Water in Fuel Indicator Symbols

Water in Fuel

These are all Water in Fuel Indicator symbols found in diesel powered vehicles. Diesel powered vehicles are equipped with separators that remove water from the fuel.  Note that if you have just re-fueled, the fuel may be contaminated. The engine should be switched off as soon as possible or the fuel injection system could be damaged.

• But first, is one of these truly your symbol?? If yes, then continue on below.
• Otherwise return to our main Picture Symbols page and scan again!

Each image includes at least a drop of water or wavy lines or both. Other images are meant to resemble canisters. These filters need to be serviced periodically, and one of these lights serves to tell you when. This filter system is termed a Diesel Fuel Conditioner Module (DFCM) by some manufacturers. The final image looks like a tank or box with lines in the bottom half and a possible open area at the top.

So unless as noted above you have just refueled, the vehicle is safe to drive, but the water should be drained as soon as possible.

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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the  use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.

These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.

Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.