W221 S350 not starting (doesn’t even try) after service.

[DSK]

What’s is a wss?

Edited - if you mean wheel speed sensor, then never to my knowledge.

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[Botus]

starter motors seem to have penchant for giving up - hear lots of stories on another forum where they seem to fit them for fun... I think submariner has had this sort of issue on his CL

 

[DSK]

MB centre can’t come out this week as the owner is out for rest of the week. He told me to keep trying and it just may start. I said now I think whatever is wrong is permanently wrong. They said it could be an ignition relay.

Provisionally booked in for next Tuesday assuming it does start before then, I’ll just drive it there. I will call them later this week to update if it starts or not.


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[ajlsl600]

As per the post, tried both keys and exactly the same. When MB centre came out and changed the battery I also had the batteries in both keys replaced.

I tried Googling for some insight but, this seems to be common with many Mercedes with all sorts of variables such as the following just to mention a few;
Gear selector
Eis
Sam
ECU
Etc

Seen several bits and pieces online where people (albeit USA based) were told the diagnostics pointed to the likes of a sam/ecu etc and after changing those, it did not resolve the issue.

I’m going to try starting again later this morning and if doesn’t start then I’ll try charging the battery and try again as feel I have nothing to loose but, the car has been epic since I bought it 2 years ago.

Rather than spend thousands and have someone throw parts at it, (which is what I fear will happen now with MB centre) and not fix it, I’d rather pay someone like @AlexForti to come up for a day and take it from there.

(I am quite ****ed off as this car is only on 60k legit, and in the 10k I have done over the last 2 years, with both services done to my standards which are recorded as a sevice a and then some!, unmarked condition, solely run on vpower diesel etc, this car is epic and laughs in the face of what what 99% of folks call ‘mint/maintain regardless of cost’). I bought it to keep and maintain it to dsk standards but, really can’t be dealing with this crap and risk being stranded, helpless with a very young child).

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Shame, nice carbut makers now sell a cockpit and expectation. There is so much electrical crxp in modern cars, benz that QC and reliability post warranty just is not what one expected or was used to its l gone downhill since 2001 as far as I am concerned. I do hope you get sorted but as you say one or two reliability issues kills one's confidence in most things. I just glad benz had f a to do with apollo electrics.!!!

 

[DSK]

Well I’m going to see if can reach out to any other MB specialists and whilst far from ideal I’d be happy to pay for fresh xentry/star diagnostics on drive in the mean time. As the fresh set of codes could help
(Assuming it’s logged).


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[Wighty]

Well I’m going to see if can reach out to any other MB specialists and whilst far from ideal I’d be happy to pay for fresh xentry/star diagnostics on drive in the mean time. As the fresh set of codes could help
(Assuming it’s logged).


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Could you call out RAC/Mobilio somehow ….they have Star

 

[tode]

Are you covered by Mobilo ?

 

[DSK]

No I do not have mobilio (don’t even know what that is other than some mb stealer recovery thing).

I didn’t realise RAC would have star. I have full personal cover with them though. So will see if they can at least come out and pull of the codes. I am going to try and buy a couple of relays in the meantime just for the sake of testing. (Obviously won’t try them until it’s a dry day)

Happy to pay someone big monies who has the kit and skills to fix it though appreciating its beached on the drive which is not ideal compared to a workshop. If I keep it after this, all service work is going to @alexforti / @star despite distance.


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[tode]

^^^ If the car's been serviced by MB, your Mobilo should still be valid.
They will get it to an MB garage free.

 

[DSK]

MB centre is a large independent Merc specialist in a Nottingham, all ex BK Thomas employees. So not a Mercedes dealership.


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[DSK]

I found a company that can transport my car on a low entry flat bed and they also have wheel skates.

So plan is ;

1. Transport the car to MB centre on Monday.
2 . Tuesday it’s booked in.

This will be my last job with MB centre, despite their high google reviews they are only average (at best). I don’t trust them not fvck something else up now.

 

[DSK]

The recovery chap came and the car repeatedly failed to crank/start.

After some time was spent head scratching and the chap calling for backup, he tried it again and suddenly, as if nothing ever happened the car started. As a result, I drove it to MB Centre with the recovery following as that was the best and easiest option.

Now for others who may have a beached car on the drive, the recovery chap said it’s all very well garages stating just have the car recovered but, it’s not always that simple! The office didn’t relay all the details to him, so he was calling for backup which obviously means more time and complications for all involved. He said the car will still need to be turned so, if you’re suspension has dropped (mine didn’t) that’s another issue.


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[DSK]

So Mb have had it 2 days. It’s still with them. At a high level….

The car failed to start on Monday evening for them but, fired up like nothing ever happened the next morning.

They ran diagnostics which showed comms errors between modules. Apparently a lot of testing on systems and obvious components has been done. Some test relays fitted and every time they have tried it, it’s fired. I’ve told them to keep it for longer, and keep checking testing. If it’s just relays then fit me brand new ones in for sake of it. I may pick up Friday/Monday after which, I’ll be able to share more.


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[DSK]

They have run the car all week without a single issue on the test and then the new relay along with a software update (they said it’s not the emissions one).

Going to pick the car up tomorrow.


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[ajlsl600]

Hope software update does not screw other stuff up. Rtn in month with "update"... Hah!!

 

[DSK]

Hope software update does not screw other stuff up. Rtn in month with "update"... Hah!!

I did question it and they assured me it’s not the nox/emissions stuff as they can’t do that but, something else ecu related iirc. It will be on the invoice.

Either way I said so long as it doesn’t cause me emissions system or other issues then do it otherwise not. If something happens as a result of it then i will kick off and insist the software is rolled back.


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[ajlsl600]

I did question it and they assured me it’s not the nox/emissions stuff as they can’t do that but, something else ecu related iirc. It will be on the invoice.

Either way I said so long as it doesn’t cause me emissions system or other issues then do it otherwise not. If something happens as a result of it then i will kick off and insist the software is rolled back.


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Grand plenty never have issue, but some do. I simply won't allow an update until, unless car becomes a brick. Then I hav little to loose, I just don't trust em,! Maker or dealer, indie maybe.

 

[DSK]

Grand plenty never have issue, but some do. I simply won't allow an update until, unless car becomes a brick. Then I hav little to loose, I just don't trust em,! Maker or dealer, indie maybe.

I agree and I have always declined software updates at service times but, now I just need the w221 working.

I’ll upload the info for others benefit at the weekend as this no crank/start seems to be an MB feature.

 

[Botus]

that should be interesting

just had a rummage - didn't find much on the engine re updates....

lots of fun (incredibly for so late in the 7G life) on the gearbox with over 7 fixes much of which were line pressure / set up issues and software tweaks for facelift 221

then found 2 on adblue diagnosis from 2015... will post on one of the it went wrong threads

 

[DSK]

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