Starting Problems - E550 (5.5l)
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Junior Member
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Mercedes E500 AMG
Starting Problems - E550 (5.5l)
Have replaced CSP sensor and relays
Still not starting when hot but starts cold.
I'm now left with the dealer saying I have to replace ECU!
Anyone know where I can get one repaired in the UK?
Thanks
Still not starting when hot but starts cold.
I'm now left with the dealer saying I have to replace ECU!
Anyone know where I can get one repaired in the UK?
Thanks
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
Likes: 46
From: dmv
2009 E550 2000 Honda civic mash n' go
Bite the bullet and cough up the money for the ecu. your voltage on pins 4/17 isn't dropping during cranking-cause, poor solder connections. Remedy-replace ECU with factory benz one so it has a warranty and you know it is done correctly.
Just fixed a car with the same issue, customer took the cheap route in getting it repaired, needless to say it got towed and fixed correctly with OEM parts... GL
Just fixed a car with the same issue, customer took the cheap route in getting it repaired, needless to say it got towed and fixed correctly with OEM parts... GL
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From: dmv
2009 E550 2000 Honda civic mash n' go
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From: V E G A S
1922 Ford Model T / no OBD
I replaced perfectly CPS on ML55 on forum advice once, what teach me to do really good troubleshooting before sinking big money in the job.
In my case fuel pump had bad electrical connectors inside the tank.
Talk about fire inside the tank.
In US fuel gauges cost $19, so at least one possibility easy to rule out.
In my case fuel pump had bad electrical connectors inside the tank.
Talk about fire inside the tank.
In US fuel gauges cost $19, so at least one possibility easy to rule out.
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
Likes: 46
From: dmv
2009 E550 2000 Honda civic mash n' go
I replaced perfectly CPS on ML55 on forum advice once, what teach me to do really good troubleshooting before sinking big money in the job.
In my case fuel pump had bad electrical connectors inside the tank.
Talk about fire inside the tank.
In US fuel gauges cost $19, so at least one possibility easy to rule out.
In my case fuel pump had bad electrical connectors inside the tank.
Talk about fire inside the tank.
In US fuel gauges cost $19, so at least one possibility easy to rule out.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,797
From: V E G A S
1922 Ford Model T / no OBD
Not really. That was over 10 years ago, when even not too many mechanics knew what CPS is.
It did fit the description of very common at the time CPS failure.
Point is that several things can have the same symptoms and unless you hook up a gauge or SD to them, you will never know.
It did fit the description of very common at the time CPS failure.
Point is that several things can have the same symptoms and unless you hook up a gauge or SD to them, you will never know.
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Mercedes E500 AMG
Replace ECU
Very happy to report back that the car is now working properly. I took it to Mercedes Benz, Chelsea London who first replaced the fuel pump. The same problem was there with the new fuel pump. I was refunded for this work and they then agreed to replace the ECU free of charge with a new part. Problem sorted after they had the car for 5 weeks.
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Thread Starter
Junior Member
Joined: Nov 2015
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Mercedes E500 AMG
Yes indeed, I already knew it wasn't a fuel pump problem but they insited on replacing this first. With the new fuel pump not sorting the problem out I was refunded in full for this job and a new ECU fitted for free. I was given a courtesy car for almost all the time they were fixing the car , some 5 weeks in total. All in all it was a good service offered in Chelsea. Lets hope this ECU doesn't do the same thing!
MBWorld Fanatic!
Joined: Apr 2015
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From: dmv
2009 E550 2000 Honda civic mash n' go
Not really. That was over 10 years ago, when even not too many mechanics knew what CPS is.
It did fit the description of very common at the time CPS failure.
Point is that several things can have the same symptoms and unless you hook up a gauge or SD to them, you will never know.
It did fit the description of very common at the time CPS failure.
Point is that several things can have the same symptoms and unless you hook up a gauge or SD to them, you will never know.
You have some nerve talking about people on here not know much about the product. Basic electronics isn't even necessary to test a cps even in 2006 and here you are saying,"not really that was ten years ago". Fool
, the dammn M272/273 engine came out ten years ago so in reality there was more then enough resources to test a cps pre-2006 as you state. Now that I stand corrected lets get back "on topic"
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
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From: dmv
2009 E550 2000 Honda civic mash n' go
Yes indeed, I already knew it wasn't a fuel pump problem but they insited on replacing this first. With the new fuel pump not sorting the problem out I was refunded in full for this job and a new ECU fitted for free. I was given a courtesy car for almost all the time they were fixing the car , some 5 weeks in total. All in all it was a good service offered in Chelsea. Lets hope this ECU doesn't do the same thing!
