Best Deal on V12 TT Coil Packs???
Senior Member
Joined: Apr 2014
Posts: 290
Likes: 3
SL65
i dont seem to understand this thread , people are blowing IGN modules/ Voltage transformers but are replacing them with the same part numbers, wouldn't it just blow again if you did not replace it with the updated part number? also what is the updated part number for this ? I have a 2004 SL65 and recently uploaded a tune to my car, I think it blew my module, if I put the same module back into my car wouldn't it just blow it again? or do I need a module that is updated to handle the new tune ?
Super Member
Joined: Jul 2009
Posts: 603
Likes: 2
From: Asheville, Atlanta
SL 65 AMG, Porsche 911 (993), 2014 Cayenne GTS, 2013 Toyota Highlander Limited
In 7 years I have had 2 coils blow (left one and right one) 20 K miles apart ( car has 60K on it now) and the ignition module went after one of the coils or vice versa.... with all the information on these threads about this it seems that coils were upgraded back in 2007 and transformer or ignition module ( $ 900.00 - $ 1K) is the same part which doesn't go as often but seems that its failure can effect a coil to also go when it goes.....if this make sense......
Senior Member
Joined: Apr 2014
Posts: 290
Likes: 3
SL65
In 7 years I have had 2 coils blow (left one and right one) 20 K miles apart ( car has 60K on it now) and the ignition module went after one of the coils or vice versa.... with all the information on these threads about this it seems that coils were upgraded back in 2007 and transformer or ignition module ( $ 900.00 - $ 1K) is the same part which doesn't go as often but seems that its failure can effect a coil to also go when it goes.....if this make sense......
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
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From: Welwyn, Herts, UK
2006 S600
Its difficult to diagnose an ignition module fault, as they have the same symptoms as coil pack faults. The common answer seems to be trial and error. If you have misfires on cylinders 1-6, or 7-12, then its PROBABLY a RHS or LHS coil pack fault respectively. If its randomly all cylinders, its PROBABLY the ignition module - as long as you've eliminated other systematic defects like lambda, pressure and temperature sensors etc. Its not a hard and fast rule though, and there are plenty of exceptions.
Super Member
Joined: Jul 2009
Posts: 603
Likes: 2
From: Asheville, Atlanta
SL 65 AMG, Porsche 911 (993), 2014 Cayenne GTS, 2013 Toyota Highlander Limited
Reply
when they first diagnosed iit they missed the ignition module being bad....they replaced plugs, coil and misfire problem came back within a week....replaced ignition module and all okay...then the other coil went after 20k replaced it and all okay....that was the sequence...40 k to 55 k miles...
Senior Member
Joined: Apr 2014
Posts: 290
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SL65
when they first diagnosed iit they missed the ignition module being bad....they replaced plugs, coil and misfire problem came back within a week....replaced ignition module and all okay...then the other coil went after 20k replaced it and all okay....that was the sequence...40 k to 55 k miles...
Senior Member
Joined: Apr 2014
Posts: 290
Likes: 3
SL65
Its difficult to diagnose an ignition module fault, as they have the same symptoms as coil pack faults. The common answer seems to be trial and error. If you have misfires on cylinders 1-6, or 7-12, then its PROBABLY a RHS or LHS coil pack fault respectively. If its randomly all cylinders, its PROBABLY the ignition module - as long as you've eliminated other systematic defects like lambda, pressure and temperature sensors etc. Its not a hard and fast rule though, and there are plenty of exceptions.
Thanks guys for helping with the input and feedback much appreciated, this forum is so valuable in terms of knowledge about these cars
Super Member
Joined: Jul 2009
Posts: 603
Likes: 2
From: Asheville, Atlanta
SL 65 AMG, Porsche 911 (993), 2014 Cayenne GTS, 2013 Toyota Highlander Limited
Reply
I went to Indy first then to dealer....I actually found a dealer in Asheville NC that does great work....I actually can notice my car running smoother after they get done with it....there still is trial and error with electrical stuff unfortunately....car is sorted out now with 2 new updated coils, new plugs, new transformer, etc...can't wait for my next rotor replacements.....
)
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MBWorld Fanatic!
Joined: Nov 2010
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From: Welwyn, Herts, UK
2006 S600
Yes, just fit new sensors. They're cheap, and if you didn't to need to fit new ones today, you'd need them next year anyway. They get baked in the heat and fracture easily.
Senior Member
Joined: Apr 2014
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SL65
which sensors are we referring to? I know each 02 sensor is about $250 is it even worth throwing out $500 plus, or are we talking about different sensors ?
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
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From: Welwyn, Herts, UK
2006 S600
No need to go to Mercedes for sensors. They're all the same, and you can get cheap ones for a small fraction of that. They'll be fine. Just make sure to get four wire rather than three wire.
