If you have one of these Mercedes V12 engines, make sure you have the Exact spark plugs that came with the car! Accept no substitute!!! Also if yours is a Turbo do not use Platinum plugs, use only Iridium plugs. Also, old/worn plugs can cause your coilpacks to go bad. Maintenance is important on these cars. If you need to replace a coil pack they are about $1400 each from Mercedes, but there is a guy in California who rebuilds them for about Half the cost. It is crazy to replace a bad coilpack without installing new spark plugs as well.
I know this video is over a year old but just wanted to thank you for your clear and concise description in how to do this job. Do you have a part number for the Mercedes special coil pack puller tool by any chance?
Thank you so much for your vid! It's going to save me $400 at my AMG shop! Too bad you didn't film placing the new coil, but I guess I can manage. Also, should I disconnect the battery before going at it?! Thanks again!
jwade94544 This is a customer’s car. This car has 130k miles on it. I would say that misfires are fairly common among the V12 Mercedes engines in these years the M275 is mostly affected by this problem. It’s just that the coil packs don’t do well when an initial misfire starts. The coil pack itself has to work extremely hard to deliver the high voltage to the plugs and when there is a misfire the coil pack heats up inside causing the circuits to overheat. This in turn will cause other cylinders to fail as well. It is best to deal with misfires immediately on these engines as to lower the risk of damaging the entire pack. 50% if the time you can remedy the problem by replacing the spark plugs and the rubber insulators around the plugs. However if the misfire is allowed to persist without fixing it I guarantee the coil pack will die.
@@HelpingHandAutoRepair I sure did and I subscribed. I have a 2009 s63 that I am repairing myself. Needs headgaskets too, so that is next. I am also debating coilovers with the delete from an after market supplier or just replacing one of the front struts. $2k or $700...the difference is based on piece of mind versus trying to keep the car stock.
Jason Emile Also personally I would switch to coilovers. Airmatic is CRAP! I took them off my personal car (CLS55 AMG) a month after I bought it. Been 7 years now on D2 racing coilovers and I would never go back to air suspension.
I came to this video because I have a dangling pneumatic line near the front of that coil pack. I think I see it in your video too, under where the coil pack was, not connected to anything. I thought maybe I had disconnected it and the other end fell down into the engine bay, but maybe it's all good, maybe it just measures static pressure in the engine bay. Any ideas as to how to figure out how those tiny pneumatic lines are supposed to go?
@@HelpingHandAutoRepair Yes, I figured. If it actually did something, you or someone might know, but it turns out it's probably a test port for the divert air control system. I found forum posts of other people wondering what it is and why it's not connected. Led me to a document called "512 HO M285 Engine (Frech, W) 08-06-03" that is worth a read. It has clear schematics and pictures with a full overview of how the M275/M285 engine operates. Theory on everything: PCV operation, fuel delivery, ignition, EVAP, boost control, and I'm still reading. I already have a good sense of what many of the components in the engine bay are, but by the end of this, I'll be able to identify each sensor and wire in there and know why it's important.
@@charvakkarpe Good Day.I had downloaded a Factory Instruction manual On Coilpack Replacement and There Was a Factory Mercedes Coilpack puller .I was hoping I could find the manual as it was on an old computer that bit the dust.Are You Familiar?Thanks
If you have one of these Mercedes V12 engines, make sure you have the Exact spark plugs that came with the car! Accept no substitute!!! Also if yours is a Turbo do not use Platinum plugs, use only Iridium plugs. Also, old/worn plugs can cause your coilpacks to go bad. Maintenance is important on these cars. If you need to replace a coil pack they are about $1400 each from Mercedes, but there is a guy in California who rebuilds them for about Half the cost. It is crazy to replace a bad coilpack without installing new spark plugs as well.
I know this video is over a year old but just wanted to thank you for your clear and concise description in how to do this job. Do you have a part number for the Mercedes special coil pack puller tool by any chance?
Dude I have those same jordan trainer shoes. One of the best wear around shoe ever. 👍
Hello,for reinstalling the coil pack, should the red insulators be installed on spark plugs first or inserted inside coil pack tubes?Thanks,Rez
Reza Shirali inserted into the coil pack tubes.
