Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Repair Instruction: Initialization: Initialization
- FOR VEHICLES EQUIPPED WITH SMART ACCESS SYSTEM
- Immediately after the battery terminal is reconnected, the main body ECU will not function, and therefore, the smart access system will not operate. To activate the main body ECU, perform a wireless door unlock or lock operation.
- If the battery has been discharged, the engine cannot be started even after the battery has been recharged because the steering lock position cannot be recognized correctly. To allow the steering lock ECU to learn the steering lock position, initialize the steering lock ECU.
- To start the engine after the battery terminal is reconnected, perform the following:
- Open and close the driver's door.
- Wait for 10 seconds or more.
HINT:
The first attempt to start the engine will fail because the steering lock ECU has not learned the steering lock position yet. This does not indicate a malfunction. The engine can be started normally on the second or subsequent attempt.
- INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY NOTE:
If the sliding roof drive gear is replaced or if the battery is removed during sliding roof operation, the sliding roof drive gear will require initialization. If initialization is not performed, the following functions will not operate: auto operation and key off operation.
- Turn the engine switch on (IG).
- Make sure that the sliding roof is fully closed.
- Push and hold the CLOSE switch or the UP switch until the following movement finishes: Tilt up → approximately 1 second → tilt down → slide open → slide closed.
- Check that the sliding roof stops at the fully closed position.
- Finish the initialization.
- Check that the AUTO operation works normally.NOTE:
If the following conditions occur during initialization procedure, initialization will fail.
- Engine switch is turned off.
- Sliding roof control switch is released while sliding roof is operating.
- Vehicle speed is 5 km/h (3 mph) or more.
- Communication is cut off.
- Another switch is turned on during initialization.
- The vehicle experiences a strong vibration during initialization, such as the slamming of a door.
HINT:
- If the sliding roof cannot be fully closed or its position has become misaligned, perform initialization again.
- If the roof glass stops moving or starts moving in the opposite direction while the CLOSE or UP switch is held down, continue to hold the switch for another 10 seconds or more to return the sliding roof control ECU to an uninitialized condition. Then perform the initialization procedure again.
- If the AUTO operation function and jam protection function do not operate after the drive gear has been reset, replace the sliding roof drive gear (sliding roof ECU).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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