Fuel Pump Out?
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Joined: Oct 2010
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Fuel Pump Out?
This Monday morning my car would not start. It gave a very short try but then no start. The engine turns over very well and easily so I don't think it is a starter or battery issue. My battery is only 1 1/2 years old.
I'm suspecting the fuel pump went out. I checked all the fuses listed in the fuse chart and all fuses that I found were good. Some fuses were not in the marked places at all, there are 6 - 7 fuses marked for fuel pump.
Other than a fuse I would think there is a relay for the pump but the chart does not list that. Anyone know if there is a relay for the pump and where it might be located at?
Did not have time to check codes yet. My suspicion is due to not hearing the fuel pump prime noise when I turn the power ON.
I'm suspecting the fuel pump went out. I checked all the fuses listed in the fuse chart and all fuses that I found were good. Some fuses were not in the marked places at all, there are 6 - 7 fuses marked for fuel pump.
Other than a fuse I would think there is a relay for the pump but the chart does not list that. Anyone know if there is a relay for the pump and where it might be located at?
Did not have time to check codes yet. My suspicion is due to not hearing the fuel pump prime noise when I turn the power ON.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,123
Likes: 1,288
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
This Monday morning my car would not start. It gave a very short try but then no start. The engine turns over very well and easily so I don't think it is a starter or battery issue. My battery is only 1 1/2 years old.
I'm suspecting the fuel pump went out. I checked all the fuses listed in the fuse chart and all fuses that I found were good. Some fuses were not in the marked places at all, there are 6 - 7 fuses marked for fuel pump.
Other than a fuse I would think there is a relay for the pump but the chart does not list that. Anyone know if there is a relay for the pump and where it might be located at?
Did not have time to check codes yet. My suspicion is due to not hearing the fuel pump prime noise when I turn the power ON.
I'm suspecting the fuel pump went out. I checked all the fuses listed in the fuse chart and all fuses that I found were good. Some fuses were not in the marked places at all, there are 6 - 7 fuses marked for fuel pump.
Other than a fuse I would think there is a relay for the pump but the chart does not list that. Anyone know if there is a relay for the pump and where it might be located at?
Did not have time to check codes yet. My suspicion is due to not hearing the fuel pump prime noise when I turn the power ON.
So, had the car towed to the dealer and they said the car started up just fine after they charged the battery. They could not find anything wrong other than there is a TSB for software update for preventing "flooding" during cold weather start up. Never heard of such software update but they did this for my car.
I was also told that if I had held the gas pedal fully pressed it would have started.
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^ yes, but that was with the old school carburetor to hold the butterflies open. Not sure what this does with an FI engine. I have never heard of this pedal stomp with an FI engine. Maybe I will check the manual and learn something.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,123
Likes: 1,288
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
