Hyundai Elantra: Electrical System - General Information - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Electrical System

1.
Be sure to disconnect the battery cable from the negative (-) terminal of the battery.
2.
Never pull on the wires when disconnecting connectors.
3.
Locking connectors will click when the connector is secure.
4.
Handle sensors and relays carefully. Be careful not to drop them against other parts.