Hyundai Elantra MD/UD: Seat Belt Switch. Description and 
Operation - ISG (Idle Stop & Go) System - Fuel System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra MD/UD: Seat Belt Switch. Description and Operation

Description

Via the seat belt/Door switch, the ISG function can detect that the driver has fastened the seat belt/door. If the driver has not fastened the seat belt/door, the ISG function reacts as follows. If the seat belt or door is opened, the engine must not be started or stopped by the ISG function for safety reasons.

Installation
1. Install in reverse of removal. ...