2012 Mercedes C350 4 matic coupe
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2010 C350 4M
2012 Mercedes C350 4 matic coupe
Wow I look at this 2012 C350 4M looks like changing the spark plugs specially on the driver side is pretty hard.
Anyone have a video or how too. Can't find on yourtube. 2010 is easy but not this 2012
Anyone have a video or how too. Can't find on yourtube. 2010 is easy but not this 2012
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From: Newcastle Upon Tyne
W204 C220CDI 2011
It would be a big help if you would post your vin, or at least the engine model number.
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I was thinking the same. When did Mercedes start using the M276 engine? Spark plug change on that engine is quite involved. The plugs have to go in at a precise torque to ensure proper clocking (orientation) to the fuel injectors. Then, you have the whole intake thing to deal with.
Last edited by JettaRed; Apr 13, 2022 at 06:53 AM.
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2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
Haven't seen the process for the M276 but on the M272 it's arguably the easiest spark plug change I've ever done (did them recently).
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W212 E350
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Here’s a video of doing it from another MB site.
https://www.benzworld.org/threads/vi...-m276.3044229/
Some say the manifold does not need to be removed. This is on an E-Class so not certain if it applies directly to C-Class cars. There was a step by step in the SLK forum, but the pics seem to be no longer available.
One note: removal and installation of the plugs on M276 requires a special 12 point thin wall socket like Assenmacher SP1412.
https://www.benzworld.org/threads/vi...-m276.3044229/
Some say the manifold does not need to be removed. This is on an E-Class so not certain if it applies directly to C-Class cars. There was a step by step in the SLK forum, but the pics seem to be no longer available.
One note: removal and installation of the plugs on M276 requires a special 12 point thin wall socket like Assenmacher SP1412.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
2010 C350 4m with M272.961 uses 16mm plug socket
2012 C350 4m with M276.957 uses 14mm 12 point plug socket
Canada cars are sometimes different from US. Please post your VIN or check lastvin.com for engine type.
2012 C350 4m with M276.957 uses 14mm 12 point plug socket
Canada cars are sometimes different from US. Please post your VIN or check lastvin.com for engine type.
Last edited by Odd Piggy; Apr 13, 2022 at 06:04 AM. Reason: Added info
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
https://www.fcpeuro.com/products/mer...sch-0041598103
Last edited by JettaRed; Apr 13, 2022 at 06:58 AM.
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
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Here’s a video of doing it from another MB site.
https://www.benzworld.org/threads/vi...-m276.3044229/
Some say the manifold does not need to be removed. This is on an E-Class so not certain if it applies directly to C-Class cars. There was a step by step in the SLK forum, but the pics seem to be no longer available.
One note: removal and installation of the plugs on M276 requires a special 12 point thin wall socket like Assenmacher SP1412.
https://www.benzworld.org/threads/vi...-m276.3044229/
Some say the manifold does not need to be removed. This is on an E-Class so not certain if it applies directly to C-Class cars. There was a step by step in the SLK forum, but the pics seem to be no longer available.
One note: removal and installation of the plugs on M276 requires a special 12 point thin wall socket like Assenmacher SP1412.
Here's the parts you need for the M276 engine.
https://www.fcpeuro.com/products/mer...sch-0041598103
https://www.fcpeuro.com/products/mer...sch-0041598103
Guess we'll see how it goes in a month and a halfs time. Might document it, we'll see. I'd already ordered the FCP Euro kit without the 12pt socket as I'm pretty sure I have one (I was planning on doing it over spring break but plans changed). If I can change the plugs without pulling the intake manifold and replacing the plenum gaskets then that would certainly save me some time. Especially because I'm doing the 722.9 transmission fluid change aswell
Joined: Nov 2016
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
The socket that comes with the kit it thin-walled to fit in the spark plug well. You may wish you had it when the time comes.
I've done this job and it really is involved. If you don't have time to do it right, what makes you think you have time to do it over? Don't take short cuts on this one. And get a good torque wrench. You want to torque to exactly 23 Nm as prescribed. A digital torque wrench may be your best option.
The first time around, this is costing more than you probably planned for. But having the right tools and following the procedures makes the job easier in the end. And the good thing about FCP is that you we never need to buy the kit again. (Actually, you do buy it a second time, but you send the old parts back and they refund the price of the new kit.)
I've done this job and it really is involved. If you don't have time to do it right, what makes you think you have time to do it over? Don't take short cuts on this one. And get a good torque wrench. You want to torque to exactly 23 Nm as prescribed. A digital torque wrench may be your best option.
The first time around, this is costing more than you probably planned for. But having the right tools and following the procedures makes the job easier in the end. And the good thing about FCP is that you we never need to buy the kit again. (Actually, you do buy it a second time, but you send the old parts back and they refund the price of the new kit.)
Senior Member
Joined: May 2021
Posts: 319
Likes: 138
From: Miami
W212 E350
The socket that comes with the kit it thin-walled to fit in the spark plug well. You may wish you had it when the time comes.
I've done this job and it really is involved. If you don't have time to do it right, what makes you think you have time to do it over? Don't take short cuts on this one. And get a good torque wrench. You want to torque to exactly 23 Nm as prescribed. A digital torque wrench may be your best option.
The first time around, this is costing more than you probably planned for. But having the right tools and following the procedures makes the job easier in the end. And the good thing about FCP is that you we never need to buy the kit again. (Actually, you do buy it a second time, but you send the old parts back and they refund the price of the new kit.)
I've done this job and it really is involved. If you don't have time to do it right, what makes you think you have time to do it over? Don't take short cuts on this one. And get a good torque wrench. You want to torque to exactly 23 Nm as prescribed. A digital torque wrench may be your best option.
The first time around, this is costing more than you probably planned for. But having the right tools and following the procedures makes the job easier in the end. And the good thing about FCP is that you we never need to buy the kit again. (Actually, you do buy it a second time, but you send the old parts back and they refund the price of the new kit.)
Joined: Nov 2016
Posts: 7,847
Likes: 3,496
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I think you're better prepared than most. Piece of cake!
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2010 C350 4M
I own 2 C350 here. 2010 and 2012. I have time to doing it. I just to mske sure what to do before I start. I finially see an youtube by FCP very detail.
I have torue wrench here and I just need to get the spark plug socket. I am sure the 14mm is for 2012 and 16mm for 2010 C350.
Thanks !
I have torue wrench here and I just need to get the spark plug socket. I am sure the 14mm is for 2012 and 16mm for 2010 C350.
Thanks !
