Draining Water from the Fuel Filter

If the fuel filter warning lamp illuminates while driving, this means water has accumulated in the fuel filter. In this case, drain the water as described below.
1. Loosen the drain plug at the bottom of the fuel filter.

2. Slowly operate the hand priming pump 6 or 7 times to force the water out through the drain plug.
3. When water no longer flows out, tighten the drain plug.
4. Loosen the air bleed plug and release the air. (Refer to "Bleeding the Fuel System".)
5. Check that the warning lamp illuminates when the ignition switch is turned to the "ON" position, and goes off when the engine is stopped.
If you have any questions, contact the nearest authorized Hyundai dealer.
CAUTION:
1. Do not smoke or bring an open flame near the vehicle while bleeding the fuel system.
2. Be sure to thoroughly wipe up any spilled water, as fuel mixed with water may ignite and cause a fire.
Test yourself
A quick Hyundai H1 quiz: every answer comes with an explanation and a link to the manual page.