STEERING LOCK SYSTEM PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

PRECAUTIONS WHEN CHECKING FOR DTCS

1. When the cable is disconnected from the negative (-) auxiliary battery terminal, the DTCs stored in the steering lock ECU are cleared. Be sure to record any output DTCs immediately.

2. Normally, with the power switch off, even if the Techstream is connected to the vehicle, the information stored in the smart key system related ECUs (the certification ECU (smart key ECU assembly), main body ECU, etc.) cannot be read. However, smart key system DTCs and Data List information can be confirmed even if the power switch is off using either of the two methods below:

   • Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins (the Techstream screen changes when communication begins).

   • Connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Key / Trouble Codes.

PRECAUTIONS WHEN REPLACING STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

1. If the steering lock ECU (steering lock actuator assembly) is replaced, be sure to confirm that the steering is unlocked by turning the steering wheel to the left and right before starting the hybrid control system. If the steering is locked for any reason, open and close a door with the power switch off, and then unlock the steering lock by pressing the power switch. This prevents the hybrid control system from starting while the steering is locked.

PRECAUTION FOR REGISTRATION

1. If replacing any of the following parts, refer to the registration procedures Click here.

   1. Certification ECU (Smart key ECU assembly)

   2. Power management control ECU

   3. Steering lock ECU (Steering lock actuator assembly)

   4. Electrical key transmitter sub-assembly (Key)