Reza Shirali no you cant put in spar plugs then you cant put col pack you cant put it on just put then in coil its beter way
Do you have a video for the passenger side?
I’ll be doing my coil packs soon.
Thanks for this video.
Unfortunately I don’t. I would imagine that the process should be very similar.
Awesome Video Do you Know What The Tool Part # is For The Mercedes Coilpack
puller?Thanks
You would have to stop into the dealership to track that Information down. It used to be available but not sure anymore.
Thank you so much for your vid! It's going to save me $400 at my AMG shop! Too bad you didn't film placing the new coil, but I guess I can manage. Also, should I disconnect the battery before going at it?!
Thanks again!
I would disconnect the battery. Placing the new coil pack is pretty much the reverse of pulling it off.
Sir your video is nice how many miles does this s65 have on it and is it common on the s600?
And also does the s600 s500 and the s65 have cabin filters?
jwade94544 This is a customer’s car. This car has 130k miles on it. I would say that misfires are fairly common among the V12 Mercedes engines in these years the M275 is mostly affected by this problem. It’s just that the coil packs don’t do well when an initial misfire starts. The coil pack itself has to work extremely hard to deliver the high voltage to the plugs and when there is a misfire the coil pack heats up inside causing the circuits to overheat. This in turn will cause other cylinders to fail as well. It is best to deal with misfires immediately on these engines as to lower the risk of damaging the entire pack. 50% if the time you can remedy the problem by replacing the spark plugs and the rubber insulators around the plugs. However if the misfire is allowed to persist without fixing it I guarantee the coil pack will die.
@@HelpingHandAutoRepair don’t forget the voltage transformer
Good Video
Dude! Saved me some money with this. Thank you!
I’m sure you saved quite a bit of money! You’re welcome
@@HelpingHandAutoRepair I sure did and I subscribed. I have a 2009 s63 that I am repairing myself. Needs headgaskets too, so that is next. I am also debating coilovers with the delete from an after market supplier or just replacing one of the front struts. $2k or $700...the difference is based on piece of mind versus trying to keep the car stock.
Jason Emile head gaskets as in the car is overheating? Or valve cover gaskets as in the car is leaking oil?
Jason Emile Also personally I would switch to coilovers. Airmatic is CRAP! I took them off my personal car (CLS55 AMG) a month after I bought it. Been 7 years now on D2 racing coilovers and I would never go back to air suspension.
@@HelpingHandAutoRepair valve cover gaskets as the car is leaking oil
Godd video!!!
Nm torque of stark plugs?please 😅👏👏👏
luky luky81 24-28Nm
I came to this video because I have a dangling pneumatic line near the front of that coil pack. I think I see it in your video too, under where the coil pack was, not connected to anything. I thought maybe I had disconnected it and the other end fell down into the engine bay, but maybe it's all good, maybe it just measures static pressure in the engine bay. Any ideas as to how to figure out how those tiny pneumatic lines are supposed to go?
Hard to tell in my video what line you are talking about. This is a customer’s car so I cannot go and look at it whenever.
@@HelpingHandAutoRepair Yes, I figured. If it actually did something, you or someone might know, but it turns out it's probably a test port for the divert air control system. I found forum posts of other people wondering what it is and why it's not connected. Led me to a document called "512 HO M285 Engine (Frech, W) 08-06-03" that is worth a read. It has clear schematics and pictures with a full overview of how the M275/M285 engine operates. Theory on everything: PCV operation, fuel delivery, ignition, EVAP, boost control, and I'm still reading. I already have a good sense of what many of the components in the engine bay are, but by the end of this, I'll be able to identify each sensor and wire in there and know why it's important.
@@charvakkarpe Good Day.I had downloaded a Factory Instruction manual On Coilpack Replacement and There Was a Factory Mercedes Coilpack puller .I was hoping I could find the manual as it was on an old computer that bit the dust.Are You Familiar?Thanks
Is the s65 amg cost more to maintain than the s55 amg?
Yes.