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,077
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From: Anchorage
05 CL65
We need to give welwynnik his own forum called "Just ask W". Lol. You sir (I shall call you W from now on) are full of awesome support for the members of this website. Thank you.
O2 sensors, like you said,area common maintenance item on all OBD2 cars, but clearly a lot of people miss out on this by not keeping their stuff long enough to learn this. I personally appreciate all the wisdom you share here.
O2 sensors, like you said,area common maintenance item on all OBD2 cars, but clearly a lot of people miss out on this by not keeping their stuff long enough to learn this. I personally appreciate all the wisdom you share here.
Last edited by Dr Matt; Feb 15, 2016 at 06:09 PM.
are they actually an item that does go at a certain milage?
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
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From: Welwyn, Herts, UK
2006 S600
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
Likes: 343
From: Welwyn, Herts, UK
2006 S600
Try searching Google, Amazon and ebay for:
Bosch 0258006473
http://www.bosch-automotive-catalog....3FautoLoad%3D1
Delphi ES20312-12B1
http://www.delphicat.com/WebForms/fr...#1455631850986
Denso DAX-2007
http://www.denso-am.eu/e-catalogue/
Lambda sensors are quite durable, and usually last a high mileage. When they fail, they degrade gradually and react slowly to the rapidly varying air-fuel ratio.
Pressure sensors are more vulnerable to heat and damage. The sensors used on the V12TT are boost sensors rather than MAP sensors, but they're still common as muck, shared with most modern Mercedes.
Nick
Last edited by Welwynnick; Feb 16, 2016 at 09:26 AM.
Senior Member
Joined: Apr 2014
Posts: 290
Likes: 3
SL65
Best way to find those sorts of parts is to look at the manufacturers on-line catalogues, enter your vehicle details, then search for their part numbers.
Try searching Google, Amazon and ebay for:
Bosch 0258006473
http://www.bosch-automotive-catalog....3FautoLoad%3D1
Delphi ES20312-12B1
http://www.delphicat.com/WebForms/fr...#1455631850986
Denso DAX-2007
http://www.denso-am.eu/e-catalogue/
Lambda sensors are quite durable, and usually last a high mileage. When they fail, they degrade gradually and react slowly to the rapidly varying air-fuel ratio.
Pressure sensors are more vulnerable to heat and damage. The sensors used on the V12TT are boost sensors rather than MAP sensors, but they're still common as muck, shared with most modern Mercedes.
Nick
Try searching Google, Amazon and ebay for:
Bosch 0258006473
http://www.bosch-automotive-catalog....3FautoLoad%3D1
Delphi ES20312-12B1
http://www.delphicat.com/WebForms/fr...#1455631850986
Denso DAX-2007
http://www.denso-am.eu/e-catalogue/
Lambda sensors are quite durable, and usually last a high mileage. When they fail, they degrade gradually and react slowly to the rapidly varying air-fuel ratio.
Pressure sensors are more vulnerable to heat and damage. The sensors used on the V12TT are boost sensors rather than MAP sensors, but they're still common as muck, shared with most modern Mercedes.
Nick
which specific sensors should I replace, my car is still of the road its been 3 months and still no resolution , coil pack replaced but still failing, next thing to do is IGN Module / Transformer , then sensors or ECU. Not sure which sensors to replace "Nick", and where are they located, as well as any part numbers ??
Junior Member
Joined: Jan 2008
Posts: 34
Likes: 0
'05 S600
Monsta, do the ignition transformer. I have been following your posts and have the exact same issues as you, including EC tune. it was the transformer, takes 10 minutes and costs 700-900 US depending where you get it. I also mistakenly changed a coil pack with same results
Senior Member
Joined: Apr 2014
Posts: 290
Likes: 3
SL65
Monsta, do the ignition transformer. I have been following your posts and have the exact same issues as you, including EC tune. it was the transformer, takes 10 minutes and costs 700-900 US depending where you get it. I also mistakenly changed a coil pack with same results
thanks boost pressure control valve
map sensor, voltage regulator
techron injector cleaner , 02 sensors,
injector overhaul, crank position sensor, , carbon build up,air pressure sensors (one on both air boxes and one above the manifold by the intercooler). Also the downstream air intake sensor in the manifold!
* Camshaft position sensor.
* Crankshaft position sensor.
* Change-over valve.
* Intake manifold.
* Left charged air cooler.
* Temperature sensor, charged air line.
Senior Member
Joined: Apr 2014
Posts: 290
Likes: 3
SL65
An option to buying a new transformer is to have it rebuilt for $295: Mercedes Benz Genuine M Ignition Voltage Transformer Repair Only | eBay
http://www.programainc.com/
http://www.programainc.com/
