Want to help with an experiment ?? Easy Test ;) - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 05-27-2019
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Want to help with an experiment ?? Easy Test ;)

Hi guys,

My 2002 (facelift) V6 Car is definitely ME2.8 ECU.

Can some of you with Facelift and Pre Facelift Cars try the following cranking test, and also any of you knowledgeable guys tell me what ME (2.0 or 2.8) is fitted in what model / year R170's please.

My ME2.8 R170 (just like my W220 S Class with ME2.8) when you turn the key to crank it and release the key back to the IGN position, it will continue to crank until it starts or about 20 seconds if it doesn't start

I think Pre Facelift Cars are all ME 2.0 and Post Facelift V6 Cars are all ME2.8 , but what about Post Facelift 4 Cylinder Cars, which ME are they ???????????????????

Here's the test ...................

I tested my V6 R170 this morning, I turned the key then released key after about a second, and she continues to crank for a further half to one second then fired up !!

So if your Car does this or not is what I need to know, as well as model year and engine size (200 / 230 / 320), so we can see if an ME2.0 Car does it too, or if it is just ME2.8 Cars

I suspect that it is only ME2.8 that do this, but knowing for sure will add more knowledge to the Engine Immobiliser arsenal

WIS / EPC is, as expected, not helping me much here

TIA, Cheers Dave
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#2 Old 05-27-2019
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I'd never noticed that before.

Both mine are 2001 post-FL, just been out to try them:

The 6 pot 320 AUTO .. yes continues to crank until it fires up, only a second or two but I have new plugs and a new battery that's trying to throw the engine out of it's bay

The 4 pot 200 MANUAL .. No it doesn't continue to crank, ceases as soon as I release the key

HTH
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Last edited by M4rCu5; 05-27-2019 at 08:17 AM.
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#3 Old 05-27-2019
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Mine's a facelift and mine does that - 2001 320. I think I have read somewhere it's only the automatics that do that - manuals don't. I don't remember mine lasting as long as 20 seconds if it fails to start (when my crank sensor was faulty).
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#4 Old 05-27-2019
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Hi Dave, my facelift 2003 SLK230 automatic does not do this. Crank stops as soon as you release the key.
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#5 Old 05-27-2019
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My 320 does that. Let's me get on with putting on the seat belt and starting putting the roof down.

Sent from my phone while my back was turned.
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#6 Old 05-27-2019
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Originally Posted by savcom View Post
My 320 does that. Let's me get on with putting on the seat belt and starting putting the roof down.

Sent from my phone while my back was turned.


.. and you have a Manual?
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#7 Old 05-27-2019
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Thanks so much Guys, this is all very helpful.

A few more will confirm my theories which I'll discuss a little later.

So that 20 seconds, that's just me guessing, I've never timed it, but there is definitely a period of so many seconds, then you have to try again if no start.

When I first bought my W220 as non runner, she would do the cranking for a period of time then stop, then you would switch off, turn key and repeat.

I thought that the Manual Cars with ME 2.8 did this too, hopefully there will be someone along with a Manual V6 to confirm or refute this

OK, so atm, (but will edit this if someone can refute it), it looks to me that :-

1) 4 Cylinder Cars, including the Facelift one above is ME 2.0 ???

2) M112 V6 Cars are all ME 2.8 ???

Cheers for now, Dave
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#8 Old 05-27-2019
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Quote:
Originally Posted by savcom View Post
My 320 does that. Let's me get on with putting on the seat belt and starting putting the roof down.

Sent from my phone while my back was turned.
Hi,

Thanks, could you confirm is your V6 a Manual Trans or Auto please ???

Cheers Dave
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#9 Old 05-27-2019
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Quote:
Originally Posted by M4rCu5 View Post




.. and you have a Manual?
Sorry. I have an auto. Still cranks though. :Wink:

Sent from my phone while my back was turned.
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#10 Old 05-27-2019
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Hi,

Aha ok, thanks for prompt reply, so we just need a V6 Manual owner now

Cheers Dave
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#11 Old 05-27-2019
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Originally Posted by Dave2302 View Post
Thanks so much Guys, this is all very helpful.

A few more will confirm my theories which I'll discuss a little later.

Cheers for now, Dave
I look forward to it because I don't know where you're going with this at all
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#12 Old 05-27-2019
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Hi,

LOL, just love that emoji

I'm currently waiting on parts for most of this weeks workload, bored and doing some more research for these Engine swaps.

