Mercedes All the gauges have stopped working mercedes benz 300…

19 Янв 2015 | Author: | No comments yet »
Mercedes-Benz F 300

Mercedes / All the gauges have working


Expert: — 12/22/2009


I have a 1983 Mercedes 300 SD and the gauges that indicate the the speed, the oil and everything stopped all at once. In addition, the signal have stopped flashing. happened two days after the plugs were replaced by a that services foreign and had to recharge the battery. Is this an of fuses or something else?



ANSWER: Patricia,

The problems you describe can be with a couple of things. The that you have had the vehicle on may have contributed to the failure. the glow plug replacement a may have become loose and may pulled out.

The Battery Battery should been disconnected during the operation.

You did not say why the battery was discharged but if the was high amperage and any of the circuits engage, it could have the over voltage/amperage relay to blow.

I would check all the connections under the hood. sure the battery is in excellent Diesels require considerably cranking amperage because of the the compression.

Check all the fuses. causes high resistance and of the connections. Aluminum is very to corrosion. If they are the ceramic type, and use aluminum burn I would replace these copper strip type. the fuse holder sockets and the of the fuses.

Make sure all the ground connections between the engine and the are clean and tight.



QUESTION: Thank you

for your quick response. The was totally dead and had to removed by the to recharge it. Should I go back to the to ask him to see if a wire may be loose, or pulled Or, should I check the over relay fuse to see if blown, it to check and see if that solves the His shop is a 45 mile drive my home, and he is overloaded with on so many other cars!



Patricia F.

ANSWER: I would suggest you phone the mechanic, particularly if you a good working relationship him/her. Explain the problem, and ask for

I would not hurt to check the relay fuse, and it it is blown, be replaced very easily for that a dollar.

When you the key, do you get any indicator lamps on you start. Like: check low washer fluid, bulb light etc.?



Mercedes-Benz F 300


I like to ask your expert on an issue with the fuel It seems that it gives readings when the fuel is at a level. It jerks back and when I have a little than half a tank of fuel. The caution light on and goes off several times as if, is a problem discerning actually how fuel is in the tank. Is there a gauge of some kind in the to prompt the fuel gauge to the amount of fuel that is there? Or, is there some mechanism that is causing erratic behavior? Please

Thanks so much,

Patricia F.



The fuel is controlled by the sending unit in the tank. The unit in the tank a float to determine the level. units use a coil of wire has voltage on it. The float arm rubs this coil and changes the length and thus the resistance. calibration the resistance it set to the dash Or there could be a loose between the sending unit and the gauge.

The gauge float can become or the wiring circuit can ware thus the erratic behavior.

on the sending unit location in the it can be pretty pricey to have the replaced.

I would begin by some diesel fuel cleaner through the tank. fuel by nature is very with deposits that can on the wall of the tanks and even the unit actuator. Actually has very good cleaning as it acts as a detergent to the fuel

Truck stops and some parts houses carry base additives. Just that this cleaning will end up in your fuel/water and you should be prepared to replace the if you start getting any issues the engine.

Merry Christmas



Mercedes-Benz F 300
Mercedes-Benz F 300

Mercedes-Benz F 300
Mercedes-Benz F 300

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