However I'm sure you are super stoked and happy to have your whip back!!!! although i know that rental was nice and new probably hahaha
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From: V E G A S
1922 Ford Model T / no OBD
cmirv you do have real reality problem.
The engine I was quoting was 2000 model and trust me - back in 2006 knowledge how to diagnose CPS was not there. Can't say if the tool was available as nobody on the net would know about it.
The story above proves my point that even in 2016 tools for proper diagnosis are unknown.
What else I can say. You troll just for the sake of trolling, but we know who your teacher was.
The engine I was quoting was 2000 model and trust me - back in 2006 knowledge how to diagnose CPS was not there. Can't say if the tool was available as nobody on the net would know about it.
The story above proves my point that even in 2016 tools for proper diagnosis are unknown.
What else I can say. You troll just for the sake of trolling, but we know who your teacher was.
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
Likes: 46
From: dmv
2009 E550 2000 Honda civic mash n' go
cmirv you do have real reality problem.
The engine I was quoting was 2000 model and trust me - back in 2006 knowledge how to diagnose CPS was not there. Can't say if the tool was available as nobody on the net would know about it.
The story above proves my point that even in 2016 tools for proper diagnosis are unknown.
What else I can say. You troll just for the sake of trolling, but we know who your teacher was.
The engine I was quoting was 2000 model and trust me - back in 2006 knowledge how to diagnose CPS was not there. Can't say if the tool was available as nobody on the net would know about it.
The story above proves my point that even in 2016 tools for proper diagnosis are unknown.
What else I can say. You troll just for the sake of trolling, but we know who your teacher was.
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Joined: Jun 2010
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mb c280
My Indy repair shop just called with diagnosis. Failed ECU: $1500 + about $200 for install and programming.
Maybe thats why I've had engine fan on intermittent high speed for the pst year.
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Joined: May 2015
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From: Northern California
E320
My E320 (Bluetec) is blowing F57.. narrowed down to this..HELP!
After returning from vacation, I started my car (sat for 2 + weeks), ran fine for about 1 min, then died...
Unable to start or turnover. Electric Radiator fan kicks off like it wants to leave without the car.
Found f57 (25 AMP) popped. Replaced..popped..replaced popped.
Tried my OBD2 reader, nothing..error.
Started digging/researching, finally went to my indie shop, he shared the diagram showing what fed off F57..
Of course my ECU (without power, won't talk to anything) is on it as is the relay that kicks on the fan (by design).
Indie said new ECU...about $2k. Ouch!!
I got into my ECU (what more damage can I do....hehe...indie says it's toast..WTH). Everything looked fine, no shorts, not charred pieces, looked fine.
Traced 12V in and outs (without pinouts it's time consuming). Traced 12 V feed/line that is going to 'shorted' device. What is this?
I put a 100Watt 12 light in series. Lights up real bright (short still there).
But at least now I can talk to ECU and it gives me some codes, which I think are from my leaving some sensors disconnected.
I trace the blue wire and it goes to AC compressor.. (I have a fox/hound toner), I'm going to trace the RED wire next, it would be nice if someone knew what the connector is for.
It sits right on top of the ECU and is well sealed. I'm attaching a picture and the RED line that is going to whatever is shorted.
I think if I find my short, I can try to start the car.
With the line open...engine will NOT turn over.
Any ideas?...anyone.......anyone........Buller?
Cheers
Unable to start or turnover. Electric Radiator fan kicks off like it wants to leave without the car.
Found f57 (25 AMP) popped. Replaced..popped..replaced popped.
Tried my OBD2 reader, nothing..error.
Started digging/researching, finally went to my indie shop, he shared the diagram showing what fed off F57..
Of course my ECU (without power, won't talk to anything) is on it as is the relay that kicks on the fan (by design).
Indie said new ECU...about $2k. Ouch!!
I got into my ECU (what more damage can I do....hehe...indie says it's toast..WTH). Everything looked fine, no shorts, not charred pieces, looked fine.
Traced 12V in and outs (without pinouts it's time consuming). Traced 12 V feed/line that is going to 'shorted' device. What is this?
I put a 100Watt 12 light in series. Lights up real bright (short still there).
But at least now I can talk to ECU and it gives me some codes, which I think are from my leaving some sensors disconnected.
I trace the blue wire and it goes to AC compressor.. (I have a fox/hound toner), I'm going to trace the RED wire next, it would be nice if someone knew what the connector is for.
It sits right on top of the ECU and is well sealed. I'm attaching a picture and the RED line that is going to whatever is shorted.
I think if I find my short, I can try to start the car.
With the line open...engine will NOT turn over.
Any ideas?...anyone.......anyone........Buller?
Cheers
