STEP 1. Replace the battery in the keyless operation key and recheck the DTC.
(1) Replace the battery in the keyless operation key.
(2) Push the lock switch or unlock switch of keyless operation key.
(3) Check if the DTC is set.
Is the DTC set?
Perform troubleshooting if KOS&OSS-ECU DTC except No.B1A10, B1A11, B1A12 or B1A13 is set. Then go to Step 2. The diagnosis is complete.