Toyota Yaris: Before Driving / Keys

Before Driving

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Keys

Smart key Auxiliary key Key code number plate To use the auxiliary key, press the knob and pull out the auxiliary key from the smart key. A code number is stamped on the plate attached to the key set; detach this plate and store it in a safe place (not in the vehicle) for use if you need to make a replacement key (auxiliary key)...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: VEHICLE CONTROL HISTORY (RoB)

VEHICLE CONTROL HISTORY (RoB) DESCRIPTION (SFI SYSTEM) Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior. If the customer states that the engine stalls or will not start, it may be possible to diagnose the cause of the malfunction by checking the vehicle history information and freeze frame data...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Antenna Coil Circuit Voltage Out of Range (B27841C)

DESCRIPTION When an open or short circuit is detected in the transponder key amplifier coil built into the engine switch, the certification ECU (smart key ECU assembly) stores this DTC. This DTC is also stored as a history DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B27841C Antenna Coil Circuit Voltage Out of Range The transponder key amplifier coil built into the engine switch is open (see below) or shorted (determined by communication with certification ECU (smart key ECU assembly))...