Question about 2003 Volkswagen Golf

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Fuel gauge inaccurate & warning light always on.

The warning comes on when starting up. Sometimes the needle moves up to first section. Despite filling up I've run out of fuel on three occasions.
Also if parked up for two days there is no power ( new battery fitted & charging rate OK). Help

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Hi. the inaccurate fuel gauge is easily fixed by replacing the fuel guage sending unit that is located in the fuel tank. this sending unit sends the appropriate signal the the gauge on the dash. all calculations are configured by the sending unit and if this device is malfunctioning, it will not send an accurate reading to the fuel gauge. simply replacing this device will fix the fuel guage issue you are having at this time.

Concerning the Amp drain after two days. this is caused by some sort of energy drain that can be in a faulty vacuum pump that isn't shutting off or, some sort of defect in the ECM. you could also have a faulty fuel pump relay that isn't shutting of and this will slowly drain energy from the battery within a two day period as well.

You can narrow down the battery drain by using a volt meter(needle) or multimeter. open the fuse box located on the drivers side below the dash. pull the fuse box door and expose the entire fuse box. you will need to pull each individual fuse independently to test if the actual slot is being used with the ignition switch in the off position.

Use the fuse slots contact prongs for testing the current level if any. with the ignition switch off, test all slots for live current feed. each slot that is dead is not affected and you may reinsert the respective fuse but, if you run across a live slot that is receiving a current while the ignition switch is in the off position, this specific slot will be the affected device that is draining the battery.

Test all fuse box slot accordingly. you will find the drain with this procedure.

Please rate and god bless:)

Posted on May 13, 2009


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