Anyone local to the Cotswolds with star/xentry? I need my Ecu updated

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Have tried everything with this car that has no start no crank and no commas with ecu. Had electrical guy out who said ecu replace... had ecu cloned.... waste of money ( I checked it myself later and it has 5v ref and check engine displayed) . All electrics on front Sam seem fine except for a 20v fuse for starter (fuse 52) has no power on it, even when key turned to start. The TPS has no comms and also the abs module says it has no comms/doesn’t recognise the ecu. I can get the starter to turn and it sounds heathy if I jump the relay. The fuel pump also doesn’t prime, but if I earth the wire (send what would be the ecu signal) the fuel pump runs! At a complete loss now. I can only think the update might be the issue (as insane as I think this is, Mercedes never fails to surprise me from all the research I have done and the fixes I have seen!
WDB2093082F169157 CLK w209 coupe 220cdi 2005
 
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Forgot to mention... I have checked all earths for ecu and abs module, new battery, new cps sensor (no change) new rear Sam, new fuel pump relay, new starter relay. I have a MB2 icarsoft diagnostic unit with consistent “circuit 61 not ok” message
 

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Did you ever plug it into xentry from the beginning of the first symptoms? Would have saved you lots of time and money
 
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I sent it to a garage that said they did and charged me £250 for it but I don’t think they did as they never gave me the print out I asked for and took cash to release the car when the transporter collected the car... came back worse than it was when it got there (fuse blown - no key remote or radio reception) replaced fuse and got it working again. I think it does need xentry or star but am not sending it to another garage to be conned again to the tune of £300 all in
 
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Is there a way of resetting the ecu eprom without xentry?
 
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Tbh most local garages around here don’t want to touch the thing; as soon as you mention it’s a merc with an electrical issue they lose enthusiasm...
 
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I have about a week before I need a car and the poor old thing will have to go to the scrap man... shame if it is indeed a simple programming issue, it only has 100k on the engine!
 

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Where in the Cotswolds are you?

Have you seen this thread? Not your car but will no doubt be similar.
 
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mersum1es

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Have you checked front sam has no water ingress marks, all relay 100% functioning (I diagnosed one W203 with no start, circuit 61 problem, and it was corroded SAM plus faulty relay on SAM - pulled fine when tested on hand, but on its place nothing. Clear corrosion visible on relay socket. Swapped another similar relay and started ok).
 
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Where in the Cotswolds are you?

Have you seen this thread? Not your car but will no doubt be similar.
I am in Cirencester I will have a look at this thread now, thank you :)
 
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Check relay K in the front SAM. That is what switches the power from the ECU to crank the vehicle.
Thank you, will recheck it but I did have a mobile electrician check the front Sam fuse box (no checking of wiring on the back or pc though) and my main battery which I had recently replaced for a brand new agm as thought the battery it came with may be finished - he seemed to think all was well there and charged me £70 for it!
 
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I am in Cirencester I will have a look at this thread now, thank you :)
Looked at the tread and there are some great tips there thank you. I will check the pins at ecu and will jump the relay to see if the ecu comes alive, that would be very interesting. I did send my ecu off after having an electrician confirm the fuses and relays were all getting power. They sent the ecu back saying it was faulty within the pcb board layer and unrepairable but they had no spare in stock so they sent the ecu back, I sent the ecu off to another chap who cloned it, but when I plugged it in again no change to the problem at all!! My understanding is that even if the ecu is rejected due to incorrect programming the cloned ecu should at least communicate - it didn’t- changed nothing at all. I was charged £250 for the clone and now have x2 ecus... incidentally I have replaced the rear Sam, which I did open up the original and found corrosion on the pcb which I cleaned up and dried out.... plugged it all back in and.... nothing. When I put the second hand one I bought on it did start showing the fuel level on the dash again? I have no idea if the rear Sam needs to be programmed? I have no xentry or star or anything like that to do such a thing and nobody who can come do it for me atm
 

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if something is broken then a diagnostic scan can fail to help, as it may not be able to communicate with the module you need to talk to, (to see what's wrong...)

this isn't the fault of the tech or their equipment and as they tried and spent time, they'll probably want to charge you something. What would be nice is where they are experienced about the issues and get confirmation when it won't talk... once they have fixed it, they don't try and charge a full £250 for a 10 min scan confirming what they already thought was the issue.

clearly if they diagnose (even with a 10 min failed scan) and you don't let them do the work they'll not be amused... this all points to using a decent merc indy to fix it... and not using a main dealer that just follows a set sequence when doing the bill and robs everyone....
 

Steve@Avantgarde

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There are no such thing as auto electricians any more. To be a good competent tech means you need to know as much about electrics as you do about mechanical components including being able to operate a diagnostic machine and a multimeter.

The problem that techs have is each diagnostic kit is different and is never as good as the one designed for the car, eg, STAR. Product knowledge, live data, WIS are all things a MB indy will have at his disposal too.

So far you have thrown bits at it, and in the case of the rear sam, created another job that needs to be sorted. The best thing to do is have it recovered to someone who knows what they are doing and starting again.
 

peterws1957

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^ Exactly this. Absolutely nothing beats getting a car checked by an indie who is an expert on Star. Saves a vast amount of money and endless frustration, and usually ends up with a very quick fix. It is satisfying fixing a problem yourself, but best to know when to throw the towel in.
 

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there's a difference with a main franchised dealer and an sensible indy.

When joe public goes to a Merc dealership, that big garage doesn't know u from adam… and to uphold all things dear in Merc Marketing world... they need to check everything about the car... they aren't allowed to look at the one fault you mention you are unhappy about.... that starts the bill going silly

when the same guy goes to an indie, I guess they indie applies some thought to the car's condition, its age, the owner and how they are talking too them... if you go in with a specific fault and expect only that sorted and clearly have half a clue then it should go faster easier and cheaper

however I think this must be changing as cars are now silly complicated and few have any kit or sense to give a sensible starting point. But I do find most want to think you are stupid, even when you are right and that then causes a different sort of fun...

Goodness knows how a BM or a Merc owners will get anywhere with a garage that doesn't specialise nor has great diagnostic kit... you'd probably get more sense from the lollipop lady
 


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