OK, so I've already got one spare V8 M113 ECU, and just bought another on EBay ...................

When the EBay one gets here I'll virginise them both.

Plug one into my V6 Car and then I use SDS not only to synch it to the V6 Immo, but also try and re code it as V6 ...................... Then I should have 2 ECU's that run my Car, it's original V6 one, and a V8 one that I have "lied to", which may or may not throw a fault code for 7 & 8 Misfire, 7 & 8 Injector Circuit, and 7 & 8 Ignition Coil Circuit.

That being the case I will know with 100000000000% cast iron certainty that once I have spent all the time and dosh stuffing an M113 V8 in it, I just fit the other V8 Virgin ECU and this time I only synch it to the Cars DAS 2 Immo, but leave the Engine Coding alone, and bam it starts and runs the V8 properly

I am not certain if once the Immo is locked so is the Codings for Engine, or if you can change them irrespective of "Immo marriage", and I don't really want to try it on either of my existing ECU's that my W220 and R170 are running on atm, as I don't want to end up with an Immobilised / bad running Car right now

So I'm exploring expanding and confirming my DAS 2 / DAS 3 / ME 2.0 / ME 2.8 knowledge right now

Cheers Dave
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#13 Old 05-27-2019
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Not sure if any help but the '01 V6 SLK and my V6 /auto Caddy does but the early '00 230/manual and '07 Crossfire V6/manual (R170 clone) do not. My '12 Jeep you just push the button once (V6/same auto trans as Mercedes)

Think it may be a German thing. Any makes from other countries startwith one tap ?
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#14 Old 05-27-2019
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Well, you already know this, but still, my FL 230 manual also stops cranking the moment you let go of the key.
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#15 Old 05-27-2019
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Hi,

Thank you. The 2007 V6 Manual Crossfire bit is interesting, I wonder if anyone knows what ECU it is running ??

The way I understand it is all Mercedes cars with ME 2.8 do it, ones with ME 2.0 do not, which is why all we need is a manual V6 owner to confirm and I'll be absolutely certain then.

What we have learned here today is further re inforcement of my belief.
Problem is the nasty man at Mercedes will not give me the strategy documents for ME 2.8 DAS 2 and DAS 3 so I can compare them ................ What a party pooper

You see I know exactly what DAS 3 does, and exactly what DAS 2 does but what I don't know is exactly which lines of code control which aspect of the Immo, and which ones control the "Engine" size / config.
If you have ever seen a .bin dump from a Motor ECU you will know that it is a humongous file, and I'm not exactly an experienced programmer who does this on an every day basis !!

That said I successfully hacked 150 PID's in a FORD EECV ECU some years ago so I could not only sort the Immo issue, but also re map it, where no one else could, because they didn't have the definition file to ID the PID's.

The humble Mercedes Benz Bosch effort is one helluva lot more hack friendly as they don't change the Def's as often as Fords changed their underpants, hence there is so many guys out there who can re map most Bosch via K line, but only a handfull of FORD EEC's

I need to be really certain before I start looking for the patterns in the binary in order to Virginise just the Locked Immo Data, all the ones I have done so far have been like for like replacement ECU's and "Virginise / Re-Marry" procedure works a treat, but never done it by using a V8 ECU on a V6 Car yet

Like I have said in the past I am 99.9999999999999999999% certain it will be a no different process, but I'd just like to be absolutely belt braces and cable ties safe before going at it

I don't mind bricking a few Ł30.00 EBay ECU's in order to further the cause, but I seriously do not want to mess with the 2 that my R170 and W220 Cars are both running fine on right now

Cheers Dave
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#16 Old 05-27-2019
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OK final update of the day, just back from talking with a mate who has done this, and does this for a living half way around the world............................

I have also chatted with several EEPROMMERS in UK today, and they didn't have a scooby do, obvious to me I was confuddling them

So here's what the guy who I trust says, and when all the parts and a new bit of kit are here I will do this with my R170 ...............

You're pretty much on the money Davie.

Just flash the eeprom only and you'll be set.

I think that you'll even be able to start the car with the V8 ECU if you wanted to make sure it's working... Never tried it though, but I do know that a 272 ECU works in a 273.

Or plug in the V8 ECU to the V6 Car and check on SDS the DAS 2, (immo), and see if start enabled is ticked. If it is, it's all good.


That'll be belt, braces, string, cable ties and glue all holding my trousers up then
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