsche has sold 6,555 Taycan units in the US and 1,146 in Canada, it’s unclear how over 12,700 models could be affected. According to Patrick St-Pierre, Public Relations Manager at Porsche Canada, 9 complaints were registered in the US.
Automotive News reports that NHTSA said the issue with the electric vehicle losing power is related to the 12V conventional battery and not the high voltage electric system. The report said that a loss of charge in the 12V battery “may deactivate the entire electrical system and prevent the vehicle from operation.” While the drive power of an EV comes entirely from the high-voltage battery, all current models use a conventional 12V battery to power the rest of the vehicle systems. It allows for parts commonality with existing models and prevents the need for more shielded high-voltage wiring for all components.
Some of the complainants allege that they had received an electrical system error warning, but only after the vehicle stalled, while others alleged no error messages at all. NHTSA investigations start with the preliminary evaluation step, after that the organisation can close the investigation or move into next phases.