Hyundai Sonata: Immobilizer System - Body Electrical SystemHyundai Sonata: Immobilizer System

Auto Light Sensor. Repair procedures
Inspection In the state of IGN1 ON, when multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to auto lig ...

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Transaxle Control Module (TCM). Repair procedures
Replacement In the case of the vehicle equipped with immobilizer or button engine start system, perform "Key Teaching&quo ...

Telemetics Unit (TMU). Components and Components Location
Component ...

Battery replacement
The transmitter uses a 3 volt lithium battery which will normally last for several years. When replacement is necessary, use the following procedure. 1. Insert a slim tool into the slot and gen ...