Toyota Yaris: Security System / Modification and Add-On Equipment

Security System

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Immobilizer System

The immobilizer system allows the engine to start only with a key the system recognizes. If someone attempts to start the engine with an unrecognized key, the engine will not start, thereby helping to prevent vehicle theft...

Other information:

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Removal

REMOVAL CAUTION / NOTICE / HINT HINT: When the cable is disconnected/reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used. Learning completes when vehicle is driven Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Lane tracing assist system Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more...

Toyota Yaris XP210 (2020-2025) Owner's Manual: Key Battery Replacement

If the buttons on the smart key are inoperable and the operation indicator light does not flash, the battery may be dead. Replace with a new battery before the smart key becomes unusable. The following conditions indicate that the battery power is low: The KEY indicator light (green) flashes in the combination meter for about 30 seconds after the engine is switched OFF...