قابس خدمة الجهد العالي غير مستقر تمامًا

The removable link a technician pulls to disconnect the traction battery before working on it — deliberately designed to break the interlock and power-off circuits obviously when it is anything less than fully home, because ambiguously connected is the one state a safety disconnect must never occupy.

A hybrid that will not power on after service work near the battery has this at the top of its list. The plug seats in two stages on most designs — pushed home, then a lever or latch rotated to lock — and stopping at stage one leaves the vehicle immobilised with interlock or power-off codes stored. Reseating it is the entire repair. It costs nothing to check and is embarrassing to discover after an afternoon of diagnosis, which is exactly why it goes first.