Charging System Warning Light
The charging system warning light should come on when the ignition is turned on, then go out when the engine is running. If the light stays on while the engine is running, there is a malfunction in the electrical charging system. If the light comes on while you are driving, have the system checked by your Hyundai dealer as soon as possble.
See also:
Safety
The Hyundai Sonata is one of only two cars on the market that have received
both a Top Safety Pick designation from the Insurance Institute for Highway
Safety and a five-star overall safety rating ...
If engine doesn't turn over or turns over slowly
1. If your vehicle has an automatic transaxle, be sure the shift lever is in
N (Neutral) or P (Park) and the emergency brake is set.
2. Check the battery connections to be sure they are clean and t ...
Spark Plugs
Make sure to install new spark plugs of the correct heat range. ...