Water In Fuel Light: What It Means & What To Do

Tim Miller

Seeing the water in fuel light appear and having no idea what it means?

Don’t worry. This guide is here to help.

I’ll take you everything from its meaning to the way to troubleshooting this issue.

Ready to get started? Let’s dive in!

What Does the Water In Fuel Light Warning Mean?

The water in fuel light usually indicates that there is water present in the fuel filter. If this light remains on, DO NOT start your vehicle before draining the water from the fuel filter to prevent engine damage.

The appearance of the water in fuel warning light can vary depending on the make and model of the vehicle. In general, the warning light may look like a yellow or red droplet of water with a fuel tank or engine icon.

Ignoring this light can cause serious damage to your vehicle’s fuel system, so it’s best to have the issue addressed by a qualified mechanic as soon as possible.

Water In Fuel Light

Is It Safe to Drive with the Water In Fuel Warning Light on?

No. It is not safe to continue driving if the water in fuel warning light comes on. Driving with water in the fuel can lead to decreased engine performance, misfiring, stalling, or even total engine failure.

If you see this light, you should stop driving as soon as it is safe to do so and have the problem inspected and resolved.

What to Do When the Water In Fuel Warning Light Comes On

What to Do When the Water In Fuel Warning Light Comes On

If water is detected in the fuel separator filter while the engine is running or while the ignition is in the ON position, the water in fuel light will illuminate and an audible chime will be heard. At this point, you should stop the engine and drain the water from the filter.

Draining water from the fuel system is typically a job for a qualified mechanic. However, if you are experienced with car maintenance and have the necessary tools and equipment, you can try to do it yourself by following these general steps:

  • Turn off the engine.
  • Turn the filter drain valve counterclockwise. 
  • Turn the ignition to the ON position.
  • Leave the drain valve open until all water and contaminants have been removed. 
  • Close the drain valve by turning it clockwise when clean fuel is visible.
  • Turn off the ignition.

Keep in mind that these steps are general guidelines. And you should always consult your vehicle’s manual or a qualified mechanic for specific instructions on how to drain water from your fuel system.

What’s Next?

Don’t ignore the water in fuel warning light! It can cause the water to continue to flow in the fuel system and cause further damage to the engine, leading to even more costly repairs.

Regularly checking and maintaining your vehicle’s fuel system is crucial to prevent water contamination.

Have you ever tried to drain the water from your vehicle’s fuel filter yourself?

Please feel free to leave a comment below to let me know.

Learn more

Check Fuel Cap Warning Light: A detailed piece of writing provides you with the meaning of the check fuel cap warning light and how to fix it.

Oil Light: Acquire a comprehensive understanding of the oil light from the reasons behind its activation to the appropriate solutions.

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Information sourced from the owner's manual.