Hyundai Santa Fe (TM): Ignition System / Description and operation

Troubleshooting Trouble symptom Probable cause Remedy Engine will not start or is hard to start (Cranks OK) Ignition lock switch Inspect ignition lock switch, or replace as required Ignition coil Inspect ignition coil, or replace as required Spark plugs Inspect spark plugs, or replace as required Ignition wiring disconnected or broken Repair wiring, or replace as required Rough idle or stalls Ignition wiring Repair wiring, or replace as required Ignition coil Inspect ignition coil, or replace as required Engine hesitates/poor acceleration Spark plugs and spark plug cables Inspect spark plugs / cable, or replace as required Ignition wiring Repair wiring, or replace as required Poor mileage Spark plugs and spark plug cables Inspect spark plugs / cable, or replace as required